generates pod documentation for Config.pm from this file--please try to keep
the formatting regular.]
+_a (Unix.U):
+ This variable defines the extension used for ordinary libraries.
+ For unix, it is '.a'. The '.' is included. Other possible
+ values include '.lib'.
+
+_exe (Unix.U):
+ This variable defines the extension used for executable files.
+ For unix it is empty. Other possible values include '.exe'.
+
+_o (Unix.U):
+ This variable defines the extension used for object files.
+ For unix, it is '.o'. The '.' is included. Other possible
+ values include '.obj'.
+
+afs (afs.U):
+ This variable is set to 'true' if AFS (Andrew File System) is used
+ on the system, 'false' otherwise. It is possible to override this
+ with a hint value or command line option, but you'd better know
+ what you are doing.
+
+alignbytes (alignbytes.U):
+ This variable holds the number of bytes required to align a
+ double-- or a long double when applicable. Usual values are
+ 2, 4 and 8. The default is eight, for safety.
+
+ansi2knr (ansi2knr.U):
+ This variable is set if the user needs to run ansi2knr.
+ Currently, this is not supported, so we just abort.
+
+aphostname (d_gethname.U):
+ This variable contains the command which can be used to compute the
+ host name. The command is fully qualified by its absolute path, to make
+ it safe when used by a process with super-user privileges.
+
+api_revision (patchlevel.U):
+ The three variables, api_revision, api_version, and
+ api_subversion, specify the version of the oldest perl binary
+ compatible with the present perl. In a full version string
+ such as '5.6.1', api_revision is the '5'.
+ Prior to 5.5.640, the format was a floating point number,
+ like 5.00563.
+ perl.c:incpush() and lib/lib.pm will automatically search in
+ $sitelib/.. for older directories back to the limit specified
+ by these api_ variables. This is only useful if you have a
+ perl library directory tree structured like the default one.
+ See INSTALL for how this works. The versioned site_perl
+ directory was introduced in 5.005, so that is the lowest
+ possible value. The version list appropriate for the current
+ system is determined in inc_version_list.U.
+ XXX To do: Since compatibility can depend on compile time
+ options (such as bincompat, longlong, etc.) it should
+ (perhaps) be set by Configure, but currently it isn't.
+ Currently, we read a hard-wired value from patchlevel.h.
+ Perhaps what we ought to do is take the hard-wired value from
+ patchlevel.h but then modify it if the current Configure
+ options warrant. patchlevel.h then would use an #ifdef guard.
+
+api_subversion (patchlevel.U):
+ The three variables, api_revision, api_version, and
+ api_subversion, specify the version of the oldest perl binary
+ compatible with the present perl. In a full version string
+ such as '5.6.1', api_subversion is the '1'. See api_revision for
+ full details.
+
+api_version (patchlevel.U):
+ The three variables, api_revision, api_version, and
+ api_subversion, specify the version of the oldest perl binary
+ compatible with the present perl. In a full version string
+ such as '5.6.1', api_version is the '6'. See api_revision for
+ full details. As a special case, 5.5.0 is rendered in the
+ old-style as 5.005. (In the 5.005_0x maintenance series,
+ this was the only versioned directory in $sitelib.)
+
+api_versionstring (patchlevel.U):
+ This variable combines api_revision, api_version, and
+ api_subversion in a format such as 5.6.1 (or 5_6_1) suitable
+ for use as a directory name. This is filesystem dependent.
+
+ar (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the ar program. After Configure runs,
+ the value is reset to a plain "ar" and is not useful.
+
+archlib (archlib.U):
+ This variable holds the name of the directory in which the user wants
+ to put architecture-dependent public library files for $package.
+ It is most often a local directory such as /usr/local/lib.
+ Programs using this variable must be prepared to deal
+ with filename expansion.
+
+archlibexp (archlib.U):
+ This variable is the same as the archlib variable, but is
+ filename expanded at configuration time, for convenient use.
+
+archname64 (use64bits.U):
+ This variable is used for the 64-bitness part of $archname.
+
+archname (archname.U):
+ This variable is a short name to characterize the current
+ architecture. It is used mainly to construct the default archlib.
+
+archobjs (Unix.U):
+ This variable defines any additional objects that must be linked
+ in with the program on this architecture. On unix, it is usually
+ empty. It is typically used to include emulations of unix calls
+ or other facilities. For perl on OS/2, for example, this would
+ include os2/os2.obj.
+
+awk (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the awk program. After Configure runs,
+ the value is reset to a plain "awk" and is not useful.
+
+baserev (baserev.U):
+ The base revision level of this package, from the .package file.
+
+bash (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+bin (bin.U):
+ This variable holds the name of the directory in which the user wants
+ to put publicly executable images for the package in question. It
+ is most often a local directory such as /usr/local/bin. Programs using
+ this variable must be prepared to deal with ~name substitution.
+
+bincompat5005 (bincompat5005.U):
+ This variable contains y if this version of Perl should be
+ binary-compatible with Perl 5.005.
+
+binexp (bin.U):
+ This is the same as the bin variable, but is filename expanded at
+ configuration time, for use in your makefiles.
+
+bison (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+byacc (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the byacc program. After Configure runs,
+ the value is reset to a plain "byacc" and is not useful.
+
+byteorder (byteorder.U):
+ This variable holds the byte order. In the following, larger digits
+ indicate more significance. The variable byteorder is either 4321
+ on a big-endian machine, or 1234 on a little-endian, or 87654321
+ on a Cray ... or 3412 with weird order !
+
+c (n.U):
+ This variable contains the \c string if that is what causes the echo
+ command to suppress newline. Otherwise it is null. Correct usage is
+ $echo $n "prompt for a question: $c".
+
+castflags (d_castneg.U):
+ This variable contains a flag that precise difficulties the
+ compiler has casting odd floating values to unsigned long:
+ 0 = ok
+ 1 = couldn't cast < 0
+ 2 = couldn't cast >= 0x80000000
+ 4 = couldn't cast in argument expression list
+
+cat (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the cat program. After Configure runs,
+ the value is reset to a plain "cat" and is not useful.
+
+cc (cc.U):
+ This variable holds the name of a command to execute a C compiler which
+ can resolve multiple global references that happen to have the same
+ name. Usual values are 'cc' and 'gcc'.
+ Fervent ANSI compilers may be called 'c89'. AIX has xlc.
+
+cccdlflags (dlsrc.U):
+ This variable contains any special flags that might need to be
+ passed with 'cc -c' to compile modules to be used to create a shared
+ library that will be used for dynamic loading. For hpux, this
+ should be +z. It is up to the makefile to use it.
+
+ccdlflags (dlsrc.U):
+ This variable contains any special flags that might need to be
+ passed to cc to link with a shared library for dynamic loading.
+ It is up to the makefile to use it. For sunos 4.1, it should
+ be empty.
+
+ccflags (ccflags.U):
+ This variable contains any additional C compiler flags desired by
+ the user. It is up to the Makefile to use this.
+
+ccflags_uselargefiles (uselfs.U):
+ This variable contains the compiler flags needed by large file builds
+ and added to ccflags by hints files.
+
+ccname (Checkcc.U):
+ This can set either by hints files or by Configure. If using
+ gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
+ Some platforms, however, make good use of this by storing the
+ flavor of the C compiler being used here. For example if using
+ the Sun WorkShop suite, ccname will be 'workshop'.
+
+ccsymbols (Cppsym.U):
+ The variable contains the symbols defined by the C compiler alone.
+ The symbols defined by cpp or by cc when it calls cpp are not in
+ this list, see cppsymbols and cppccsymbols.
+ The list is a space-separated list of symbol=value tokens.
+
+ccversion (Checkcc.U):
+ This can set either by hints files or by Configure. If using
+ a (non-gcc) vendor cc, this variable may contain a version for
+ the compiler.
+
+cf_by (cf_who.U):
+ Login name of the person who ran the Configure script and answered the
+ questions. This is used to tag both config.sh and config_h.SH.
+
+cf_email (cf_email.U):
+ Electronic mail address of the person who ran Configure. This can be
+ used by units that require the user's e-mail, like MailList.U.
+
+cf_time (cf_who.U):
+ Holds the output of the "date" command when the configuration file was
+ produced. This is used to tag both config.sh and config_h.SH.
+
+charsize (charsize.U):
+ This variable contains the value of the CHARSIZE symbol, which
+ indicates to the C program how many bytes there are in a character.
+
+chgrp (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+chmod (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+chown (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+clocktype (d_times.U):
+ This variable holds the type returned by times(). It can be long,
+ or clock_t on BSD sites (in which case <sys/types.h> should be
+ included).
+
+comm (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the comm program. After Configure runs,
+ the value is reset to a plain "comm" and is not useful.
+
+compress (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+CONFIGDOTSH (Oldsyms.U):
+ This is set to 'true' in config.sh so that a shell script
+ sourcing config.sh can tell if it has been sourced already.
+
+contains (contains.U):
+ This variable holds the command to do a grep with a proper return
+ status. On most sane systems it is simply "grep". On insane systems
+ it is a grep followed by a cat followed by a test. This variable
+ is primarily for the use of other Configure units.
+
+cp (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the cp program. After Configure runs,
+ the value is reset to a plain "cp" and is not useful.
+
+cpio (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+cpp (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the cpp program. After Configure runs,
+ the value is reset to a plain "cpp" and is not useful.
+
+cpp_stuff (cpp_stuff.U):
+ This variable contains an identification of the catenation mechanism
+ used by the C preprocessor.
+
+cppccsymbols (Cppsym.U):
+ The variable contains the symbols defined by the C compiler
+ when it calls cpp. The symbols defined by the cc alone or cpp
+ alone are not in this list, see ccsymbols and cppsymbols.
+ The list is a space-separated list of symbol=value tokens.
+
+cppflags (ccflags.U):
+ This variable holds the flags that will be passed to the C pre-
+ processor. It is up to the Makefile to use it.
+
+cpplast (cppstdin.U):
+ This variable has the same functionality as cppminus, only it applies
+ to cpprun and not cppstdin.
+
+cppminus (cppstdin.U):
+ This variable contains the second part of the string which will invoke
+ the C preprocessor on the standard input and produce to standard
+ output. This variable will have the value "-" if cppstdin needs
+ a minus to specify standard input, otherwise the value is "".
+
+cpprun (cppstdin.U):
+ This variable contains the command which will invoke a C preprocessor
+ on standard input and put the output to stdout. It is guaranteed not
+ to be a wrapper and may be a null string if no preprocessor can be
+ made directly available. This preprocessor might be different from the
+ one used by the C compiler. Don't forget to append cpplast after the
+ preprocessor options.
+
+cppstdin (cppstdin.U):
+ This variable contains the command which will invoke the C
+ preprocessor on standard input and put the output to stdout.
+ It is primarily used by other Configure units that ask about
+ preprocessor symbols.
+
+cppsymbols (Cppsym.U):
+ The variable contains the symbols defined by the C preprocessor
+ alone. The symbols defined by cc or by cc when it calls cpp are
+ not in this list, see ccsymbols and cppccsymbols.
+ The list is a space-separated list of symbol=value tokens.
+
+crosscompile (crosscompile.U):
+ This variable conditionally defines the CROSSCOMPILE symbol
+ which signifies that the build process is be a cross-compilation.
+ This is normally set by hints files or from Configure command line.
+
+cryptlib (d_crypt.U):
+ This variable holds -lcrypt or the path to a libcrypt.a archive if
+ the crypt() function is not defined in the standard C library. It is
+ up to the Makefile to use this.
+
+csh (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the csh program. After Configure runs,
+ the value is reset to a plain "csh" and is not useful.
+
+d_access (d_access.U):
+ This variable conditionally defines HAS_ACCESS if the access() system
+ call is available to check for access permissions using real IDs.
+
+d_accessx (d_accessx.U):
+ This variable conditionally defines the HAS_ACCESSX symbol, which
+ indicates to the C program that the accessx() routine is available.
+
+d_alarm (d_alarm.U):
+ This variable conditionally defines the HAS_ALARM symbol, which
+ indicates to the C program that the alarm() routine is available.
+
+d_archlib (archlib.U):
+ This variable conditionally defines ARCHLIB to hold the pathname
+ of architecture-dependent library files for $package. If
+ $archlib is the same as $privlib, then this is set to undef.
+
+d_atolf (atolf.U):
+ This variable conditionally defines the HAS_ATOLF symbol, which
+ indicates to the C program that the atolf() routine is available.
+
+d_atoll (atoll.U):
+ This variable conditionally defines the HAS_ATOLL symbol, which
+ indicates to the C program that the atoll() routine is available.
+
+d_attribut (d_attribut.U):
+ This variable conditionally defines HASATTRIBUTE, which
+ indicates the C compiler can check for function attributes,
+ such as printf formats.
+
+d_bcmp (d_bcmp.U):
+ This variable conditionally defines the HAS_BCMP symbol if
+ the bcmp() routine is available to compare strings.
+
+d_bcopy (d_bcopy.U):
+ This variable conditionally defines the HAS_BCOPY symbol if
+ the bcopy() routine is available to copy strings.
+
+d_bincompat5005 (bincompat5005.U):
+ This variable conditionally defines BINCOMPAT5005 so that embed.h
+ can take special action if this version of Perl should be
+ binary-compatible with Perl 5.005. This is impossible for builds
+ that use features like threads and multiplicity it is always $undef
+ for those versions.
+
+d_bsd (Guess.U):
+ This symbol conditionally defines the symbol BSD when running on a
+ BSD system.
+
+d_bsdgetpgrp (d_getpgrp.U):
+ This variable conditionally defines USE_BSD_GETPGRP if
+ getpgrp needs one arguments whereas USG one needs none.
+
+d_bsdsetpgrp (d_setpgrp.U):
+ This variable conditionally defines USE_BSD_SETPGRP if
+ setpgrp needs two arguments whereas USG one needs none.
+ See also d_setpgid for a POSIX interface.
+
+d_bzero (d_bzero.U):
+ This variable conditionally defines the HAS_BZERO symbol if
+ the bzero() routine is available to set memory to 0.
+
+d_casti32 (d_casti32.U):
+ This variable conditionally defines CASTI32, which indicates
+ whether the C compiler can cast large floats to 32-bit ints.
+
+d_castneg (d_castneg.U):
+ This variable conditionally defines CASTNEG, which indicates
+ wether the C compiler can cast negative float to unsigned.
+
+d_charvspr (d_vprintf.U):
+ This variable conditionally defines CHARVSPRINTF if this system
+ has vsprintf returning type (char*). The trend seems to be to
+ declare it as "int vsprintf()".
+
+d_chown (d_chown.U):
+ This variable conditionally defines the HAS_CHOWN symbol, which
+ indicates to the C program that the chown() routine is available.
+
+d_chroot (d_chroot.U):
+ This variable conditionally defines the HAS_CHROOT symbol, which
+ indicates to the C program that the chroot() routine is available.
+
+d_chsize (d_chsize.U):
+ This variable conditionally defines the CHSIZE symbol, which
+ indicates to the C program that the chsize() routine is available
+ to truncate files. You might need a -lx to get this routine.
+
+d_closedir (d_closedir.U):
+ This variable conditionally defines HAS_CLOSEDIR if closedir() is
+ available.
+
+d_const (d_const.U):
+ This variable conditionally defines the HASCONST symbol, which
+ indicates to the C program that this C compiler knows about the
+ const type.
+
+d_crypt (d_crypt.U):
+ This variable conditionally defines the CRYPT symbol, which
+ indicates to the C program that the crypt() routine is available
+ to encrypt passwords and the like.
+
+d_csh (d_csh.U):
+ This variable conditionally defines the CSH symbol, which
+ indicates to the C program that the C-shell exists.
+
+d_cuserid (d_cuserid.U):
+ This variable conditionally defines the HAS_CUSERID symbol, which
+ indicates to the C program that the cuserid() routine is available
+ to get character login names.
+
+d_dbl_dig (d_dbl_dig.U):
+ This variable conditionally defines d_dbl_dig if this system's
+ header files provide DBL_DIG, which is the number of significant
+ digits in a double precision number.
+
+d_difftime (d_difftime.U):
+ This variable conditionally defines the HAS_DIFFTIME symbol, which
+ indicates to the C program that the difftime() routine is available.
+
+d_dirnamlen (i_dirent.U):
+ This variable conditionally defines DIRNAMLEN, which indicates
+ to the C program that the length of directory entry names is
+ provided by a d_namelen field.
+
+d_dlerror (d_dlerror.U):
+ This variable conditionally defines the HAS_DLERROR symbol, which
+ indicates to the C program that the dlerror() routine is available.
+
+d_dlopen (d_dlopen.U):
+ This variable conditionally defines the HAS_DLOPEN symbol, which
+ indicates to the C program that the dlopen() routine is available.
+
+d_dlsymun (d_dlsymun.U):
+ This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
+ indicates that we need to prepend an underscore to the symbol
+ name before calling dlsym().
