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.
+ This variable is used internally by Configure to determine the
+ full pathname (if any) of the bison program. After Configure runs,
+ the value is reset to a plain "bison" and is not useful.
byacc (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__fwalk (d__fwalk.U):
+ This variable conditionally defines HAS__FWALK if _fwalk() is
+ available to apply a function to all the file handles.
+
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.
This variable conditionally defines HAS_CLOSEDIR if closedir() is
available.
+d_cmsghdr_s (d_cmsghdr_s.U):
+ This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
+ which indicates that the struct cmsghdr is supported.
+
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
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
This variable conditionally defines the HAS_FSTATVFS symbol, which
indicates to the C program that the fstatvfs() routine is available.
+d_fsync (d_fsync.U):
+ This variable conditionally defines the HAS_FSYNC symbol, which
+ indicates to the C program that the fsync() 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.
prototypes for the various gethost*() functions.
See also netdbtype.U for probing for various netdb types.
+d_getitimer (d_getitimer.U):
+ This variable conditionally defines the HAS_GETITIMER symbol, which
+ indicates to the C program that the getitimer() routine is available.
+
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
prototypes for the various getnet*() functions.
See also netdbtype.U for probing for various netdb types.
+d_getpagsz (d_getpagsz.U):
+ This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
+ is available to get the system page size.
+
d_getpbyname (d_getprotby.U):
This variable conditionally defines the HAS_GETPROTOBYNAME
symbol, which indicates to the C program that the
This variable conditionally defines the HAS_MSGGET symbol, which
indicates to the C program that the msgget() routine is available.
+d_msghdr_s (d_msghdr_s.U):
+ This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
+ which indicates that the struct msghdr is supported.
+
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.
indicates to the C program that the readlink() routine is available
to read the value of a symbolic link.
+d_readv (d_readv.U):
+ This variable conditionally defines the HAS_READV symbol, which
+ indicates to the C program that the readv() routine is available.
+
+d_recvmsg (d_recvmsg.U):
+ This variable conditionally defines the HAS_RECVMSG symbol, which
+ indicates to the C program that the recvmsg() routine is available.
+
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
the memcpy() routine is available and can be used to compare relative
magnitudes of chars with their high bits set.
+d_sbrkproto (d_sbrkproto.U):
+ This variable conditionally defines the HAS_SBRK_PROTO symbol,
+ which indicates to the C program that the system provides
+ a prototype for the sbrk() function. Otherwise, it is
+ up to the program to supply one.
+
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
This variable conditionally defines the HAS_SEMOP symbol, which
indicates to the C program that the semop() routine is available.
+d_sendmsg (d_sendmsg.U):
+ This variable conditionally defines the HAS_SENDMSG symbol, which
+ indicates to the C program that the sendmsg() 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
This variable conditionally defines HAS_SETHOSTENT if sethostent() is
available.
+d_setitimer (d_setitimer.U):
+ This variable conditionally defines the HAS_SETITIMER symbol, which
+ indicates to the C program that the setitimer() routine 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
This variable conditionally defines the HAS_SIGACTION symbol, which
indicates that the Vr4 sigaction() routine is available.
+d_sigprocmask (d_sigprocmask.U):
+ This variable conditionally defines HAS_SIGPROCMASK
+ if sigprocmask() is available to examine or change the signal mask
+ of the calling process.
+
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_sockatmark (d_sockatmark.U):
+ This variable conditionally defines the HAS_SOCKATMARK symbol, which
+ indicates to the C program that the sockatmark() routine is available.
+
d_socket (d_socket.U):
This variable conditionally defines HAS_SOCKET, which indicates
that the BSD socket interface is supported.
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.
This variable conditionally defines HAS_STRERROR if strerror() is
available to translate error numbers to strings.
+d_strftime (d_strftime.U):
+ This variable conditionally defines the HAS_STRFTIME symbol, which
+ indicates to the C program that the strftime() routine is available.
+
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
This variable conditionally defines the HAS_STRTOLL symbol, which
indicates to the C program that the strtoll() routine is available.
+d_strtoq (d_strtoq.U):
+ This variable conditionally defines the HAS_STRTOQ symbol, which
+ indicates to the C program that the strtoq() 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
This variable conditionally defines HAS_TZNAME if tzname[] is
available to access timezone names.
+d_u32align (d_u32align.U):
+ This variable tells whether you must access character data
+ through U32-aligned pointers.
+
+d_ualarm (d_ualarm.U):
+ This variable conditionally defines the HAS_UALARM symbol, which
+ indicates to the C program that the ualarm() routine is available.
+
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.
This variable conditionally defines HAS_UNION_SEMUN if the
union semun is defined by including <sys/sem.h>.
+d_usleep (d_usleep.U):
+ This variable conditionally defines HAS_USLEEP if usleep() is
+ available to do high granularity sleeps.
+
d_ustat (d_ustat.U):
This variable conditionally defines HAS_USTAT if ustat() is
available to query file system statistics by dev_t.
indicates to the C program that the wctomb() routine is available
to convert a wide character to a multibyte.
+d_writev (d_writev.U):
+ This variable conditionally defines the HAS_WRITEV symbol, which
+ indicates to the C program that the writev() routine is available.
+
d_xenix (Guess.U):
This variable conditionally defines the symbol XENIX, which alerts
the C program that it runs under Xenix.
This variable contains the value of the INTSIZE symbol, which
indicates to the C program how many bytes there are in an int.
+issymlink (issymlink.U):
+ This variable holds the test command to test for a symbolic link
+ (if they are supported). Typical values include 'test -h' and
+ 'test -L'.
+
ivdformat (perlxvf.U):
This variable contains the format string used for printing
a Perl IV as a signed decimal integer.
command to suppress newline. Otherwise it is null. Correct usage is
$echo $n "prompt for a question: $c".
+need_va_copy (need_va_copy.U):
+ This symbol, if defined, indicates that the system stores
+ the variable argument list datatype, va_list, in a format
+ that cannot be copied by simple assignment, so that some
+ other means must be used when copying is required.
+ As such systems vary in their provision (or non-provision)
+ of copying mechanisms, handy.h defines a platform-
+ independent macro, Perl_va_copy(src, dst), to do the job.
+
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.
below. A "ZERO" is prepended to the list, and the list is
terminated with a plain 0.
+sig_size (sig_name.U):
+ This variable contains the number of elements of the sig_name
+ and sig_num arrays, excluding the final NULL entry.
+
signal_t (d_voidsig.U):
This variable holds the type of the signal handler (void or int).
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.
though in principle we could go snooping around in old
Config.pm files.
+yacc (yacc.U):
+ This variable holds the name of the compiler compiler we
+ want to use in the Makefile. It can be yacc, byacc, or bison -y.
+
+yaccflags (yacc.U):
+ This variable contains any additional yacc flags desired by the
+ user. It is up to the Makefile to use this.
+
zcat (Loc.U):
This variable is defined but not used by Configure.
The value is a plain '' and is not useful.