+
+d_dosuid (d_dosuid.U):
+ This variable conditionally defines the symbol DOSUID, which
+ tells the C program that it should insert setuid emulation code
+ on hosts which have setuid #! scripts disabled.
+
+d_drand48proto (d_drand48proto.U):
+ This variable conditionally defines the HAS_DRAND48_PROTO symbol,
+ which indicates to the C program that the system provides
+ a prototype for the drand48() function. Otherwise, it is
+ up to the program to supply one.
+
+d_dup2 (d_dup2.U):
+ This variable conditionally defines HAS_DUP2 if dup2() is
+ available to duplicate file descriptors.
+
+d_eaccess (d_eaccess.U):
+ This variable conditionally defines the HAS_EACCESS symbol, which
+ indicates to the C program that the eaccess() routine is available.
+
+d_endgrent (d_endgrent.U):
+ This variable conditionally defines the HAS_ENDGRENT symbol, which
+ indicates to the C program that the endgrent() routine is available
+ for sequential access of the group database.
+
+d_endhent (d_endhent.U):
+ This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
+ available to close whatever was being used for host queries.
+
+d_endnent (d_endnent.U):
+ This variable conditionally defines HAS_ENDNETENT if endnetent() is
+ available to close whatever was being used for network queries.
+
+d_endpent (d_endpent.U):
+ This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
+ available to close whatever was being used for protocol queries.
+
+d_endpwent (d_endpwent.U):
+ This variable conditionally defines the HAS_ENDPWENT symbol, which
+ indicates to the C program that the endpwent() routine is available
+ for sequential access of the passwd database.
+
+d_endsent (d_endsent.U):
+ This variable conditionally defines HAS_ENDSERVENT if endservent() is
+ available to close whatever was being used for service queries.
+
+d_eofnblk (nblock_io.U):
+ This variable conditionally defines EOF_NONBLOCK if EOF can be seen
+ when reading from a non-blocking I/O source.
+
+d_eunice (Guess.U):
+ This variable conditionally defines the symbols EUNICE and VAX, which
+ alerts the C program that it must deal with ideosyncracies of VMS.
+
+d_fchmod (d_fchmod.U):
+ This variable conditionally defines the HAS_FCHMOD symbol, which
+ indicates to the C program that the fchmod() routine is available
+ to change mode of opened files.
+
+d_fchown (d_fchown.U):
+ This variable conditionally defines the HAS_FCHOWN symbol, which
+ indicates to the C program that the fchown() routine is available
+ to change ownership of opened files.
+
+d_fcntl (d_fcntl.U):
+ This variable conditionally defines the HAS_FCNTL symbol, and indicates
+ whether the fcntl() function exists
+
+d_fcntl_can_lock (d_fcntl_can_lock.U):
+ This variable conditionally defines the FCNTL_CAN_LOCK symbol
+ and indicates whether file locking with fcntl() works.
+
+d_fd_macros (d_fd_set.U):
+ This variable contains the eventual value of the HAS_FD_MACROS symbol,
+ which indicates if your C compiler knows about the macros which
+ manipulate an fd_set.
+
+d_fd_set (d_fd_set.U):
+ This variable contains the eventual value of the HAS_FD_SET symbol,
+ which indicates if your C compiler knows about the fd_set typedef.
+
+d_fds_bits (d_fd_set.U):
+ This variable contains the eventual value of the HAS_FDS_BITS symbol,
+ which indicates if your fd_set typedef contains the fds_bits member.
+ If you have an fd_set typedef, but the dweebs who installed it did
+ a half-fast job and neglected to provide the macros to manipulate
+ an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
+
+d_fgetpos (d_fgetpos.U):
+ This variable conditionally defines HAS_FGETPOS if fgetpos() is
+ available to get the file position indicator.
+
+d_flexfnam (d_flexfnam.U):
+ This variable conditionally defines the FLEXFILENAMES symbol, which
+ indicates that the system supports filenames longer than 14 characters.
+
+d_flock (d_flock.U):
+ This variable conditionally defines HAS_FLOCK if flock() is
+ available to do file locking.
+
+d_fork (d_fork.U):
+ This variable conditionally defines the HAS_FORK symbol, which
+ indicates to the C program that the fork() routine is available.
+
+d_fpathconf (d_pathconf.U):
+ This variable conditionally defines the HAS_FPATHCONF symbol, which
+ indicates to the C program that the pathconf() routine is available
+ to determine file-system related limits and options associated
+ with a given open file descriptor.
+
+d_fpos64_t (d_fpos64_t.U):
+ This symbol will be defined if the C compiler supports fpos64_t.
+
+d_frexpl (d_frexpl.U):
+ This variable conditionally defines the HAS_FREXPL symbol, which
+ indicates to the C program that the frexpl() routine is available.
+
+d_fs_data_s (d_fs_data_s.U):
+ This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
+ which indicates that the struct fs_data is supported.
+
+d_fseeko (d_fseeko.U):
+ This variable conditionally defines the HAS_FSEEKO symbol, which
+ indicates to the C program that the fseeko() routine is available.
+
+d_fsetpos (d_fsetpos.U):
+ This variable conditionally defines HAS_FSETPOS if fsetpos() is
+ available to set the file position indicator.
+
+d_fstatfs (d_fstatfs.U):
+ This variable conditionally defines the HAS_FSTATFS symbol, which
+ indicates to the C program that the fstatfs() routine is available.
+
+d_fstatvfs (d_statvfs.U):
+ This variable conditionally defines the HAS_FSTATVFS symbol, which
+ indicates to the C program that the fstatvfs() routine is available.
+
+d_ftello (d_ftello.U):
+ This variable conditionally defines the HAS_FTELLO symbol, which
+ indicates to the C program that the ftello() routine is available.
+
+d_ftime (d_ftime.U):
+ This variable conditionally defines the HAS_FTIME symbol, which indicates
+ that the ftime() routine exists. The ftime() routine is basically
+ a sub-second accuracy clock.
+
+d_Gconvert (d_gconvert.U):
+ This variable holds what Gconvert is defined as to convert
+ floating point numbers into strings. It could be 'gconvert'
+ or a more complex macro emulating gconvert with gcvt() or sprintf.
+ Possible values are:
+ d_Gconvert='gconvert((x),(n),(t),(b))'
+ d_Gconvert='gcvt((x),(n),(b))'
+ d_Gconvert='sprintf((b),"%.*g",(n),(x))'
+
+d_getcwd (d_getcwd.U):
+ This variable conditionally defines the HAS_GETCWD symbol, which
+ indicates to the C program that the getcwd() routine is available
+ to get the current working directory.
+
+d_getespwnam (d_getespwnam.U):
+ This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
+ available to retrieve enchanced (shadow) password entries by name.
+
+d_getfsstat (d_getfsstat.U):
+ This variable conditionally defines the HAS_GETFSSTAT symbol, which
+ indicates to the C program that the getfsstat() routine is available.
+
+d_getgrent (d_getgrent.U):
+ This variable conditionally defines the HAS_GETGRENT symbol, which
+ indicates to the C program that the getgrent() routine is available
+ for sequential access of the group database.
+
+d_getgrps (d_getgrps.U):
+ This variable conditionally defines the HAS_GETGROUPS symbol, which
+ indicates to the C program that the getgroups() routine is available
+ to get the list of process groups.
+
+d_gethbyaddr (d_gethbyad.U):
+ This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
+ indicates to the C program that the gethostbyaddr() routine is available
+ to look up hosts by their IP addresses.
+
+d_gethbyname (d_gethbynm.U):
+ This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
+ indicates to the C program that the gethostbyname() routine is available
+ to look up host names in some data base or other.
+
+d_gethent (d_gethent.U):
+ This variable conditionally defines HAS_GETHOSTENT if gethostent() is
+ available to look up host names in some data base or another.
+
+d_gethname (d_gethname.U):
+ This variable conditionally defines the HAS_GETHOSTNAME symbol, which
+ indicates to the C program that the gethostname() routine may be
+ used to derive the host name.
+
+d_gethostprotos (d_gethostprotos.U):
+ This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
+ which indicates to the C program that <netdb.h> supplies
+ prototypes for the various gethost*() functions.
+ See also netdbtype.U for probing for various netdb types.
+
+d_getlogin (d_getlogin.U):
+ This variable conditionally defines the HAS_GETLOGIN symbol, which
+ indicates to the C program that the getlogin() routine is available
+ to get the login name.
+
+d_getmnt (d_getmnt.U):
+ This variable conditionally defines the HAS_GETMNT symbol, which
+ indicates to the C program that the getmnt() routine is available
+ to retrieve one or more mount info blocks by filename.
+
+d_getmntent (d_getmntent.U):
+ This variable conditionally defines the HAS_GETMNTENT symbol, which
+ indicates to the C program that the getmntent() routine is available
+ to iterate through mounted files to get their mount info.
+
+d_getnbyaddr (d_getnbyad.U):
+ This variable conditionally defines the HAS_GETNETBYADDR symbol, which
+ indicates to the C program that the getnetbyaddr() routine is available
+ to look up networks by their IP addresses.
+
+d_getnbyname (d_getnbynm.U):
+ This variable conditionally defines the HAS_GETNETBYNAME symbol, which
+ indicates to the C program that the getnetbyname() routine is available
+ to look up networks by their names.
+
+d_getnent (d_getnent.U):
+ This variable conditionally defines HAS_GETNETENT if getnetent() is
+ available to look up network names in some data base or another.
+
+d_getnetprotos (d_getnetprotos.U):
+ This variable conditionally defines the HAS_GETNET_PROTOS symbol,
+ which indicates to the C program that <netdb.h> supplies
+ prototypes for the various getnet*() functions.
+ See also netdbtype.U for probing for various netdb types.
+
+d_getpbyname (d_getprotby.U):
+ This variable conditionally defines the HAS_GETPROTOBYNAME
+ symbol, which indicates to the C program that the
+ getprotobyname() routine is available to look up protocols
+ by their name.
+
+d_getpbynumber (d_getprotby.U):
+ This variable conditionally defines the HAS_GETPROTOBYNUMBER
+ symbol, which indicates to the C program that the
+ getprotobynumber() routine is available to look up protocols
+ by their number.
+
+d_getpent (d_getpent.U):
+ This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
+ available to look up protocols in some data base or another.
+
+d_getpgid (d_getpgid.U):
+ This variable conditionally defines the HAS_GETPGID symbol, which
+ indicates to the C program that the getpgid(pid) function
+ is available to get the process group id.
+
+d_getpgrp2 (d_getpgrp2.U):
+ This variable conditionally defines the HAS_GETPGRP2 symbol, which
+ indicates to the C program that the getpgrp2() (as in DG/UX) routine
+ is available to get the current process group.
+
+d_getpgrp (d_getpgrp.U):
+ This variable conditionally defines HAS_GETPGRP if getpgrp() is
+ available to get the current process group.
+
+d_getppid (d_getppid.U):
+ This variable conditionally defines the HAS_GETPPID symbol, which
+ indicates to the C program that the getppid() routine is available
+ to get the parent process ID.
+
+d_getprior (d_getprior.U):
+ This variable conditionally defines HAS_GETPRIORITY if getpriority()
+ is available to get a process's priority.
+
+d_getprotoprotos (d_getprotoprotos.U):
+ This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
+ which indicates to the C program that <netdb.h> supplies
+ prototypes for the various getproto*() functions.
+ See also netdbtype.U for probing for various netdb types.
+
+d_getprpwnam (d_getprpwnam.U):
+ This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
+ available to retrieve protected (shadow) password entries by name.
+
+d_getpwent (d_getpwent.U):
+ This variable conditionally defines the HAS_GETPWENT symbol, which
+ indicates to the C program that the getpwent() routine is available
+ for sequential access of the passwd database.
+
+d_getsbyname (d_getsrvby.U):
+ This variable conditionally defines the HAS_GETSERVBYNAME
+ symbol, which indicates to the C program that the
+ getservbyname() routine is available to look up services
+ by their name.
+
+d_getsbyport (d_getsrvby.U):
+ This variable conditionally defines the HAS_GETSERVBYPORT
+ symbol, which indicates to the C program that the
+ getservbyport() routine is available to look up services
+ by their port.
+
+d_getsent (d_getsent.U):
+ This variable conditionally defines HAS_GETSERVENT if getservent() is
+ available to look up network services in some data base or another.
+
+d_getservprotos (d_getservprotos.U):
+ This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
+ which indicates to the C program that <netdb.h> supplies
+ prototypes for the various getserv*() functions.
+ See also netdbtype.U for probing for various netdb types.
+
+d_getspnam (d_getspnam.U):
+ This variable conditionally defines HAS_GETSPNAM if getspnam() is
+ available to retrieve SysV shadow password entries by name.
+
+d_gettimeod (d_ftime.U):
+ This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
+ indicates that the gettimeofday() system call exists (to obtain a
+ sub-second accuracy clock). You should probably include <sys/resource.h>.
+
+d_gnulibc (d_gnulibc.U):
+ Defined if we're dealing with the GNU C Library.
+
+d_grpasswd (i_grp.U):
+ This variable conditionally defines GRPASSWD, which indicates
+ that struct group in <grp.h> contains gr_passwd.
+
+d_hasmntopt (d_hasmntopt.U):
+ This variable conditionally defines the HAS_HASMNTOPT symbol, which
+ indicates to the C program that the hasmntopt() routine is available
+ to query the mount options of file systems.
+
+d_htonl (d_htonl.U):
+ This variable conditionally defines HAS_HTONL if htonl() and its
+ friends are available to do network order byte swapping.
+
+d_iconv (d_iconv.U):
+ This variable conditionally defines the HAS_ICONV symbol, which
+ indicates to the C program that the iconv() routine is available.
+
+d_index (d_strchr.U):
+ This variable conditionally defines HAS_INDEX if index() and
+ rindex() are available for string searching.
+
+d_inetaton (d_inetaton.U):
+ This variable conditionally defines the HAS_INET_ATON symbol, which
+ indicates to the C program that the inet_aton() function is available
+ to parse IP address "dotted-quad" strings.
+
+d_int64_t (d_int64_t.U):
+ This symbol will be defined if the C compiler supports int64_t.
+
+d_isascii (d_isascii.U):
+ This variable conditionally defines the HAS_ISASCII constant,
+ which indicates to the C program that isascii() is available.
+
+d_isnan (d_isnan.U):
+ This variable conditionally defines the HAS_ISNAN symbol, which
+ indicates to the C program that the isnan() routine is available.
+
+d_isnanl (d_isnanl.U):
+ This variable conditionally defines the HAS_ISNANL symbol, which
+ indicates to the C program that the isnanl() routine is available.
+
+d_killpg (d_killpg.U):
+ This variable conditionally defines the HAS_KILLPG symbol, which
+ indicates to the C program that the killpg() routine is available
+ to kill process groups.
+
+d_lchown (d_lchown.U):
+ This variable conditionally defines the HAS_LCHOWN symbol, which
+ indicates to the C program that the lchown() routine is available
+ to operate on a symbolic link (instead of following the link).
+
+d_ldbl_dig (d_ldbl_dig.U):
+ This variable conditionally defines d_ldbl_dig if this system's
+ header files provide LDBL_DIG, which is the number of significant
+ digits in a long double precision number.
+
+d_link (d_link.U):
+ This variable conditionally defines HAS_LINK if link() is
+ available to create hard links.
+
+d_locconv (d_locconv.U):
+ This variable conditionally defines HAS_LOCALECONV if localeconv() is
+ available for numeric and monetary formatting conventions.
+
+d_lockf (d_lockf.U):
+ This variable conditionally defines HAS_LOCKF if lockf() is
+ available to do file locking.
+
+d_longdbl (d_longdbl.U):
+ This variable conditionally defines HAS_LONG_DOUBLE if
+ the long double type is supported.
+
+d_longlong (d_longlong.U):
+ This variable conditionally defines HAS_LONG_LONG if
+ the long long type is supported.
+
+d_lseekproto (d_lseekproto.U):
+ This variable conditionally defines the HAS_LSEEK_PROTO symbol,
+ which indicates to the C program that the system provides
+ a prototype for the lseek() function. Otherwise, it is
+ up to the program to supply one.
+
+d_lstat (d_lstat.U):
+ This variable conditionally defines HAS_LSTAT if lstat() is
+ available to do file stats on symbolic links.
+
+d_madvise (d_madvise.U):
+ This variable conditionally defines HAS_MADVISE if madvise() is
+ available to map a file into memory.
+
+d_mblen (d_mblen.U):
+ This variable conditionally defines the HAS_MBLEN symbol, which
+ indicates to the C program that the mblen() routine is available
+ to find the number of bytes in a multibye character.
+
+d_mbstowcs (d_mbstowcs.U):
+ This variable conditionally defines the HAS_MBSTOWCS symbol, which
+ indicates to the C program that the mbstowcs() routine is available
+ to convert a multibyte string into a wide character string.
+
+d_mbtowc (d_mbtowc.U):
+ This variable conditionally defines the HAS_MBTOWC symbol, which
+ indicates to the C program that the mbtowc() routine is available
+ to convert multibyte to a wide character.
+
+d_memchr (d_memchr.U):
+ This variable conditionally defines the HAS_MEMCHR symbol, which
+ indicates to the C program that the memchr() routine is available
+ to locate characters within a C string.
+
+d_memcmp (d_memcmp.U):
+ This variable conditionally defines the HAS_MEMCMP symbol, which
+ indicates to the C program that the memcmp() routine is available
+ to compare blocks of memory.
+
+d_memcpy (d_memcpy.U):
+ This variable conditionally defines the HAS_MEMCPY symbol, which
+ indicates to the C program that the memcpy() routine is available
+ to copy blocks of memory.
+
+d_memmove (d_memmove.U):
+ This variable conditionally defines the HAS_MEMMOVE symbol, which
+ indicates to the C program that the memmove() routine is available
+ to copy potentatially overlapping blocks of memory.
+
+d_memset (d_memset.U):
+ This variable conditionally defines the HAS_MEMSET symbol, which
+ indicates to the C program that the memset() routine is available
+ to set blocks of memory.
+
+d_mkdir (d_mkdir.U):
+ This variable conditionally defines the HAS_MKDIR symbol, which
+ indicates to the C program that the mkdir() routine is available
+ to create directories..
+
+d_mkdtemp (d_mkdtemp.U):
+ This variable conditionally defines the HAS_MKDTEMP symbol, which
+ indicates to the C program that the mkdtemp() routine is available
+ to exclusively create a uniquely named temporary directory.
+
+d_mkfifo (d_mkfifo.U):
+ This variable conditionally defines the HAS_MKFIFO symbol, which
+ indicates to the C program that the mkfifo() routine is available.
+
+d_mkstemp (d_mkstemp.U):
+ This variable conditionally defines the HAS_MKSTEMP symbol, which
+ indicates to the C program that the mkstemp() routine is available
+ to exclusively create and open a uniquely named temporary file.
+
+d_mkstemps (d_mkstemps.U):
+ This variable conditionally defines the HAS_MKSTEMPS symbol, which
+ indicates to the C program that the mkstemps() routine is available
+ to exclusively create and open a uniquely named (with a suffix)
+ temporary file.
+
+d_mktime (d_mktime.U):
+ This variable conditionally defines the HAS_MKTIME symbol, which
+ indicates to the C program that the mktime() routine is available.
+
+d_mmap (d_mmap.U):
+ This variable conditionally defines HAS_MMAP if mmap() is
+ available to map a file into memory.
+
+d_modfl (d_modfl.U):
+ This variable conditionally defines the HAS_MODFL symbol, which
+ indicates to the C program that the modfl() routine is available.
+
+d_mprotect (d_mprotect.U):
+ This variable conditionally defines HAS_MPROTECT if mprotect() is
+ available to modify the access protection of a memory mapped file.
+
+d_msg (d_msg.U):
+ This variable conditionally defines the HAS_MSG symbol, which
+ indicates that the entire msg*(2) library is present.
+
+d_msg_ctrunc (d_socket.U):
+ This variable conditionally defines the HAS_MSG_CTRUNC symbol,
+ which indicates that the MSG_CTRUNC is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_dontroute (d_socket.U):
+ This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
+ which indicates that the MSG_DONTROUTE is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_oob (d_socket.U):
+ This variable conditionally defines the HAS_MSG_OOB symbol,
+ which indicates that the MSG_OOB is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_peek (d_socket.U):
+ This variable conditionally defines the HAS_MSG_PEEK symbol,
+ which indicates that the MSG_PEEK is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_proxy (d_socket.U):
+ This variable conditionally defines the HAS_MSG_PROXY symbol,
+ which indicates that the MSG_PROXY is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msgctl (d_msgctl.U):
+ This variable conditionally defines the HAS_MSGCTL symbol, which
+ indicates to the C program that the msgctl() routine is available.
+
+d_msgget (d_msgget.U):
+ This variable conditionally defines the HAS_MSGGET symbol, which
+ indicates to the C program that the msgget() routine is available.
+
+d_msgrcv (d_msgrcv.U):
+ This variable conditionally defines the HAS_MSGRCV symbol, which
+ indicates to the C program that the msgrcv() routine is available.
+
+d_msgsnd (d_msgsnd.U):
+ This variable conditionally defines the HAS_MSGSND symbol, which
+ indicates to the C program that the msgsnd() routine is available.
+
+d_msync (d_msync.U):
+ This variable conditionally defines HAS_MSYNC if msync() is
+ available to synchronize a mapped file.
+
+d_munmap (d_munmap.U):
+ This variable conditionally defines HAS_MUNMAP if munmap() is
+ available to unmap a region mapped by mmap().
+
+d_mymalloc (mallocsrc.U):
+ This variable conditionally defines MYMALLOC in case other parts
+ of the source want to take special action if MYMALLOC is used.
+ This may include different sorts of profiling or error detection.
+
+d_nice (d_nice.U):
+ This variable conditionally defines the HAS_NICE symbol, which
+ indicates to the C program that the nice() routine is available.
+
+d_nv_preserves_uv (perlxv.U):
+ This variable indicates whether a variable of type nvtype
+ can preserve all the bits a variable of type uvtype.
+
+d_nv_preserves_uv_bits (perlxv.U):
+ This variable indicates how many of bits type uvtype
+ a variable nvtype can preserve.
+
+d_off64_t (d_off64_t.U):
+ This symbol will be defined if the C compiler supports off64_t.
+
+d_old_pthread_create_joinable (d_pthrattrj.U):
+ This variable conditionally defines pthread_create_joinable.
+ undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
+
+d_oldpthreads (usethreads.U):
+ This variable conditionally defines the OLD_PTHREADS_API symbol,
+ and indicates that Perl should be built to use the old
+ draft POSIX threads API. This is only potentially meaningful if
+ usethreads is set.
+
+d_oldsock (d_socket.U):
+ This variable conditionally defines the OLDSOCKET symbol, which
+ indicates that the BSD socket interface is based on 4.1c and not 4.2.
+
+d_open3 (d_open3.U):
+ This variable conditionally defines the HAS_OPEN3 manifest constant,
+ which indicates to the C program that the 3 argument version of
+ the open(2) function is available.
+
+d_pathconf (d_pathconf.U):
+ This variable conditionally defines the HAS_PATHCONF symbol, which
+ indicates to the C program that the pathconf() routine is available
+ to determine file-system related limits and options associated
+ with a given filename.
+
+d_pause (d_pause.U):
+ This variable conditionally defines the HAS_PAUSE symbol, which
+ indicates to the C program that the pause() routine is available
+ to suspend a process until a signal is received.
+
+d_perl_otherlibdirs (otherlibdirs.U):
+ This variable conditionally defines PERL_OTHERLIBDIRS, which
+ contains a colon-separated set of paths for the perl binary to
+ include in @INC. See also otherlibdirs.
+
+d_phostname (d_gethname.U):
+ This variable conditionally defines the HAS_PHOSTNAME symbol, which
+ contains the shell command which, when fed to popen(), may be
+ used to derive the host name.
+
+d_pipe (d_pipe.U):
+ This variable conditionally defines the HAS_PIPE symbol, which
+ indicates to the C program that the pipe() routine is available
+ to create an inter-process channel.
+
+d_poll (d_poll.U):
+ This variable conditionally defines the HAS_POLL symbol, which
+ indicates to the C program that the poll() routine is available
+ to poll active file descriptors.
+
+d_portable (d_portable.U):
+ This variable conditionally defines the PORTABLE symbol, which
+ indicates to the C program that it should not assume that it is
+ running on the machine it was compiled on.
+
+d_PRId64 (quadfio.U):
+ This variable conditionally defines the PERL_PRId64 symbol, which
+ indiciates that stdio has a symbol to print 64-bit decimal numbers.
+
+d_PRIeldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to print long doubles.
+
+d_PRIEUldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to print long doubles.
+ The 'U' in the name is to separate this from d_PRIeldbl so that even
+ case-blind systems can see the difference.
+
+d_PRIfldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to print long doubles.
+
+d_PRIFUldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to print long doubles.
+ The 'U' in the name is to separate this from d_PRIfldbl so that even
+ case-blind systems can see the difference.
+
+d_PRIgldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to print long doubles.
+
+d_PRIGUldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to print long doubles.
+ The 'U' in the name is to separate this from d_PRIgldbl so that even
+ case-blind systems can see the difference.
+
+d_PRIi64 (quadfio.U):
+ This variable conditionally defines the PERL_PRIi64 symbol, which
+ indiciates that stdio has a symbol to print 64-bit decimal numbers.
+
+d_PRIo64 (quadfio.U):
+ This variable conditionally defines the PERL_PRIo64 symbol, which
+ indiciates that stdio has a symbol to print 64-bit octal numbers.
+
+d_PRIu64 (quadfio.U):
+ This variable conditionally defines the PERL_PRIu64 symbol, which
+ indiciates that stdio has a symbol to print 64-bit unsigned decimal
+ numbers.
+
+d_PRIx64 (quadfio.U):
+ This variable conditionally defines the PERL_PRIx64 symbol, which
+ indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
+
+d_PRIXU64 (quadfio.U):
+ This variable conditionally defines the PERL_PRIXU64 symbol, which
+ indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
+ The 'U' in the name is to separate this from d_PRIx64 so that even
+ case-blind systems can see the difference.
+
+d_pthread_yield (d_pthread_y.U):
+ This variable conditionally defines the HAS_PTHREAD_YIELD
+ symbol if the pthread_yield routine is available to yield
+ the execution of the current thread.
+
+d_pwage (i_pwd.U):
+ This variable conditionally defines PWAGE, which indicates
+ that struct passwd contains pw_age.
+
+d_pwchange (i_pwd.U):
+ This variable conditionally defines PWCHANGE, which indicates
+ that struct passwd contains pw_change.
+
+d_pwclass (i_pwd.U):
+ This variable conditionally defines PWCLASS, which indicates
+ that struct passwd contains pw_class.
+
+d_pwcomment (i_pwd.U):
+ This variable conditionally defines PWCOMMENT, which indicates
+ that struct passwd contains pw_comment.
+
+d_pwexpire (i_pwd.U):
+ This variable conditionally defines PWEXPIRE, which indicates
+ that struct passwd contains pw_expire.
+
+d_pwgecos (i_pwd.U):
+ This variable conditionally defines PWGECOS, which indicates
+ that struct passwd contains pw_gecos.
+
+d_pwpasswd (i_pwd.U):
+ This variable conditionally defines PWPASSWD, which indicates
+ that struct passwd contains pw_passwd.
+
+d_pwquota (i_pwd.U):
+ This variable conditionally defines PWQUOTA, which indicates
+ that struct passwd contains pw_quota.
+
+d_qgcvt (d_qgcvt.U):
+ This variable conditionally defines the HAS_QGCVT symbol, which
+ indicates to the C program that the qgcvt() routine is available.
+
+d_quad (quadtype.U):
+ This variable, if defined, tells that there's a 64-bit integer type,
+ quadtype.
+
+d_readdir (d_readdir.U):
+ This variable conditionally defines HAS_READDIR if readdir() is
+ available to read directory entries.
+
+d_readlink (d_readlink.U):
+ This variable conditionally defines the HAS_READLINK symbol, which
+ indicates to the C program that the readlink() routine is available
+ to read the value of a symbolic link.
+
+d_rename (d_rename.U):
+ This variable conditionally defines the HAS_RENAME symbol, which
+ indicates to the C program that the rename() routine is available
+ to rename files.
+
+d_rewinddir (d_readdir.U):
+ This variable conditionally defines HAS_REWINDDIR if rewinddir() is
+ available.
+
+d_rmdir (d_rmdir.U):
+ This variable conditionally defines HAS_RMDIR if rmdir() is
+ available to remove directories.
+
+d_safebcpy (d_safebcpy.U):
+ This variable conditionally defines the HAS_SAFE_BCOPY symbol if
+ the bcopy() routine can do overlapping copies.
+
+d_safemcpy (d_safemcpy.U):
+ This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
+ the memcpy() routine can do overlapping copies.
+
+d_sanemcmp (d_sanemcmp.U):
+ This variable conditionally defines the HAS_SANE_MEMCMP symbol if
+ the memcpy() routine is available and can be used to compare relative
+ magnitudes of chars with their high bits set.
+
+d_sched_yield (d_pthread_y.U):
+ This variable conditionally defines the HAS_SCHED_YIELD
+ symbol if the sched_yield routine is available to yield
+ the execution of the current thread.
+
+d_scm_rights (d_socket.U):
+ This variable conditionally defines the HAS_SCM_RIGHTS symbol,
+ which indicates that the SCM_RIGHTS is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_SCNfldbl (longdblfio.U):
+ This variable conditionally defines the PERL_PRIfldbl symbol, which
+ indiciates that stdio has a symbol to scan long doubles.
+
+d_seekdir (d_readdir.U):
+ This variable conditionally defines HAS_SEEKDIR if seekdir() is
+ available.
+
+d_select (d_select.U):
+ This variable conditionally defines HAS_SELECT if select() is
+ available to select active file descriptors. A <sys/time.h>
+ inclusion may be necessary for the timeout field.
+
+d_sem (d_sem.U):
+ This variable conditionally defines the HAS_SEM symbol, which
+ indicates that the entire sem*(2) library is present.
+
+d_semctl (d_semctl.U):
+ This variable conditionally defines the HAS_SEMCTL symbol, which
+ indicates to the C program that the semctl() routine is available.
+
+d_semctl_semid_ds (d_union_semun.U):
+ This variable conditionally defines USE_SEMCTL_SEMID_DS, which
+ indicates that struct semid_ds * is to be used for semctl IPC_STAT.
+
+d_semctl_semun (d_union_semun.U):
+ This variable conditionally defines USE_SEMCTL_SEMUN, which
+ indicates that union semun is to be used for semctl IPC_STAT.
+
+d_semget (d_semget.U):
+ This variable conditionally defines the HAS_SEMGET symbol, which
+ indicates to the C program that the semget() routine is available.
+
+d_semop (d_semop.U):
+ This variable conditionally defines the HAS_SEMOP symbol, which
+ indicates to the C program that the semop() routine is available.
+
+d_setegid (d_setegid.U):
+ This variable conditionally defines the HAS_SETEGID symbol, which
+ indicates to the C program that the setegid() routine is available
+ to change the effective gid of the current program.
+
+d_seteuid (d_seteuid.U):
+ This variable conditionally defines the HAS_SETEUID symbol, which
+ indicates to the C program that the seteuid() routine is available
+ to change the effective uid of the current program.
+
+d_setgrent (d_setgrent.U):
+ This variable conditionally defines the HAS_SETGRENT symbol, which
+ indicates to the C program that the setgrent() routine is available
+ for initializing sequential access to the group database.
+
+d_setgrps (d_setgrps.U):
+ This variable conditionally defines the HAS_SETGROUPS symbol, which
+ indicates to the C program that the setgroups() routine is available
+ to set the list of process groups.
+
+d_sethent (d_sethent.U):
+ This variable conditionally defines HAS_SETHOSTENT if sethostent() is
+ available.
+
+d_setlinebuf (d_setlnbuf.U):
+ This variable conditionally defines the HAS_SETLINEBUF symbol, which
+ indicates to the C program that the setlinebuf() routine is available
+ to change stderr or stdout from block-buffered or unbuffered to a
+ line-buffered mode.
+
+d_setlocale (d_setlocale.U):
+ This variable conditionally defines HAS_SETLOCALE if setlocale() is
+ available to handle locale-specific ctype implementations.
+
+d_setnent (d_setnent.U):
+ This variable conditionally defines HAS_SETNETENT if setnetent() is
+ available.
+
+d_setpent (d_setpent.U):
+ This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
+ available.
+
+d_setpgid (d_setpgid.U):
+ This variable conditionally defines the HAS_SETPGID symbol if the
+ setpgid(pid, gpid) function is available to set process group ID.
+
+d_setpgrp2 (d_setpgrp2.U):
+ This variable conditionally defines the HAS_SETPGRP2 symbol, which
+ indicates to the C program that the setpgrp2() (as in DG/UX) routine
+ is available to set the current process group.
+
+d_setpgrp (d_setpgrp.U):
+ This variable conditionally defines HAS_SETPGRP if setpgrp() is
+ available to set the current process group.
+
+d_setprior (d_setprior.U):
+ This variable conditionally defines HAS_SETPRIORITY if setpriority()
+ is available to set a process's priority.
+
+d_setproctitle (d_setproctitle.U):
+ This variable conditionally defines the HAS_SETPROCTITLE symbol,
+ which indicates to the C program that the setproctitle() routine
+ is available.
+
+d_setpwent (d_setpwent.U):
+ This variable conditionally defines the HAS_SETPWENT symbol, which
+ indicates to the C program that the setpwent() routine is available
+ for initializing sequential access to the passwd database.
+
+d_setregid (d_setregid.U):
+ This variable conditionally defines HAS_SETREGID if setregid() is
+ available to change the real and effective gid of the current
+ process.
+
+d_setresgid (d_setregid.U):
+ This variable conditionally defines HAS_SETRESGID if setresgid() is
+ available to change the real, effective and saved gid of the current
+ process.
+
+d_setresuid (d_setreuid.U):
+ This variable conditionally defines HAS_SETREUID if setresuid() is
+ available to change the real, effective and saved uid of the current
+ process.
+
+d_setreuid (d_setreuid.U):
+ This variable conditionally defines HAS_SETREUID if setreuid() is
+ available to change the real and effective uid of the current
+ process.
+
+d_setrgid (d_setrgid.U):
+ This variable conditionally defines the HAS_SETRGID symbol, which
+ indicates to the C program that the setrgid() routine is available
+ to change the real gid of the current program.
+
+d_setruid (d_setruid.U):
+ This variable conditionally defines the HAS_SETRUID symbol, which
+ indicates to the C program that the setruid() routine is available
+ to change the real uid of the current program.
+
+d_setsent (d_setsent.U):
+ This variable conditionally defines HAS_SETSERVENT if setservent() is
+ available.
+
+d_setsid (d_setsid.U):
+ This variable conditionally defines HAS_SETSID if setsid() is
+ available to set the process group ID.
+
+d_setvbuf (d_setvbuf.U):
+ This variable conditionally defines the HAS_SETVBUF symbol, which
+ indicates to the C program that the setvbuf() routine is available
+ to change buffering on an open stdio stream.
+
+d_sfio (d_sfio.U):
+ This variable conditionally defines the USE_SFIO symbol,
+ and indicates whether sfio is available (and should be used).
+
+d_shm (d_shm.U):
+ This variable conditionally defines the HAS_SHM symbol, which
+ indicates that the entire shm*(2) library is present.
+
+d_shmat (d_shmat.U):
+ This variable conditionally defines the HAS_SHMAT symbol, which
+ indicates to the C program that the shmat() routine is available.
+
+d_shmatprototype (d_shmat.U):
+ This variable conditionally defines the HAS_SHMAT_PROTOTYPE
+ symbol, which indicates that sys/shm.h has a prototype for
+ shmat.
+
+d_shmctl (d_shmctl.U):
+ This variable conditionally defines the HAS_SHMCTL symbol, which
+ indicates to the C program that the shmctl() routine is available.
+
+d_shmdt (d_shmdt.U):
+ This variable conditionally defines the HAS_SHMDT symbol, which
+ indicates to the C program that the shmdt() routine is available.
+
+d_shmget (d_shmget.U):
+ This variable conditionally defines the HAS_SHMGET symbol, which
+ indicates to the C program that the shmget() routine is available.
+
+d_sigaction (d_sigaction.U):
+ This variable conditionally defines the HAS_SIGACTION symbol, which
+ indicates that the Vr4 sigaction() routine is available.
+
+d_sigsetjmp (d_sigsetjmp.U):
+ This variable conditionally defines the HAS_SIGSETJMP symbol,
+ which indicates that the sigsetjmp() routine is available to
+ call setjmp() and optionally save the process's signal mask.
+
+d_socket (d_socket.U):
+ This variable conditionally defines HAS_SOCKET, which indicates
+ that the BSD socket interface is supported.
+
+d_socklen_t (d_socklen_t.U):
+ This symbol will be defined if the C compiler supports socklen_t.
+
+d_sockpair (d_socket.U):
+ This variable conditionally defines the HAS_SOCKETPAIR symbol, which
+ indicates that the BSD socketpair() is supported.
+
+d_socks5_init (d_socks5_init.U):
+ This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
+ indicates to the C program that the socks5_init() routine is available.
+
+d_sqrtl (d_sqrtl.U):
+ This variable conditionally defines the HAS_SQRTL symbol, which
+ indicates to the C program that the sqrtl() routine is available.
+
+d_statblks (d_statblks.U):
+ This variable conditionally defines USE_STAT_BLOCKS
+ if this system has a stat structure declaring
+ st_blksize and st_blocks.
+
+d_statfs_f_flags (d_statfs_f_flags.U):
+ This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
+ symbol, which indicates to struct statfs from has f_flags member.
+ This kind of struct statfs is coming from sys/mount.h (BSD),
+ not from sys/statfs.h (SYSV).
+
+d_statfs_s (d_statfs_s.U):
+ This variable conditionally defines the HAS_STRUCT_STATFS symbol,
+ which indicates that the struct statfs is supported.
+
+d_statvfs (d_statvfs.U):
+ This variable conditionally defines the HAS_STATVFS symbol, which
+ indicates to the C program that the statvfs() routine is available.
+
+d_stdio_cnt_lval (d_stdstdio.U):
+ This variable conditionally defines STDIO_CNT_LVALUE if the
+ FILE_cnt macro can be used as an lvalue.
+
+d_stdio_ptr_lval (d_stdstdio.U):
+ This variable conditionally defines STDIO_PTR_LVALUE if the
+ FILE_ptr macro can be used as an lvalue.
+
+d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U):
+ This symbol is defined if using the FILE_ptr macro as an lvalue
+ to increase the pointer by n leaves File_cnt(fp) unchanged.
+
+d_stdio_ptr_lval_sets_cnt (d_stdstdio.U):
+ This symbol is defined if using the FILE_ptr macro as an lvalue
+ to increase the pointer by n has the side effect of decreasing the
+ value of File_cnt(fp) by n.
+
+d_stdio_stream_array (stdio_streams.U):
+ This variable tells whether there is an array holding
+ the stdio streams.
+
+d_stdiobase (d_stdstdio.U):
+ This variable conditionally defines USE_STDIO_BASE if this system
+ has a FILE structure declaring a usable _base field (or equivalent)
+ in stdio.h.
+
+d_stdstdio (d_stdstdio.U):
+ This variable conditionally defines USE_STDIO_PTR if this system
+ has a FILE structure declaring usable _ptr and _cnt fields (or
+ equivalent) in stdio.h.
+
+d_strchr (d_strchr.U):
+ This variable conditionally defines HAS_STRCHR if strchr() and
+ strrchr() are available for string searching.
+
+d_strcoll (d_strcoll.U):
+ This variable conditionally defines HAS_STRCOLL if strcoll() is
+ available to compare strings using collating information.
+
+d_strctcpy (d_strctcpy.U):
+ This variable conditionally defines the USE_STRUCT_COPY symbol, which
+ indicates to the C program that this C compiler knows how to copy
+ structures.
+
+d_strerrm (d_strerror.U):
+ This variable holds what Strerrr is defined as to translate an error
+ code condition into an error message string. It could be 'strerror'
+ or a more complex macro emulating strrror with sys_errlist[], or the
+ "unknown" string when both strerror and sys_errlist are missing.
+
+d_strerror (d_strerror.U):
+ This variable conditionally defines HAS_STRERROR if strerror() is
+ available to translate error numbers to strings.
+
+d_strtod (d_strtod.U):
+ This variable conditionally defines the HAS_STRTOD symbol, which
+ indicates to the C program that the strtod() routine is available
+ to provide better numeric string conversion than atof().
+
+d_strtol (d_strtol.U):
+ This variable conditionally defines the HAS_STRTOL symbol, which
+ indicates to the C program that the strtol() routine is available
+ to provide better numeric string conversion than atoi() and friends.
+
+d_strtold (d_strtold.U):
+ This variable conditionally defines the HAS_STRTOLD symbol, which
+ indicates to the C program that the strtold() routine is available.
+
+d_strtoll (d_strtoll.U):
+ This variable conditionally defines the HAS_STRTOLL symbol, which
+ indicates to the C program that the strtoll() routine is available.
+
+d_strtoul (d_strtoul.U):
+ This variable conditionally defines the HAS_STRTOUL symbol, which
+ indicates to the C program that the strtoul() routine is available
+ to provide conversion of strings to unsigned long.
+
+d_strtoull (d_strtoull.U):
+ This variable conditionally defines the HAS_STRTOULL symbol, which
+ indicates to the C program that the strtoull() routine is available.
+
+d_strtouq (d_strtouq.U):
+ This variable conditionally defines the HAS_STRTOUQ symbol, which
+ indicates to the C program that the strtouq() routine is available.
+
+d_strxfrm (d_strxfrm.U):
+ This variable conditionally defines HAS_STRXFRM if strxfrm() is
+ available to transform strings.
+
+d_suidsafe (d_dosuid.U):
+ This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
+ if setuid scripts can be secure. This test looks in /dev/fd/.
+
+d_symlink (d_symlink.U):
+ This variable conditionally defines the HAS_SYMLINK symbol, which
+ indicates to the C program that the symlink() routine is available
+ to create symbolic links.
+
+d_syscall (d_syscall.U):
+ This variable conditionally defines HAS_SYSCALL if syscall() is
+ available call arbitrary system calls.
+
+d_sysconf (d_sysconf.U):
+ This variable conditionally defines the HAS_SYSCONF symbol, which
+ indicates to the C program that the sysconf() routine is available
+ to determine system related limits and options.
+
+d_sysernlst (d_strerror.U):
+ This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
+ is available to translate error numbers to the symbolic name.
+
+d_syserrlst (d_strerror.U):
+ This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
+ available to translate error numbers to strings.
+
+d_system (d_system.U):
+ This variable conditionally defines HAS_SYSTEM if system() is
+ available to issue a shell command.
+
+d_tcgetpgrp (d_tcgtpgrp.U):
+ This variable conditionally defines the HAS_TCGETPGRP symbol, which
+ indicates to the C program that the tcgetpgrp() routine is available.
+ to get foreground process group ID.
+
+d_tcsetpgrp (d_tcstpgrp.U):
+ This variable conditionally defines the HAS_TCSETPGRP symbol, which
+ indicates to the C program that the tcsetpgrp() routine is available
+ to set foreground process group ID.
+
+d_telldir (d_readdir.U):
+ This variable conditionally defines HAS_TELLDIR if telldir() is
+ available.
+
+d_telldirproto (d_telldirproto.U):
+ This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
+ which indicates to the C program that the system provides
+ a prototype for the telldir() function. Otherwise, it is
+ up to the program to supply one.
+
+d_time (d_time.U):
+ This variable conditionally defines the HAS_TIME symbol, which indicates
+ that the time() routine exists. The time() routine is normaly
+ provided on UNIX systems.
+
+d_times (d_times.U):
+ This variable conditionally defines the HAS_TIMES symbol, which indicates
+ that the times() routine exists. The times() routine is normaly
+ provided on UNIX systems. You may have to include <sys/times.h>.
+
+d_truncate (d_truncate.U):
+ This variable conditionally defines HAS_TRUNCATE if truncate() is
+ available to truncate files.
+
+d_tzname (d_tzname.U):
+ This variable conditionally defines HAS_TZNAME if tzname[] is
+ available to access timezone names.
+
+d_umask (d_umask.U):
+ This variable conditionally defines the HAS_UMASK symbol, which
+ indicates to the C program that the umask() routine is available.
+ to set and get the value of the file creation mask.
+
+d_uname (d_gethname.U):
+ This variable conditionally defines the HAS_UNAME symbol, which
+ indicates to the C program that the uname() routine may be
+ used to derive the host name.
+
+d_union_semun (d_union_semun.U):
+ This variable conditionally defines HAS_UNION_SEMUN if the
+ union semun is defined by including <sys/sem.h>.
+
+d_ustat (d_ustat.U):
+ This variable conditionally defines HAS_USTAT if ustat() is
+ available to query file system statistics by dev_t.
+
+d_vendorarch (vendorarch.U):
+ This variable conditionally defined PERL_VENDORARCH.
+
+d_vendorbin (vendorbin.U):
+ This variable conditionally defines PERL_VENDORBIN.
+
+d_vendorlib (vendorlib.U):
+ This variable conditionally defines PERL_VENDORLIB.
+
+d_vfork (d_vfork.U):
+ This variable conditionally defines the HAS_VFORK symbol, which
+ indicates the vfork() routine is available.
+
+d_void_closedir (d_closedir.U):
+ This variable conditionally defines VOID_CLOSEDIR if closedir()
+ does not return a value.
+
+d_voidsig (d_voidsig.U):
+ This variable conditionally defines VOIDSIG if this system
+ declares "void (*signal(...))()" in signal.h. The old way was to
+ declare it as "int (*signal(...))()".
+
+d_voidtty (i_sysioctl.U):
+ This variable conditionally defines USE_IOCNOTTY to indicate that the
+ ioctl() call with TIOCNOTTY should be used to void tty association.
+ Otherwise (on USG probably), it is enough to close the standard file
+ decriptors and do a setpgrp().
+
+d_volatile (d_volatile.U):
+ This variable conditionally defines the HASVOLATILE symbol, which
+ indicates to the C program that this C compiler knows about the
+ volatile declaration.
+
+d_vprintf (d_vprintf.U):
+ This variable conditionally defines the HAS_VPRINTF symbol, which
+ indicates to the C program that the vprintf() routine is available
+ to printf with a pointer to an argument list.
+
+d_wait4 (d_wait4.U):
+ This variable conditionally defines the HAS_WAIT4 symbol, which
+ indicates the wait4() routine is available.
+
+d_waitpid (d_waitpid.U):
+ This variable conditionally defines HAS_WAITPID if waitpid() is
+ available to wait for child process.
+
+d_wcstombs (d_wcstombs.U):
+ This variable conditionally defines the HAS_WCSTOMBS symbol, which
+ indicates to the C program that the wcstombs() routine is available
+ to convert wide character strings to multibyte strings.
+
+d_wctomb (d_wctomb.U):
+ This variable conditionally defines the HAS_WCTOMB symbol, which
+ indicates to the C program that the wctomb() routine is available
+ to convert a wide character to a multibyte.
+
+d_xenix (Guess.U):
+ This variable conditionally defines the symbol XENIX, which alerts
+ the C program that it runs under Xenix.
+
+date (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the date program. After Configure runs,
+ the value is reset to a plain "date" and is not useful.
+
+db_hashtype (i_db.U):
+ This variable contains the type of the hash structure element
+ in the <db.h> header file. In older versions of DB, it was
+ int, while in newer ones it is u_int32_t.
+
+db_prefixtype (i_db.U):
+ This variable contains the type of the prefix structure element
+ in the <db.h> header file. In older versions of DB, it was
+ int, while in newer ones it is size_t.
+
+defvoidused (voidflags.U):
+ This variable contains the default value of the VOIDUSED symbol (15).
+
+direntrytype (i_dirent.U):
+ This symbol is set to 'struct direct' or 'struct dirent' depending on
+ whether dirent is available or not. You should use this pseudo type to
+ portably declare your directory entries.
+
+dlext (dlext.U):
+ This variable contains the extension that is to be used for the
+ dynamically loaded modules that perl generaties.
+
+dlsrc (dlsrc.U):
+ This variable contains the name of the dynamic loading file that
+ will be used with the package.
+
+doublesize (doublesize.U):
+ This variable contains the value of the DOUBLESIZE symbol, which
+ indicates to the C program how many bytes there are in a double.
+
+drand01 (randfunc.U):
+ Indicates the macro to be used to generate normalized
+ random numbers. Uses randfunc, often divided by
+ (double) (((unsigned long) 1 << randbits)) in order to
+ normalize the result.
+ In C programs, the macro 'Drand01' is mapped to drand01.
+
+dynamic_ext (Extensions.U):
+ This variable holds a list of XS extension files we want to
+ link dynamically into the package. It is used by Makefile.
+
+eagain (nblock_io.U):
+ This variable bears the symbolic errno code set by read() when no
+ data is present on the file and non-blocking I/O was enabled (otherwise,
+ read() blocks naturally).
+
+ebcdic (ebcdic.U):
+ This variable conditionally defines EBCDIC if this
+ system uses EBCDIC encoding. Among other things, this
+ means that the character ranges are not contiguous.
+ See trnl.U
+
+echo (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the echo program. After Configure runs,
+ the value is reset to a plain "echo" and is not useful.
+
+egrep (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the egrep program. After Configure runs,
+ the value is reset to a plain "egrep" and is not useful.
+
+emacs (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+eunicefix (Init.U):
+ When running under Eunice this variable contains a command which will
+ convert a shell script to the proper form of text file for it to be
+ executable by the shell. On other systems it is a no-op.
+
+exe_ext (Unix.U):
+ This is an old synonym for _exe.
+
+expr (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the expr program. After Configure runs,
+ the value is reset to a plain "expr" and is not useful.
+
+extensions (Extensions.U):
+ This variable holds a list of all extension files (both XS and
+ non-xs linked into the package. It is propagated to Config.pm
+ and is typically used to test whether a particular extesion
+ is available.
+
+fflushall (fflushall.U):
+ This symbol, if defined, tells that to flush
+ all pending stdio output one must loop through all
+ the stdio file handles stored in an array and fflush them.
+ Note that if fflushNULL is defined, fflushall will not
+ even be probed for and will be left undefined.
+
+fflushNULL (fflushall.U):
+ This symbol, if defined, tells that fflush(NULL) does flush
+ all pending stdio output.
+
+find (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+firstmakefile (Unix.U):
+ This variable defines the first file searched by make. On unix,
+ it is makefile (then Makefile). On case-insensitive systems,
+ it might be something else. This is only used to deal with
+ convoluted make depend tricks.
+
+flex (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+fpossize (fpossize.U):
+ This variable contains the size of a fpostype in bytes.
+
+fpostype (fpostype.U):
+ This variable defines Fpos_t to be something like fpos_t, long,
+ uint, or whatever type is used to declare file positions in libc.
+
+freetype (mallocsrc.U):
+ This variable contains the return type of free(). It is usually
+ void, but occasionally int.
+
+full_ar (Loc_ar.U):
+ This variable contains the full pathname to 'ar', whether or
+ not the user has specified 'portability'. This is only used
+ in the Makefile.SH.
+
+full_csh (d_csh.U):
+ This variable contains the full pathname to 'csh', whether or
+ not the user has specified 'portability'. This is only used
+ in the compiled C program, and we assume that all systems which
+ can share this executable will have the same full pathname to
+ 'csh.'
+
+full_sed (Loc_sed.U):
+ This variable contains the full pathname to 'sed', whether or
+ not the user has specified 'portability'. This is only used
+ in the compiled C program, and we assume that all systems which
+ can share this executable will have the same full pathname to
+ 'sed.'
+
+gccosandvers (gccvers.U):
+ If GNU cc (gcc) is used, this variable the operating system and
+ version used to compile the gcc. It is set to '' if not gcc,
+ or if nothing useful can be parsed as the os version.
+
+gccversion (gccvers.U):
+ If GNU cc (gcc) is used, this variable holds '1' or '2' to
+ indicate whether the compiler is version 1 or 2. This is used in
+ setting some of the default cflags. It is set to '' if not gcc.
+
+gidformat (gidf.U):
+ This variable contains the format string used for printing a Gid_t.
+
+gidsign (gidsign.U):
+ This variable contains the signedness of a gidtype.
+ 1 for unsigned, -1 for signed.
+
+gidsize (gidsize.U):
+ This variable contains the size of a gidtype in bytes.
+
+gidtype (gidtype.U):
+ This variable defines Gid_t to be something like gid_t, int,
+ ushort, or whatever type is used to declare the return type
+ of getgid(). Typically, it is the type of group ids in the kernel.
+
+glibpth (libpth.U):
+ This variable holds the general path (space-separated) used to
+ find libraries. It may contain directories that do not exist on
+ this platform, libpth is the cleaned-up version.
+
+grep (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the grep program. After Configure runs,
+ the value is reset to a plain "grep" and is not useful.
+
+groupcat (nis.U):
+ This variable contains a command that produces the text of the
+ /etc/group file. This is normally "cat /etc/group", but can be
+ "ypcat group" when NIS is used.
+ On some systems, such as os390, there may be no equivalent
+ command, in which case this variable is unset.
+
+groupstype (groupstype.U):
+ This variable defines Groups_t to be something like gid_t, int,
+ ushort, or whatever type is used for the second argument to
+ getgroups() and setgroups(). Usually, this is the same as
+ gidtype (gid_t), but sometimes it isn't.
+
+gzip (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the gzip program. After Configure runs,
+ the value is reset to a plain "gzip" and is not useful.
+
+h_fcntl (h_fcntl.U):
+ This is variable gets set in various places to tell i_fcntl that
+ <fcntl.h> should be included.
+
+h_sysfile (h_sysfile.U):
+ This is variable gets set in various places to tell i_sys_file that
+ <sys/file.h> should be included.
+
+hint (Oldconfig.U):
+ Gives the type of hints used for previous answers. May be one of
+ "default", "recommended" or "previous".
+
+hostcat (nis.U):
+ This variable contains a command that produces the text of the
+ /etc/hosts file. This is normally "cat /etc/hosts", but can be
+ "ypcat hosts" when NIS is used.
+ On some systems, such as os390, there may be no equivalent
+ command, in which case this variable is unset.
+
+i16size (perlxv.U):
+ This variable is the size of an I16 in bytes.
+
+i16type (perlxv.U):
+ This variable contains the C type used for Perl's I16.
+
+i32size (perlxv.U):
+ This variable is the size of an I32 in bytes.
+
+i32type (perlxv.U):
+ This variable contains the C type used for Perl's I32.
+
+i64size (perlxv.U):
+ This variable is the size of an I64 in bytes.
+
+i64type (perlxv.U):
+ This variable contains the C type used for Perl's I64.
+
+i8size (perlxv.U):
+ This variable is the size of an I8 in bytes.
+
+i8type (perlxv.U):
+ This variable contains the C type used for Perl's I8.
+
+i_arpainet (i_arpainet.U):
+ This variable conditionally defines the I_ARPA_INET symbol,
+ and indicates whether a C program should include <arpa/inet.h>.
+
+i_bsdioctl (i_sysioctl.U):
+ This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
+ indicates to the C program that <sys/bsdioctl.h> exists and should
+ be included.
+
+i_db (i_db.U):
+ This variable conditionally defines the I_DB symbol, and indicates
+ whether a C program may include Berkeley's DB include file <db.h>.
+
+i_dbm (i_dbm.U):
+ This variable conditionally defines the I_DBM symbol, which
+ indicates to the C program that <dbm.h> exists and should
+ be included.
+
+i_dirent (i_dirent.U):
+ This variable conditionally defines I_DIRENT, which indicates
+ to the C program that it should include <dirent.h>.
+
+i_dld (i_dld.U):
+ This variable conditionally defines the I_DLD symbol, which
+ indicates to the C program that <dld.h> (GNU dynamic loading)
+ exists and should be included.
+
+i_dlfcn (i_dlfcn.U):
+ This variable conditionally defines the I_DLFCN symbol, which
+ indicates to the C program that <dlfcn.h> exists and should
+ be included.
+
+i_fcntl (i_fcntl.U):
+ This variable controls the value of I_FCNTL (which tells
+ the C program to include <fcntl.h>).
+
+i_float (i_float.U):
+ This variable conditionally defines the I_FLOAT symbol, and indicates
+ whether a C program may include <float.h> to get symbols like DBL_MAX
+ or DBL_MIN, i.e. machine dependent floating point values.
+
+i_gdbm (i_gdbm.U):
+ This variable conditionally defines the I_GDBM symbol, which
+ indicates to the C program that <gdbm.h> exists and should
+ be included.
+
+i_grp (i_grp.U):
+ This variable conditionally defines the I_GRP symbol, and indicates
+ whether a C program should include <grp.h>.
+
+i_iconv (i_iconv.U):
+ This variable conditionally defines the I_ICONV symbol, and indicates
+ whether a C program should include <iconv.h>.
+
+i_ieeefp (i_ieeefp.U):
+ This variable conditionally defines the I_IEEEFP symbol, and indicates
+ whether a C program should include <ieeefp.h>.
+
+i_inttypes (i_inttypes.U):
+ This variable conditionally defines the I_INTTYPES symbol,
+ and indicates whether a C program should include <inttypes.h>.
+
+i_libutil (i_libutil.U):
+ This variable conditionally defines the I_LIBUTIL symbol, and indicates
+ whether a C program should include <libutil.h>.
+
+i_limits (i_limits.U):
+ This variable conditionally defines the I_LIMITS symbol, and indicates
+ whether a C program may include <limits.h> to get symbols like WORD_BIT
+ and friends.
+
+i_locale (i_locale.U):
+ This variable conditionally defines the I_LOCALE symbol,
+ and indicates whether a C program should include <locale.h>.
+
+i_machcthr (i_machcthr.U):
+ This variable conditionally defines the I_MACH_CTHREADS symbol,
+ and indicates whether a C program should include <mach/cthreads.h>.
+
+i_malloc (i_malloc.U):
+ This variable conditionally defines the I_MALLOC symbol, and indicates
+ whether a C program should include <malloc.h>.
+
+i_math (i_math.U):
+ This variable conditionally defines the I_MATH symbol, and indicates
+ whether a C program may include <math.h>.
+
+i_memory (i_memory.U):
+ This variable conditionally defines the I_MEMORY symbol, and indicates
+ whether a C program should include <memory.h>.
+
+i_mntent (i_mntent.U):
+ This variable conditionally defines the I_MNTENT symbol, and indicates
+ whether a C program should include <mntent.h>.
+
+i_ndbm (i_ndbm.U):
+ This variable conditionally defines the I_NDBM symbol, which
+ indicates to the C program that <ndbm.h> exists and should
+ be included.
+
+i_netdb (i_netdb.U):
+ This variable conditionally defines the I_NETDB symbol, and indicates
+ whether a C program should include <netdb.h>.
+
+i_neterrno (i_neterrno.U):
+ This variable conditionally defines the I_NET_ERRNO symbol, which
+ indicates to the C program that <net/errno.h> exists and should
+ be included.
+
+i_netinettcp (i_netinettcp.U):
+ This variable conditionally defines the I_NETINET_TCP symbol,
+ and indicates whether a C program should include <netinet/tcp.h>.
+
+i_niin (i_niin.U):
+ This variable conditionally defines I_NETINET_IN, which indicates
+ to the C program that it should include <netinet/in.h>. Otherwise,
+ you may try <sys/in.h>.
+
+i_poll (i_poll.U):
+ This variable conditionally defines the I_POLL symbol, and indicates
+ whether a C program should include <poll.h>.
+
+i_prot (i_prot.U):
+ This variable conditionally defines the I_PROT symbol, and indicates
+ whether a C program should include <prot.h>.
+
+i_pthread (i_pthread.U):
+ This variable conditionally defines the I_PTHREAD symbol,
+ and indicates whether a C program should include <pthread.h>.
+
+i_pwd (i_pwd.U):
+ This variable conditionally defines I_PWD, which indicates
+ to the C program that it should include <pwd.h>.
+
+i_rpcsvcdbm (i_dbm.U):
+ This variable conditionally defines the I_RPCSVC_DBM symbol, which
+ indicates to the C program that <rpcsvc/dbm.h> exists and should
+ be included. Some System V systems might need this instead of <dbm.h>.
+
+i_sfio (i_sfio.U):
+ This variable conditionally defines the I_SFIO symbol,
+ and indicates whether a C program should include <sfio.h>.
+
+i_sgtty (i_termio.U):
+ This variable conditionally defines the I_SGTTY symbol, which
+ indicates to the C program that it should include <sgtty.h> rather
+ than <termio.h>.
+
+i_shadow (i_shadow.U):
+ This variable conditionally defines the I_SHADOW symbol, and indicates
+ whether a C program should include <shadow.h>.
+
+i_socks (i_socks.U):
+ This variable conditionally defines the I_SOCKS symbol, and indicates
+ whether a C program should include <socks.h>.
+
+i_stdarg (i_varhdr.U):
+ This variable conditionally defines the I_STDARG symbol, which
+ indicates to the C program that <stdarg.h> exists and should
+ be included.
+
+i_stddef (i_stddef.U):
+ This variable conditionally defines the I_STDDEF symbol, which
+ indicates to the C program that <stddef.h> exists and should
+ be included.
+
+i_stdlib (i_stdlib.U):
+ This variable conditionally defines the I_STDLIB symbol, which
+ indicates to the C program that <stdlib.h> exists and should
+ be included.
+
+i_string (i_string.U):
+ This variable conditionally defines the I_STRING symbol, which
+ indicates that <string.h> should be included rather than <strings.h>.
+
+i_sunmath (i_sunmath.U):
+ This variable conditionally defines the I_SUNMATH symbol, and indicates
+ whether a C program should include <sunmath.h>.
+
+i_sysaccess (i_sysaccess.U):
+ This variable conditionally defines the I_SYS_ACCESS symbol,
+ and indicates whether a C program should include <sys/access.h>.
+
+i_sysdir (i_sysdir.U):
+ This variable conditionally defines the I_SYS_DIR symbol, and indicates
+ whether a C program should include <sys/dir.h>.
+
+i_sysfile (i_sysfile.U):
+ This variable conditionally defines the I_SYS_FILE symbol, and indicates
+ whether a C program should include <sys/file.h> to get R_OK and friends.
+
+i_sysfilio (i_sysioctl.U):
+ This variable conditionally defines the I_SYS_FILIO symbol, which
+ indicates to the C program that <sys/filio.h> exists and should
+ be included in preference to <sys/ioctl.h>.
+
+i_sysin (i_niin.U):
+ This variable conditionally defines I_SYS_IN, which indicates
+ to the C program that it should include <sys/in.h> instead of
+ <netinet/in.h>.
+
+i_sysioctl (i_sysioctl.U):
+ This variable conditionally defines the I_SYS_IOCTL symbol, which
+ indicates to the C program that <sys/ioctl.h> exists and should
+ be included.
+
+i_syslog (i_syslog.U):
+ This variable conditionally defines the I_SYSLOG symbol,
+ and indicates whether a C program should include <syslog.h>.
+
+i_sysmman (i_sysmman.U):
+ This variable conditionally defines the I_SYS_MMAN symbol, and
+ indicates whether a C program should include <sys/mman.h>.
+
+i_sysmode (i_sysmode.U):
+ This variable conditionally defines the I_SYSMODE symbol,
+ and indicates whether a C program should include <sys/mode.h>.
+
+i_sysmount (i_sysmount.U):
+ This variable conditionally defines the I_SYSMOUNT symbol,
+ and indicates whether a C program should include <sys/mount.h>.
+
+i_sysndir (i_sysndir.U):
+ This variable conditionally defines the I_SYS_NDIR symbol, and indicates
+ whether a C program should include <sys/ndir.h>.
+
+i_sysparam (i_sysparam.U):
+ This variable conditionally defines the I_SYS_PARAM symbol, and indicates
+ whether a C program should include <sys/param.h>.
+
+i_sysresrc (i_sysresrc.U):
+ This variable conditionally defines the I_SYS_RESOURCE symbol,
+ and indicates whether a C program should include <sys/resource.h>.
+
+i_syssecrt (i_syssecrt.U):
+ This variable conditionally defines the I_SYS_SECURITY symbol,
+ and indicates whether a C program should include <sys/security.h>.
+
+i_sysselct (i_sysselct.U):
+ This variable conditionally defines I_SYS_SELECT, which indicates
+ to the C program that it should include <sys/select.h> in order to
+ get the definition of struct timeval.
+
+i_syssockio (i_sysioctl.U):
+ This variable conditionally defines I_SYS_SOCKIO to indicate to the
+ C program that socket ioctl codes may be found in <sys/sockio.h>
+ instead of <sys/ioctl.h>.
+
+i_sysstat (i_sysstat.U):
+ This variable conditionally defines the I_SYS_STAT symbol,
+ and indicates whether a C program should include <sys/stat.h>.
+
+i_sysstatfs (i_sysstatfs.U):
+ This variable conditionally defines the I_SYSSTATFS symbol,
+ and indicates whether a C program should include <sys/statfs.h>.
+
+i_sysstatvfs (i_sysstatvfs.U):
+ This variable conditionally defines the I_SYSSTATVFS symbol,
+ and indicates whether a C program should include <sys/statvfs.h>.
+
+i_systime (i_time.U):
+ This variable conditionally defines I_SYS_TIME, which indicates
+ to the C program that it should include <sys/time.h>.
+
+i_systimek (i_time.U):
+ This variable conditionally defines I_SYS_TIME_KERNEL, which
+ indicates to the C program that it should include <sys/time.h>
+ with KERNEL defined.
+
+i_systimes (i_systimes.U):
+ This variable conditionally defines the I_SYS_TIMES symbol, and indicates
+ whether a C program should include <sys/times.h>.
+
+i_systypes (i_systypes.U):
+ This variable conditionally defines the I_SYS_TYPES symbol,
+ and indicates whether a C program should include <sys/types.h>.
+
+i_sysuio (i_sysuio.U):
+ This variable conditionally defines the I_SYSUIO symbol, and indicates
+ whether a C program should include <sys/uio.h>.
+
+i_sysun (i_sysun.U):
+ This variable conditionally defines I_SYS_UN, which indicates
+ to the C program that it should include <sys/un.h> to get UNIX
+ domain socket definitions.
+
+i_sysutsname (i_sysutsname.U):
+ This variable conditionally defines the I_SYSUTSNAME symbol,
+ and indicates whether a C program should include <sys/utsname.h>.
+
+i_sysvfs (i_sysvfs.U):
+ This variable conditionally defines the I_SYSVFS symbol,
+ and indicates whether a C program should include <sys/vfs.h>.
+
+i_syswait (i_syswait.U):
+ This variable conditionally defines I_SYS_WAIT, which indicates
+ to the C program that it should include <sys/wait.h>.
+
+i_termio (i_termio.U):
+ This variable conditionally defines the I_TERMIO symbol, which
+ indicates to the C program that it should include <termio.h> rather
+ than <sgtty.h>.
+
+i_termios (i_termio.U):
+ This variable conditionally defines the I_TERMIOS symbol, which
+ indicates to the C program that the POSIX <termios.h> file is
+ to be included.
+
+i_time (i_time.U):
+ This variable conditionally defines I_TIME, which indicates
+ to the C program that it should include <time.h>.
+
+i_unistd (i_unistd.U):
+ This variable conditionally defines the I_UNISTD symbol, and indicates
+ whether a C program should include <unistd.h>.
+
+i_ustat (i_ustat.U):
+ This variable conditionally defines the I_USTAT symbol, and indicates
+ whether a C program should include <ustat.h>.
+
+i_utime (i_utime.U):
+ This variable conditionally defines the I_UTIME symbol, and indicates
+ whether a C program should include <utime.h>.
+
+i_values (i_values.U):
+ This variable conditionally defines the I_VALUES symbol, and indicates
+ whether a C program may include <values.h> to get symbols like MAXLONG
+ and friends.
+
+i_varargs (i_varhdr.U):
+ This variable conditionally defines I_VARARGS, which indicates
+ to the C program that it should include <varargs.h>.
+
+i_varhdr (i_varhdr.U):
+ Contains the name of the header to be included to get va_dcl definition.
+ Typically one of varargs.h or stdarg.h.
+
+i_vfork (i_vfork.U):
+ This variable conditionally defines the I_VFORK symbol, and indicates
+ whether a C program should include vfork.h.
+
+ignore_versioned_solibs (libs.U):
+ This variable should be non-empty if non-versioned shared
+ libraries (libfoo.so.x.y) are to be ignored (because they
+ cannot be linked against).
+
+inc_version_list (inc_version_list.U):
+ This variable specifies the list of subdirectories in over
+ which perl.c:incpush() and lib/lib.pm will automatically
+ search when adding directories to @INC. The elements in
+ the list are separated by spaces. This is only useful
+ if you have a perl library directory tree structured like the
+ default one. See INSTALL for how this works. The versioned
+ site_perl directory was introduced in 5.005, so that is the
+ lowest possible value.
+
+inc_version_list_init (inc_version_list.U):
+ This variable holds the same list as inc_version_list, but
+ each item is enclosed in double quotes and separated by commas,
+ suitable for use in the PERL_INC_VERSION_LIST initialization.
+
+incpath (usrinc.U):
+ This variable must preceed the normal include path to get hte
+ right one, as in "$incpath/usr/include" or "$incpath/usr/lib".
+ Value can be "" or "/bsd43" on mips.
+
+inews (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+installarchlib (archlib.U):
+ This variable is really the same as archlibexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+installbin (bin.U):
+ This variable is the same as binexp unless AFS is running in which case
+ the user is explicitely prompted for it. This variable should always
+ be used in your makefiles for maximum portability.
+
+installman1dir (man1dir.U):
+ This variable is really the same as man1direxp, unless you are using
+ AFS in which case it points to the read/write location whereas
+ man1direxp only points to the read-only access location. For extra
+ portability, you should only use this variable within your makefiles.
+
+installman3dir (man3dir.U):
+ This variable is really the same as man3direxp, unless you are using
+ AFS in which case it points to the read/write location whereas
+ man3direxp only points to the read-only access location. For extra
+ portability, you should only use this variable within your makefiles.
+
+installprefix (installprefix.U):
+ This variable holds the name of the directory below which
+ "make install" will install the package. For most users, this
+ is the same as prefix. However, it is useful for
+ installing the software into a different (usually temporary)
+ location after which it can be bundled up and moved somehow
+ to the final location specified by prefix.
+
+installprefixexp (installprefix.U):
+ This variable holds the full absolute path of installprefix
+ with all ~-expansion done.
+
+installprivlib (privlib.U):
+ This variable is really the same as privlibexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+installscript (scriptdir.U):
+ This variable is usually the same as scriptdirexp, unless you are on
+ a system running AFS, in which case they may differ slightly. You
+ should always use this variable within your makefiles for portability.
+
+installsitearch (sitearch.U):
+ This variable is really the same as sitearchexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+installsitebin (sitebin.U):
+ This variable is usually the same as sitebinexp, unless you are on
+ a system running AFS, in which case they may differ slightly. You
+ should always use this variable within your makefiles for portability.
+
+installsitelib (sitelib.U):
+ This variable is really the same as sitelibexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+installstyle (installstyle.U):
+ This variable describes the "style" of the perl installation.
+ This is intended to be useful for tools that need to
+ manipulate entire perl distributions. Perl itself doesn't use
+ this to find its libraries -- the library directories are
+ stored directly in Config.pm. Currently, there are only two
+ styles: "lib" and "lib/perl5". The default library locations
+ (e.g. privlib, sitelib) are either $prefix/lib or
+ $prefix/lib/perl5. The former is useful if $prefix is a
+ directory dedicated to perl (e.g. /opt/perl), while the latter
+ is useful if $prefix is shared by many packages, e.g. if
+ $prefix=/usr/local.
+ This may later be extended to include other information, so
+ be careful with pattern-matching on the results.
+ For compatibility with perl5.005 and earlier, the default
+ setting is based on whether or not $prefix contains the string
+ "perl".
+
+installusrbinperl (instubperl.U):
+ This variable tells whether Perl should be installed also as
+ /usr/bin/perl in addition to
+ $installbin/perl
+
+installvendorarch (vendorarch.U):
+ This variable is really the same as vendorarchexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+installvendorbin (vendorbin.U):
+ This variable is really the same as vendorbinexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+installvendorlib (vendorlib.U):
+ This variable is really the same as vendorlibexp but may differ on
+ those systems using AFS. For extra portability, only this variable
+ should be used in makefiles.
+
+intsize (intsize.U):
+ This variable contains the value of the INTSIZE symbol, which
+ indicates to the C program how many bytes there are in an int.
+
+ivdformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl IV as a signed decimal integer.
+
+ivsize (perlxv.U):
+ This variable is the size of an IV in bytes.
+
+ivtype (perlxv.U):
+ This variable contains the C type used for Perl's IV.
+
+known_extensions (Extensions.U):
+ This variable holds a list of all XS extensions included in
+ the package.
+
+ksh (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+ld (dlsrc.U):
+ This variable indicates the program to be used to link
+ libraries for dynamic loading. On some systems, it is 'ld'.
+ On ELF systems, it should be $cc. Mostly, we'll try to respect
+ the hint file setting.
+
+lddlflags (dlsrc.U):
+ This variable contains any special flags that might need to be
+ passed to $ld to create a shared library suitable for dynamic
+ loading. It is up to the makefile to use it. For hpux, it
+ should be '-b'. For sunos 4.1, it is empty.
+
+ldflags (ccflags.U):
+ This variable contains any additional C loader flags desired by
+ the user. It is up to the Makefile to use this.
+
+ldflags_uselargefiles (uselfs.U):
+ This variable contains the loader flags needed by large file builds
+ and added to ldflags by hints files.
+
+ldlibpthname (libperl.U):
+ This variable holds the name of the shared library
+ search path, often LD_LIBRARY_PATH. To get an empty
+ string, the hints file must set this to 'none'.
+
+less (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the less program. After Configure runs,
+ the value is reset to a plain "less" and is not useful.
+
+lib_ext (Unix.U):
+ This is an old synonym for _a.
+
+libc (libc.U):
+ This variable contains the location of the C library.
+
+libperl (libperl.U):
+ The perl executable is obtained by linking perlmain.c with
+ libperl, any static extensions (usually just DynaLoader),
+ and any other libraries needed on this system. libperl
+ is usually libperl.a, but can also be libperl.so.xxx if
+ the user wishes to build a perl executable with a shared
+ library.
+
+libpth (libpth.U):
+ This variable holds the general path (space-separated) used to find
+ libraries. It is intended to be used by other units.
+
+libs (libs.U):
+ This variable holds the additional libraries we want to use.
+ It is up to the Makefile to deal with it.
+
+libsdirs (libs.U):
+ This variable holds the directory names aka dirnames of the libraries
+ we found and accepted, duplicates are removed.
+
+libsfiles (libs.U):
+ This variable holds the filenames aka basenames of the libraries
+ we found and accepted.
+
+libsfound (libs.U):
+ This variable holds the full pathnames of the libraries
+ we found and accepted.
+
+libspath (libs.U):
+ This variable holds the directory names probed for libraries.
+
+libswanted (Myinit.U):
+ This variable holds a list of all the libraries we want to
+ search. The order is chosen to pick up the c library
+ ahead of ucb or bsd libraries for SVR4.
+
+libswanted_uselargefiles (uselfs.U):
+ This variable contains the libraries needed by large file builds
+ and added to ldflags by hints files. It is a space separated list
+ of the library names without the "lib" prefix or any suffix, just
+ like libswanted..
+
+line (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+lint (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+lkflags (ccflags.U):
+ This variable contains any additional C partial linker flags desired by
+ the user. It is up to the Makefile to use this.
+
+ln (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the ln program. After Configure runs,
+ the value is reset to a plain "ln" and is not useful.
+
+lns (lns.U):
+ This variable holds the name of the command to make
+ symbolic links (if they are supported). It can be used
+ in the Makefile. It is either 'ln -s' or 'ln'
+
+locincpth (ccflags.U):
+ This variable contains a list of additional directories to be
+ searched by the compiler. The appropriate '-I' directives will
+ be added to ccflags. This is intended to simplify setting
+ local directories from the Configure command line.
+ It's not much, but it parallels the loclibpth stuff in libpth.U.
+
+loclibpth (libpth.U):
+ This variable holds the paths (space-separated) used to find local
+ libraries. It is prepended to libpth, and is intended to be easily
+ set from the command line.
+
+longdblsize (d_longdbl.U):
+ This variable contains the value of the LONG_DOUBLESIZE symbol, which
+ indicates to the C program how many bytes there are in a long double,
+ if this system supports long doubles.
+
+longlongsize (d_longlong.U):
+ This variable contains the value of the LONGLONGSIZE symbol, which
+ indicates to the C program how many bytes there are in a long long,
+ if this system supports long long.
+
+longsize (intsize.U):
+ This variable contains the value of the LONGSIZE symbol, which
+ indicates to the C program how many bytes there are in a long.
+
+lp (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+lpr (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+ls (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the ls program. After Configure runs,
+ the value is reset to a plain "ls" and is not useful.
+
+lseeksize (lseektype.U):
+ This variable defines lseektype to be something like off_t, long,
+ or whatever type is used to declare lseek offset's type in the
+ kernel (which also appears to be lseek's return type).
+
+lseektype (lseektype.U):
+ This variable defines lseektype to be something like off_t, long,
+ or whatever type is used to declare lseek offset's type in the
+ kernel (which also appears to be lseek's return type).
+
+mail (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+mailx (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+make (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the make program. After Configure runs,
+ the value is reset to a plain "make" and is not useful.
+
+make_set_make (make.U):
+ Some versions of 'make' set the variable MAKE. Others do not.
+ This variable contains the string to be included in Makefile.SH
+ so that MAKE is set if needed, and not if not needed.
+ Possible values are:
+ make_set_make='#' # If your make program handles this for you,
+ make_set_make="MAKE=$make" # if it doesn't.
+ I used a comment character so that we can distinguish a
+ 'set' value (from a previous config.sh or Configure '-D' option)
+ from an uncomputed value.
+
+mallocobj (mallocsrc.U):
+ This variable contains the name of the malloc.o that this package
+ generates, if that malloc.o is preferred over the system malloc.
+ Otherwise the value is null. This variable is intended for generating
+ Makefiles. See mallocsrc.
+
+mallocsrc (mallocsrc.U):
+ This variable contains the name of the malloc.c that comes with
+ the package, if that malloc.c is preferred over the system malloc.
+ Otherwise the value is null. This variable is intended for generating
+ Makefiles.
+
+malloctype (mallocsrc.U):
+ This variable contains the kind of ptr returned by malloc and realloc.
+
+man1dir (man1dir.U):
+ This variable contains the name of the directory in which manual
+ source pages are to be put. It is the responsibility of the
+ Makefile.SH to get the value of this into the proper command.
+ You must be prepared to do the ~name expansion yourself.
+
+man1direxp (man1dir.U):
+ This variable is the same as the man1dir variable, but is filename
+ expanded at configuration time, for convenient use in makefiles.
+
+man1ext (man1dir.U):
+ This variable contains the extension that the manual page should
+ have: one of 'n', 'l', or '1'. The Makefile must supply the '.'.
+ See man1dir.
+
+man3dir (man3dir.U):
+ This variable contains the name of the directory in which manual
+ source pages are to be put. It is the responsibility of the
+ Makefile.SH to get the value of this into the proper command.
+ You must be prepared to do the ~name expansion yourself.
+
+man3direxp (man3dir.U):
+ This variable is the same as the man3dir variable, but is filename
+ expanded at configuration time, for convenient use in makefiles.
+
+man3ext (man3dir.U):
+ This variable contains the extension that the manual page should
+ have: one of 'n', 'l', or '3'. The Makefile must supply the '.'.
+ See man3dir.
+
+Mcc (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the Mcc program. After Configure runs,
+ the value is reset to a plain "Mcc" and is not useful.
+
+mips_type (usrinc.U):
+ This variable holds the environment type for the mips system.
+ Possible values are "BSD 4.3" and "System V".
+
+mkdir (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the mkdir program. After Configure runs,
+ the value is reset to a plain "mkdir" and is not useful.
+
+mmaptype (d_mmap.U):
+ This symbol contains the type of pointer returned by mmap()
+ (and simultaneously the type of the first argument).
+ It can be 'void *' or 'caddr_t'.
+
+modetype (modetype.U):
+ This variable defines modetype to be something like mode_t,
+ int, unsigned short, or whatever type is used to declare file
+ modes for system calls.
+
+more (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the more program. After Configure runs,
+ the value is reset to a plain "more" and is not useful.
+
+multiarch (multiarch.U):
+ This variable conditionally defines the MULTIARCH symbol
+ which signifies the presence of multiplatform files.
+ This is normally set by hints files.
+
+mv (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+myarchname (archname.U):
+ This variable holds the architecture name computed by Configure in
+ a previous run. It is not intended to be perused by any user and
+ should never be set in a hint file.
+
+mydomain (myhostname.U):
+ This variable contains the eventual value of the MYDOMAIN symbol,
+ which is the domain of the host the program is going to run on.
+ The domain must be appended to myhostname to form a complete host name.
+ The dot comes with mydomain, and need not be supplied by the program.
+
+myhostname (myhostname.U):
+ This variable contains the eventual value of the MYHOSTNAME symbol,
+ which is the name of the host the program is going to run on.
+ The domain is not kept with hostname, but must be gotten from mydomain.
+ The dot comes with mydomain, and need not be supplied by the program.
+
+myuname (Oldconfig.U):
+ The output of 'uname -a' if available, otherwise the hostname. On Xenix,
+ pseudo variables assignments in the output are stripped, thank you. The
+ whole thing is then lower-cased.
+
+n (n.U):
+ This variable contains the '-n' flag if that is what causes the echo
+ command to suppress newline. Otherwise it is null. Correct usage is
+ $echo $n "prompt for a question: $c".
+
+netdb_hlen_type (netdbtype.U):
+ This variable holds the type used for the 2nd argument to
+ gethostbyaddr(). Usually, this is int or size_t or unsigned.
+ This is only useful if you have gethostbyaddr(), naturally.
+
+netdb_host_type (netdbtype.U):
+ This variable holds the type used for the 1st argument to
+ gethostbyaddr(). Usually, this is char * or void *, possibly
+ with or without a const prefix.
+ This is only useful if you have gethostbyaddr(), naturally.
+
+netdb_name_type (netdbtype.U):
+ This variable holds the type used for the argument to
+ gethostbyname(). Usually, this is char * or const char *.
+ This is only useful if you have gethostbyname(), naturally.
+
+netdb_net_type (netdbtype.U):
+ This variable holds the type used for the 1st argument to
+ getnetbyaddr(). Usually, this is int or long.
+ This is only useful if you have getnetbyaddr(), naturally.
+
+nm (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the nm program. After Configure runs,
+ the value is reset to a plain "nm" and is not useful.
+
+nm_opt (usenm.U):
+ This variable holds the options that may be necessary for nm.
+
+nm_so_opt (usenm.U):
+ This variable holds the options that may be necessary for nm
+ to work on a shared library but that can not be used on an
+ archive library. Currently, this is only used by Linux, where
+ nm --dynamic is *required* to get symbols from an ELF library which
+ has been stripped, but nm --dynamic is *fatal* on an archive library.
+ Maybe Linux should just always set usenm=false.
+
+nonxs_ext (Extensions.U):
+ This variable holds a list of all non-xs extensions included
+ in the package. All of them will be built.
+
+nroff (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the nroff program. After Configure runs,
+ the value is reset to a plain "nroff" and is not useful.
+
+nveformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl NV using %e-ish floating point format.
+
+nvEUformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl NV using %E-ish floating point format.
+
+nvfformat (perlxvf.U):
+ This variable confains the format string used for printing
+ a Perl NV using %f-ish floating point format.
+
+nvFUformat (perlxvf.U):
+ This variable confains the format string used for printing
+ a Perl NV using %F-ish floating point format.
+
+nvgformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl NV using %g-ish floating point format.
+
+nvGUformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl NV using %G-ish floating point format.
+
+nvsize (perlxv.U):
+ This variable is the size of an NV in bytes.
+
+nvtype (perlxv.U):
+ This variable contains the C type used for Perl's NV.
+
+o_nonblock (nblock_io.U):
+ This variable bears the symbol value to be used during open() or fcntl()
+ to turn on non-blocking I/O for a file descriptor. If you wish to switch
+ between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
+ but that is only supported by some devices.
+
+obj_ext (Unix.U):
+ This is an old synonym for _o.
+
+old_pthread_create_joinable (d_pthrattrj.U):
+ This variable defines the constant to use for creating joinable
+ (aka undetached) pthreads. Unused if pthread.h defines
+ PTHREAD_CREATE_JOINABLE. If used, possible values are
+ PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
+
+optimize (ccflags.U):
+ This variable contains any optimizer/debugger flag that should be used.
+ It is up to the Makefile to use it.
+
+orderlib (orderlib.U):
+ This variable is "true" if the components of libraries must be ordered
+ (with `lorder $* | tsort`) before placing them in an archive. Set to
+ "false" if ranlib or ar can generate random libraries.
+
+osname (Oldconfig.U):
+ This variable contains the operating system name (e.g. sunos,
+ solaris, hpux, etc.). It can be useful later on for setting
+ defaults. Any spaces are replaced with underscores. It is set
+ to a null string if we can't figure it out.
+
+osvers (Oldconfig.U):
+ This variable contains the operating system version (e.g.
+ 4.1.3, 5.2, etc.). It is primarily used for helping select
+ an appropriate hints file, but might be useful elsewhere for
+ setting defaults. It is set to '' if we can't figure it out.
+ We try to be flexible about how much of the version number
+ to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
+ same for this package, hints files might just be os_4.0 or
+ os_4.1, etc., not keeping separate files for each little release.
+
+otherlibdirs (otherlibdirs.U):
+ This variable contains a colon-separated set of paths for the perl
+ binary to search for additional library files or modules.
+ These directories will be tacked to the end of @INC.
+ Perl will automatically search below each path for version-
+ and architecture-specific directories. See inc_version_list
+ for more details.
+ A value of ' ' means 'none' and is used to preserve this value
+ for the next run through Configure.
+
+package (package.U):
+ This variable contains the name of the package being constructed.
+ It is primarily intended for the use of later Configure units.
+
+pager (pager.U):
+ This variable contains the name of the preferred pager on the system.
+ Usual values are (the full pathnames of) more, less, pg, or cat.
+
+passcat (nis.U):
+ This variable contains a command that produces the text of the
+ /etc/passwd file. This is normally "cat /etc/passwd", but can be
+ "ypcat passwd" when NIS is used.
+ On some systems, such as os390, there may be no equivalent
+ command, in which case this variable is unset.
+
+patchlevel (patchlevel.U):
+ The patchlevel level of this package.
+ The value of patchlevel comes from the patchlevel.h file.
+ In a version number such as 5.6.1, this is the "6".
+ In patchlevel.h, this is referred to as "PERL_VERSION".
+
+path_sep (Unix.U):
+ This is an old synonym for p_ in Head.U, the character
+ used to separate elements in the command shell search PATH.
+
+perl5 (perl5.U):
+ This variable contains the full path (if any) to a previously
+ installed perl5.005 or later suitable for running the script
+ to determine inc_version_list.
+
+perl (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+PERL_REVISION (Oldsyms.U):
+ In a Perl version number such as 5.6.2, this is the 5.
+ This value is manually set in patchlevel.h
+
+PERL_SUBVERSION (Oldsyms.U):
+ In a Perl version number such as 5.6.2, this is the 2.
+ Values greater than 50 represent potentially unstable
+ development subversions.
+ This value is manually set in patchlevel.h
+
+PERL_VERSION (Oldsyms.U):
+ In a Perl version number such as 5.6.2, this is the 6.
+ This value is manually set in patchlevel.h
+
+perladmin (perladmin.U):
+ Electronic mail address of the perl5 administrator.
+
+perllibs (End.U):
+ The list of libraries needed by Perl only (any libraries needed
+ by extensions only will by dropped, if using dynamic loading).
+
+perlpath (perlpath.U):
+ This variable contains the eventual value of the PERLPATH symbol,
+ which contains the name of the perl interpreter to be used in
+ shell scripts and in the "eval 'exec'" idiom.
+
+pg (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the pg program. After Configure runs,
+ the value is reset to a plain "pg" and is not useful.
+
+phostname (myhostname.U):
+ This variable contains the eventual value of the PHOSTNAME symbol,
+ which is a command that can be fed to popen() to get the host name.
+ The program should probably not presume that the domain is or isn't
+ there already.
+
+pidtype (pidtype.U):
+ This variable defines PIDTYPE to be something like pid_t, int,
+ ushort, or whatever type is used to declare process ids in the kernel.
+
+plibpth (libpth.U):
+ Holds the private path used by Configure to find out the libraries.
+ Its value is prepend to libpth. This variable takes care of special
+ machines, like the mips. Usually, it should be empty.
+
+pm_apiversion (xs_apiversion.U):
+ This variable contains the version of the oldest perl
+ compatible with the present perl. (That is, pure perl modules
+ written for $pm_apiversion will still work for the current
+ version). perl.c:incpush() and lib/lib.pm will automatically
+ search in $sitelib for older directories across major versions
+ back to pm_apiversion. This is only useful if you have a perl
+ library directory tree structured like the default one. The
+ versioned site_perl library was introduced in 5.005, so that's
+ the default setting for this variable. It's hard to imagine
+ it changing before Perl6. It is included here for symmetry
+ with xs_apiveprsion -- the searching algorithms will
+ (presumably) be similar.
+ See the INSTALL file for how this works.
+
+pmake (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+pr (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+prefix (prefix.U):
+ This variable holds the name of the directory below which the
+ user will install the package. Usually, this is /usr/local, and
+ executables go in /usr/local/bin, library stuff in /usr/local/lib,
+ man pages in /usr/local/man, etc. It is only used to set defaults
+ for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
+
+prefixexp (prefix.U):
+ This variable holds the full absolute path of the directory below
+ which the user will install the package. Derived from prefix.
+
+privlib (privlib.U):
+ This variable contains the eventual value of the PRIVLIB symbol,
+ which is the name of the private library for this package. It may
+ have a ~ on the front. It is up to the makefile to eventually create
+ this directory while performing installation (with ~ substitution).
+
+privlibexp (privlib.U):
+ This variable is the ~name expanded version of privlib, so that you
+ may use it directly in Makefiles or shell scripts.
+
+prototype (prototype.U):
+ This variable holds the eventual value of CAN_PROTOTYPE, which
+ indicates the C compiler can handle funciton prototypes.
+
+ptrsize (ptrsize.U):
+ This variable contains the value of the PTRSIZE symbol, which
+ indicates to the C program how many bytes there are in a pointer.
+
+quadkind (quadtype.U):
+ This variable, if defined, encodes the type of a quad:
+ 1 = int, 2 = long, 3 = long long, 4 = int64_t.
+
+quadtype (quadtype.U):
+ This variable defines Quad_t to be something like long, int,
+ long long, int64_t, or whatever type is used for 64-bit integers.
+
+randbits (randfunc.U):
+ Indicates how many bits are produced by the function used to
+ generate normalized random numbers.
+
+randfunc (randfunc.U):
+ Indicates the name of the random number function to use.
+ Values include drand48, random, and rand. In C programs,
+ the 'Drand01' macro is defined to generate uniformly distributed
+ random numbers over the range [0., 1.[ (see drand01 and nrand).
+
+randseedtype (randfunc.U):
+ Indicates the type of the argument of the seedfunc.
+
+ranlib (orderlib.U):
+ This variable is set to the pathname of the ranlib program, if it is
+ needed to generate random libraries. Set to ":" if ar can generate
+ random libraries or if random libraries are not supported
+
+rd_nodata (nblock_io.U):
+ This variable holds the return code from read() when no data is
+ present. It should be -1, but some systems return 0 when O_NDELAY is
+ used, which is a shame because you cannot make the difference between
+ no data and an EOF.. Sigh!
+
+revision (patchlevel.U):
+ The value of revision comes from the patchlevel.h file.
+ In a version number such as 5.6.1, this is the "5".
+ In patchlevel.h, this is referred to as "PERL_REVISION".
+
+rm (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the rm program. After Configure runs,
+ the value is reset to a plain "rm" and is not useful.
+
+rmail (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+runnm (usenm.U):
+ This variable contains 'true' or 'false' depending whether the
+ nm extraction should be performed or not, according to the value
+ of usenm and the flags on the Configure command line.
+
+sched_yield (d_pthread_y.U):
+ This variable defines the way to yield the execution
+ of the current thread.
+
+scriptdir (scriptdir.U):
+ This variable holds the name of the directory in which the user wants
+ to put publicly scripts for the package in question. It is either
+ the same directory as for binaries, or a special one that can be
+ mounted across different architectures, like /usr/share. Programs
+ must be prepared to deal with ~name expansion.
+
+scriptdirexp (scriptdir.U):
+ This variable is the same as scriptdir, but is filename expanded
+ at configuration time, for programs not wanting to bother with it.
+
+sed (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the sed program. After Configure runs,
+ the value is reset to a plain "sed" and is not useful.
+
+seedfunc (randfunc.U):
+ Indicates the random number generating seed function.
+ Values include srand48, srandom, and srand.
+
+selectminbits (selectminbits.U):
+ This variable holds the minimum number of bits operated by select.
+ That is, if you do select(n, ...), how many bits at least will be
+ cleared in the masks if some activity is detected. Usually this
+ is either n or 32*ceil(n/32), especially many little-endians do
+ the latter. This is only useful if you have select(), naturally.
+
+selecttype (selecttype.U):
+ This variable holds the type used for the 2nd, 3rd, and 4th
+ arguments to select. Usually, this is 'fd_set *', if HAS_FD_SET
+ is defined, and 'int *' otherwise. This is only useful if you
+ have select(), naturally.
+
+sendmail (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+sh (sh.U):
+ This variable contains the full pathname of the shell used
+ on this system to execute Bourne shell scripts. Usually, this will be
+ /bin/sh, though it's possible that some systems will have /bin/ksh,
+ /bin/pdksh, /bin/ash, /bin/bash, or even something such as
+ D:/bin/sh.exe.
+ This unit comes before Options.U, so you can't set sh with a '-D'
+ option, though you can override this (and startsh)
+ with '-O -Dsh=/bin/whatever -Dstartsh=whatever'
+
+shar (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+sharpbang (spitshell.U):
+ This variable contains the string #! if this system supports that
+ construct.
+
+shmattype (d_shmat.U):
+ This symbol contains the type of pointer returned by shmat().
+ It can be 'void *' or 'char *'.
+
+shortsize (intsize.U):
+ This variable contains the value of the SHORTSIZE symbol which
+ indicates to the C program how many bytes there are in a short.
+
+shrpenv (libperl.U):
+ If the user builds a shared libperl.so, then we need to tell the
+ 'perl' executable where it will be able to find the installed libperl.so.
+ One way to do this on some systems is to set the environment variable
+ LD_RUN_PATH to the directory that will be the final location of the
+ shared libperl.so. The makefile can use this with something like
+ $shrpenv $(CC) -o perl perlmain.o $libperl $libs
+ Typical values are
+ shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
+ or
+ shrpenv=''
+ See the main perl Makefile.SH for actual working usage.
+ Alternatively, we might be able to use a command line option such
+ as -R $archlibexp/CORE (Solaris, NetBSD) or -Wl,-rpath
+ $archlibexp/CORE (Linux).
+
+shsharp (spitshell.U):
+ This variable tells further Configure units whether your sh can
+ handle # comments.
+
+sig_count (sig_name.U):
+ This variable holds a number larger than the largest valid
+ signal number. This is usually the same as the NSIG macro.
+
+sig_name (sig_name.U):
+ This variable holds the signal names, space separated. The leading
+ SIG in signal name is removed. A ZERO is prepended to the
+ list. This is currently not used.
+
+sig_name_init (sig_name.U):
+ This variable holds the signal names, enclosed in double quotes and
+ separated by commas, suitable for use in the SIG_NAME definition
+ below. A "ZERO" is prepended to the list, and the list is
+ terminated with a plain 0. The leading SIG in signal names
+ is removed. See sig_num.
+
+sig_num (sig_name.U):
+ This variable holds the signal numbers, space separated. A ZERO is
+ prepended to the list (corresponding to the fake SIGZERO), and
+ the list is terminated with a 0. Those numbers correspond to
+ the value of the signal listed in the same place within the
+ sig_name list.
+
+sig_num_init (sig_name.U):
+ This variable holds the signal numbers, enclosed in double quotes and
+ separated by commas, suitable for use in the SIG_NUM definition
+ below. A "ZERO" is prepended to the list, and the list is
+ terminated with a plain 0.
+
+signal_t (d_voidsig.U):
+ This variable holds the type of the signal handler (void or int).
+
+sitearch (sitearch.U):
+ This variable contains the eventual value of the SITEARCH symbol,
+ which is the name of the private library for this package. It may
+ have a ~ on the front. It is up to the makefile to eventually create
+ this directory while performing installation (with ~ substitution).
+ The standard distribution will put nothing in this directory.
+ After perl has been installed, users may install their own local
+ architecture-dependent modules in this directory with
+ MakeMaker Makefile.PL
+ or equivalent. See INSTALL for details.
+
+sitearchexp (sitearch.U):
+ This variable is the ~name expanded version of sitearch, so that you
+ may use it directly in Makefiles or shell scripts.
+
+sitebin (sitebin.U):
+ This variable holds the name of the directory in which the user wants
+ to put add-on publicly executable files for the package in question. It
+ is most often a local directory such as /usr/local/bin. Programs using
+ this variable must be prepared to deal with ~name substitution.
+ The standard distribution will put nothing in this directory.
+ After perl has been installed, users may install their own local
+ executables in this directory with
+ MakeMaker Makefile.PL
+ or equivalent. See INSTALL for details.
+
+sitebinexp (sitebin.U):
+ This is the same as the sitebin variable, but is filename expanded at
+ configuration time, for use in your makefiles.
+
+sitelib (sitelib.U):
+ This variable contains the eventual value of the SITELIB symbol,
+ which is the name of the private library for this package. It may
+ have a ~ on the front. It is up to the makefile to eventually create
+ this directory while performing installation (with ~ substitution).
+ The standard distribution will put nothing in this directory.
+ After perl has been installed, users may install their own local
+ architecture-independent modules in this directory with
+ MakeMaker Makefile.PL
+ or equivalent. See INSTALL for details.
+
+sitelib_stem (sitelib.U):
+ This variable is $sitelibexp with any trailing version-specific component
+ removed. The elements in inc_version_list (inc_version_list.U) can
+ be tacked onto this variable to generate a list of directories to search.
+
+sitelibexp (sitelib.U):
+ This variable is the ~name expanded version of sitelib, so that you
+ may use it directly in Makefiles or shell scripts.
+
+siteprefix (siteprefix.U):
+ This variable holds the full absolute path of the directory below
+ which the user will install add-on packages.
+ See INSTALL for usage and examples.
+
+siteprefixexp (siteprefix.U):
+ This variable holds the full absolute path of the directory below
+ which the user will install add-on packages. Derived from siteprefix.
+
+sizesize (sizesize.U):
+ This variable contains the size of a sizetype in bytes.
+
+sizetype (sizetype.U):
+ This variable defines sizetype to be something like size_t,
+ unsigned long, or whatever type is used to declare length
+ parameters for string functions.
+
+sleep (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+smail (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+so (so.U):
+ This variable holds the extension used to identify shared libraries
+ (also known as shared objects) on the system. Usually set to 'so'.
+
+sockethdr (d_socket.U):
+ This variable has any cpp '-I' flags needed for socket support.
+
+socketlib (d_socket.U):
+ This variable has the names of any libraries needed for socket support.
+
+socksizetype (socksizetype.U):
+ This variable holds the type used for the size argument
+ for various socket calls like accept. Usual values include
+ socklen_t, size_t, and int.
+
+sort (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the sort program. After Configure runs,
+ the value is reset to a plain "sort" and is not useful.
+
+spackage (package.U):
+ This variable contains the name of the package being constructed,
+ with the first letter uppercased, i.e. suitable for starting
+ sentences.
+
+spitshell (spitshell.U):
+ This variable contains the command necessary to spit out a runnable
+ shell on this system. It is either cat or a grep '-v' for # comments.
+
+sPRId64 (quadfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format 64-bit decimal numbers (format 'd') for output.
+
+sPRIeldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'e') for output.
+
+sPRIEUldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'E') for output.
+ The 'U' in the name is to separate this from sPRIeldbl so that even
+ case-blind systems can see the difference.
+
+sPRIfldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'f') for output.
+
+sPRIFUldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'F') for output.
+ The 'U' in the name is to separate this from sPRIfldbl so that even
+ case-blind systems can see the difference.
+
+sPRIgldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'g') for output.
+
+sPRIGUldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'G') for output.
+ The 'U' in the name is to separate this from sPRIgldbl so that even
+ case-blind systems can see the difference.
+
+sPRIi64 (quadfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format 64-bit decimal numbers (format 'i') for output.
+
+sPRIo64 (quadfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format 64-bit octal numbers (format 'o') for output.
+
+sPRIu64 (quadfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format 64-bit unsigned decimal numbers (format 'u') for output.
+
+sPRIx64 (quadfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format 64-bit hexadecimal numbers (format 'x') for output.
+
+sPRIXU64 (quadfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format 64-bit hExADECimAl numbers (format 'X') for output.
+ The 'U' in the name is to separate this from sPRIx64 so that even
+ case-blind systems can see the difference.
+
+src (src.U):
+ This variable holds the path to the package source. It is up to
+ the Makefile to use this variable and set VPATH accordingly to
+ find the sources remotely.
+
+sSCNfldbl (longdblfio.U):
+ This variable, if defined, contains the string used by stdio to
+ format long doubles (format 'f') for input.
+
+ssizetype (ssizetype.U):
+ This variable defines ssizetype to be something like ssize_t,
+ long or int. It is used by functions that return a count
+ of bytes or an error condition. It must be a signed type.
+ We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
+
+startperl (startperl.U):
+ This variable contains the string to put on the front of a perl
+ script to make sure (hopefully) that it runs with perl and not some
+ shell. Of course, that leading line must be followed by the classical
+ perl idiom:
+ eval 'exec perl -S $0 ${1+"$@"}'
+ if $running_under_some_shell;
+ to guarantee perl startup should the shell execute the script. Note
+ that this magic incatation is not understood by csh.
+
+startsh (startsh.U):
+ This variable contains the string to put on the front of a shell
+ script to make sure (hopefully) that it runs with sh and not some
+ other shell.
+
+static_ext (Extensions.U):
+ This variable holds a list of XS extension files we want to
+ link statically into the package. It is used by Makefile.
+
+stdchar (stdchar.U):
+ This variable conditionally defines STDCHAR to be the type of char
+ used in stdio.h. It has the values "unsigned char" or "char".
+
+stdio_base (d_stdstdio.U):
+ This variable defines how, given a FILE pointer, fp, to access the
+ _base field (or equivalent) of stdio.h's FILE structure. This will
+ be used to define the macro FILE_base(fp).
+
+stdio_bufsiz (d_stdstdio.U):
+ This variable defines how, given a FILE pointer, fp, to determine
+ the number of bytes store in the I/O buffer pointer to by the
+ _base field (or equivalent) of stdio.h's FILE structure. This will
+ be used to define the macro FILE_bufsiz(fp).
+
+stdio_cnt (d_stdstdio.U):
+ This variable defines how, given a FILE pointer, fp, to access the
+ _cnt field (or equivalent) of stdio.h's FILE structure. This will
+ be used to define the macro FILE_cnt(fp).
+
+stdio_filbuf (d_stdstdio.U):
+ This variable defines how, given a FILE pointer, fp, to tell
+ stdio to refill it's internal buffers (?). This will
+ be used to define the macro FILE_filbuf(fp).
+
+stdio_ptr (d_stdstdio.U):
+ This variable defines how, given a FILE pointer, fp, to access the
+ _ptr field (or equivalent) of stdio.h's FILE structure. This will
+ be used to define the macro FILE_ptr(fp).
+
+stdio_stream_array (stdio_streams.U):
+ This variable tells the name of the array holding the stdio streams.
+ Usual values include _iob, __iob, and __sF.
+
+strings (i_string.U):
+ This variable holds the full path of the string header that will be
+ used. Typically /usr/include/string.h or /usr/include/strings.h.
+
+submit (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+subversion (patchlevel.U):
+ The subversion level of this package.
+ The value of subversion comes from the patchlevel.h file.
+ In a version number such as 5.6.1, this is the "1".
+ In patchlevel.h, this is referred to as "PERL_SUBVERSION".
+ This is unique to perl.
+
+sysman (sysman.U):
+ This variable holds the place where the manual is located on this
+ system. It is not the place where the user wants to put his manual
+ pages. Rather it is the place where Configure may look to find manual
+ for unix commands (section 1 of the manual usually). See mansrc.
+
+tail (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+tar (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+tbl (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+tee (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+test (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the test program. After Configure runs,
+ the value is reset to a plain "test" and is not useful.
+
+timeincl (i_time.U):
+ This variable holds the full path of the included time header(s).
+
+timetype (d_time.U):
+ This variable holds the type returned by time(). It can be long,
+ or time_t on BSD sites (in which case <sys/types.h> should be
+ included). Anyway, the type Time_t should be used.
+
+touch (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the touch program. After Configure runs,
+ the value is reset to a plain "touch" and is not useful.
+
+tr (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the tr program. After Configure runs,
+ the value is reset to a plain "tr" and is not useful.
+
+trnl (trnl.U):
+ This variable contains the value to be passed to the tr(1)
+ command to transliterate a newline. Typical values are
+ '\012' and '\n'. This is needed for EBCDIC systems where
+ newline is not necessarily '\012'.
+
+troff (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+u16size (perlxv.U):
+ This variable is the size of an U16 in bytes.
+
+u16type (perlxv.U):
+ This variable contains the C type used for Perl's U16.
+
+u32size (perlxv.U):
+ This variable is the size of an U32 in bytes.
+
+u32type (perlxv.U):
+ This variable contains the C type used for Perl's U32.
+
+u64size (perlxv.U):
+ This variable is the size of an U64 in bytes.
+
+u64type (perlxv.U):
+ This variable contains the C type used for Perl's U64.
+
+u8size (perlxv.U):
+ This variable is the size of an U8 in bytes.
+
+u8type (perlxv.U):
+ This variable contains the C type used for Perl's U8.
+
+uidformat (uidf.U):
+ This variable contains the format string used for printing a Uid_t.
+
+uidsign (uidsign.U):
+ This variable contains the signedness of a uidtype.
+ 1 for unsigned, -1 for signed.
+
+uidsize (uidsize.U):
+ This variable contains the size of a uidtype in bytes.
+
+uidtype (uidtype.U):
+ This variable defines Uid_t to be something like uid_t, int,
+ ushort, or whatever type is used to declare user ids in the kernel.
+
+uname (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the uname program. After Configure runs,
+ the value is reset to a plain "uname" and is not useful.
+
+uniq (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the uniq program. After Configure runs,
+ the value is reset to a plain "uniq" and is not useful.
+
+uquadtype (quadtype.U):
+ This variable defines Uquad_t to be something like unsigned long,
+ unsigned int, unsigned long long, uint64_t, or whatever type is
+ used for 64-bit integers.
+
+use5005threads (usethreads.U):
+ This variable conditionally defines the USE_5005THREADS symbol,
+ and indicates that Perl should be built to use the 5.005-based
+ threading implementation.
+
+use64bitall (use64bits.U):
+ This variable conditionally defines the USE_64_BIT_ALL symbol,
+ and indicates that 64-bit integer types should be used
+ when available. The maximal possible
+ 64-bitness is employed: LP64 or ILP64, meaning that you will
+ be able to use more than 2 gigabytes of memory. This mode is
+ even more binary incompatible than USE_64_BIT_INT. You may not
+ be able to run the resulting executable in a 32-bit CPU at all or
+ you may need at least to reboot your OS to 64-bit mode.
+
+use64bitint (use64bits.U):
+ This variable conditionally defines the USE_64_BIT_INT symbol,
+ and indicates that 64-bit integer types should be used
+ when available. The minimal possible 64-bitness
+ is employed, just enough to get 64-bit integers into Perl.
+ This may mean using for example "long longs", while your memory
+ may still be limited to 2 gigabytes.
+
+usedl (dlsrc.U):
+ This variable indicates if the system supports dynamic
+ loading of some sort. See also dlsrc and dlobj.
+
+useithreads (usethreads.U):
+ This variable conditionally defines the USE_ITHREADS symbol,
+ and indicates that Perl should be built to use the interpreter-based
+ threading implementation.
+
+uselargefiles (uselfs.U):
+ This variable conditionally defines the USE_LARGE_FILES symbol,
+ and indicates that large file interfaces should be used when
+ available.
+
+uselongdouble (uselongdbl.U):
+ This variable conditionally defines the USE_LONG_DOUBLE symbol,
+ and indicates that long doubles should be used when available.
+
+usemorebits (usemorebits.U):
+ This variable conditionally defines the USE_MORE_BITS symbol,
+ and indicates that explicit 64-bit interfaces and long doubles
+ should be used when available.
+
+usemultiplicity (usemultiplicity.U):
+ This variable conditionally defines the MULTIPLICITY symbol,
+ and indicates that Perl should be built to use multiplicity.
+
+usemymalloc (mallocsrc.U):
+ This variable contains y if the malloc that comes with this package
+ is desired over the system's version of malloc. People often include
+ special versions of malloc for effiency, but such versions are often
+ less portable. See also mallocsrc and mallocobj.
+ If this is 'y', then -lmalloc is removed from $libs.
+
+usenm (usenm.U):
+ This variable contains 'true' or 'false' depending whether the
+ nm extraction is wanted or not.
+
+useopcode (Extensions.U):
+ This variable holds either 'true' or 'false' to indicate
+ whether the Opcode extension should be used. The sole
+ use for this currently is to allow an easy mechanism
+ for users to skip the Opcode extension from the Configure
+ command line.
+
+useperlio (useperlio.U):
+ This variable conditionally defines the USE_PERLIO symbol,
+ and indicates that the PerlIO abstraction should be
+ used throughout.
+
+useposix (Extensions.U):
+ This variable holds either 'true' or 'false' to indicate
+ whether the POSIX extension should be used. The sole
+ use for this currently is to allow an easy mechanism
+ for hints files to indicate that POSIX will not compile
+ on a particular system.
+
+usesfio (d_sfio.U):
+ This variable is set to true when the user agrees to use sfio.
+ It is set to false when sfio is not available or when the user
+ explicitely requests not to use sfio. It is here primarily so
+ that command-line settings can override the auto-detection of
+ d_sfio without running into a "WHOA THERE".
+
+useshrplib (libperl.U):
+ This variable is set to 'yes' if the user wishes
+ to build a shared libperl, and 'no' otherwise.
+
+usesocks (usesocks.U):
+ This variable conditionally defines the USE_SOCKS symbol,
+ and indicates that Perl should be built to use SOCKS.
+
+usethreads (usethreads.U):
+ This variable conditionally defines the USE_THREADS symbol,
+ and indicates that Perl should be built to use threads.
+
+usevendorprefix (vendorprefix.U):
+ This variable tells whether the vendorprefix
+ and consequently other vendor* paths are in use.
+
+usevfork (d_vfork.U):
+ This variable is set to true when the user accepts to use vfork.
+ It is set to false when no vfork is available or when the user
+ explicitely requests not to use vfork.
+
+usrinc (usrinc.U):
+ This variable holds the path of the include files, which is
+ usually /usr/include. It is mainly used by other Configure units.
+
+uuname (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+uvoformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl UV as an unsigned octal integer.
+
+uvsize (perlxv.U):
+ This variable is the size of a UV in bytes.
+
+uvtype (perlxv.U):
+ This variable contains the C type used for Perl's UV.
+
+uvuformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl UV as an unsigned decimal integer.
+
+uvxformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
+
+uvXUformat (perlxvf.U):
+ This variable contains the format string used for printing
+ a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
+
+vendorarch (vendorarch.U):
+ This variable contains the value of the PERL_VENDORARCH symbol.
+ It may have a ~ on the front.
+ The standard distribution will put nothing in this directory.
+ Vendors who distribute perl may wish to place their own
+ architecture-dependent modules and extensions in this directory with
+ MakeMaker Makefile.PL INSTALLDIRS=vendor
+ or equivalent. See INSTALL for details.
+
+vendorarchexp (vendorarch.U):
+ This variable is the ~name expanded version of vendorarch, so that you
+ may use it directly in Makefiles or shell scripts.
+
+vendorbin (vendorbin.U):
+ This variable contains the eventual value of the VENDORBIN symbol.
+ It may have a ~ on the front.
+ The standard distribution will put nothing in this directory.
+ Vendors who distribute perl may wish to place additional
+ binaries in this directory with
+ MakeMaker Makefile.PL INSTALLDIRS=vendor
+ or equivalent. See INSTALL for details.
+
+vendorbinexp (vendorbin.U):
+ This variable is the ~name expanded version of vendorbin, so that you
+ may use it directly in Makefiles or shell scripts.
+
+vendorlib (vendorlib.U):
+ This variable contains the eventual value of the VENDORLIB symbol,
+ which is the name of the private library for this package.
+ The standard distribution will put nothing in this directory.
+ Vendors who distribute perl may wish to place their own
+ modules in this directory with
+ MakeMaker Makefile.PL INSTALLDIRS=vendor
+ or equivalent. See INSTALL for details.
+
+vendorlib_stem (vendorlib.U):
+ This variable is $vendorlibexp with any trailing version-specific component
+ removed. The elements in inc_version_list (inc_version_list.U) can
+ be tacked onto this variable to generate a list of directories to search.
+
+vendorlibexp (vendorlib.U):
+ This variable is the ~name expanded version of vendorlib, so that you
+ may use it directly in Makefiles or shell scripts.
+
+vendorprefix (vendorprefix.U):
+ This variable holds the full absolute path of the directory below
+ which the vendor will install add-on packages.
+ See INSTALL for usage and examples.
+
+vendorprefixexp (vendorprefix.U):
+ This variable holds the full absolute path of the directory below
+ which the vendor will install add-on packages. Derived from vendorprefix.
+
+version (patchlevel.U):
+ The full version number of this package, such as 5.6.1 (or 5_6_1).
+ This combines revision, patchlevel, and subversion to get the
+ full version number, including any possible subversions.
+ This is suitable for use as a directory name, and hence is
+ filesystem dependent.
+
+versiononly (versiononly.U):
+ If set, this symbol indicates that only the version-specific
+ components of a perl installation should be installed.
+ This may be useful for making a test installation of a new
+ version without disturbing the existing installation.
+ Setting versiononly is equivalent to setting installperl's -v option.
+ In particular, the non-versioned scripts and programs such as
+ a2p, c2ph, h2xs, pod2*, and perldoc are not installed
+ (see INSTALL for a more complete list). Nor are the man
+ pages installed.
+ Usually, this is undef.
+
+vi (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+voidflags (voidflags.U):
+ This variable contains the eventual value of the VOIDFLAGS symbol,
+ which indicates how much support of the void type is given by this
+ compiler. See VOIDFLAGS for more info.
+
+xlibpth (libpth.U):
+ This variable holds extra path (space-separated) used to find
+ libraries on this platform, for example CPU-specific libraries
+ (on multi-CPU platforms) may be listed here.
+
+xs_apiversion (xs_apiversion.U):
+ This variable contains the version of the oldest perl binary
+ compatible with the present perl. perl.c:incpush() and
+ lib/lib.pm will automatically search in $sitearch for older
+ directories across major versions back to xs_apiversion.
+ This is only useful if you have a perl library directory tree
+ structured like the default one.
+ See INSTALL for how this works.
+ The versioned site_perl directory was introduced in 5.005,
+ so that is the lowest possible value.
+ Since this can depend on compile time options (such as
+ bincompat) it is set by Configure. Other non-default sources
+ of potential incompatibility, such as multiplicity, threads,
+ debugging, 64bits, sfio, etc., are not checked for currently,
+ though in principle we could go snooping around in old
+ Config.pm files.
+
+zcat (Loc.U):
+ This variable is defined but not used by Configure.
+ The value is a plain '' and is not useful.
+
+zip (Loc.U):
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the zip program. After Configure runs,
+ the value is reset to a plain "zip" and is not useful.
+
projects / p5sagit/p5-mst-13.2.git / blobdiff