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_attribute_format (d_attribut_format.U):
+ This variable conditionally defines HASATTRIBUTE_FORMAT, which
+ indicates the C compiler can check for printf-like formats.
+
+d_attribute_malloc (d_attribute_malloc.U):
+ This variable conditionally defines HASATTRIBUTE_MALLOC, which
+ indicates the C compiler can understand functions as having
+ malloc-like semantics.
+
+d_attribute_nonnull (d_attribute_nonnull.U):
+ This variable conditionally defines HASATTRIBUTE_NONNULL, which
+ indicates that the C compiler can know that certain arguments
+ must not be NULL, and will check accordingly at compile time.
+
+d_attribute_noreturn (d_attribute_noreturn.U):
+ This variable conditionally defines HASATTRIBUTE_NORETURN, which
+ indicates that the C compiler can know that certain functions
+ are guaranteed never to return.
+
+d_attribute_pure (d_attribute_pure.U):
+ This variable conditionally defines HASATTRIBUTE_PURE, which
+ indicates that the C compiler can know that certain functions
+ are "pure" functions, meaning that they have no side effects, and
+ only rely on function input and/or global data for their results.
+
+d_attribute_unused (d_attribute_unused.U):
+ This variable conditionally defines HASATTRIBUTE_UNUSED, which
+ indicates that the C compiler can know that certain variables
+ and arguments may not always be used, and to not throw warnings
+ if they don't get used.
+
+d_attribute_warn_unused_result (d_attribute_warn_unused_result.U):
+ This variable conditionally defines
+ HASATTRIBUTE_WARN_UNUSED_RESULT, which indicates that the C
+ compiler can know that certain functions have a return values
+ that must not be ignored, such as malloc() or open().
d_bcmp (d_bcmp.U):
This variable conditionally defines the HAS_BCMP symbol if
This variable conditionally defines the HAS_CLASS symbol, which
indicates to the C program that the class() routine is available.
+d_clearenv (d_clearenv.U):
+ This variable conditionally defines the HAS_CLEARENV symbol, which
+ indicates to the C program that the clearenv () routine is available.
+
d_closedir (d_closedir.U):
This variable conditionally defines HAS_CLOSEDIR if closedir() is
available.
that the ftime() routine exists. The ftime() routine is basically
a sub-second accuracy clock.
+d_futimes (f_futimes.U):
+ This variable conditionally defines the HAS_FUTIMES symbol, which
+ indicates to the C program that the futimes() routine is available.
+
d_Gconvert (d_gconvert.U):
This variable holds what Gconvert is defined as to convert
floating point numbers into strings. By default, Configure
This variable conditionally defines HAS_MADVISE if madvise() is
available to map a file into memory.
+d_malloc_size (d_malloc_size.U):
+ This symbol, if defined, indicates that the malloc_size
+ routine is available for use.
+
+d_malloc_good_size (d_malloc_good_size.U):
+ This symbol, if defined, indicates that the malloc_good_size
+ routine is available for use.
+
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
This variable indicates whether a variable of type nvtype
can preserve all the bits a variable of type uvtype.
+d_nv_zero_is_allbits_zero (perlxv.U):
+ This variable indicates whether a variable of type nvtype
+ stores 0.0 in memory as all bits zero.
+
d_off64_t (d_off64_t.U):
This symbol will be defined if the C compiler supports off64_t.
This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
indicates to the C program that the socks5_init() routine is available.
+d_sprintf_returns_strlen (d_sprintf_returns_strlen.U):
+ This variable defines whether sprintf returns the length of the string
+ (as per the ANSI spec). Some C libraries retain compatibility with
+ pre-ANSI C and return a pointer to the passed in buffer; for these
+ this variable will be undef.
+
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.
This variable conditionally defines the HAS_STRFTIME symbol, which
indicates to the C program that the strftime() routine is available.
+d_strlcat (d_strlcat.U):
+ This variable conditionally defines the HAS_STRLCAT symbol, which
+ indicates to the C program that the strlcat () routine is available.
+
+d_strlcpy (d_strlcpy.U):
+ This variable conditionally defines the HAS_STRLCPY symbol, which
+ indicates to the C program that the strlcpy () 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_UNORDERED symbol, which
indicates to the C program that the unordered() routine is available.
+d_unsetenv (d_unsetenv.U):
+ This variable conditionally defines the HAS_UNSETENV symbol, which
+ indicates to the C program that the unsetenv () routine is available.
+
d_usleep (d_usleep.U):
This variable conditionally defines HAS_USLEEP if usleep() is
available to do high granularity sleeps.
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.
This variable conditionally defines the USE_LONG_DOUBLE symbol,
and indicates that long doubles should be used when available.
+usemallocwrap (mallocsrc.U):
+ This variable contains y if we are wrapping malloc to prevent
+ integer overflow during size calculations.
+
usemorebits (usemorebits.U):
This variable conditionally defines the USE_MORE_BITS symbol,
and indicates that explicit 64-bit interfaces and long doubles
meaningful if usethreads is set and is very experimental, it is
not even prompted for.
+userelocatableinc (XXX.U):
+ This variable is set to true to indicate that perl should relocate
+ @INC entries at runtime based on the path to the perl binary.
+ Any @INC paths starting ".../" are relocated relative to the directory
+ containing the perl binary, and a logical cleanup of the path is then
+ made around the join point (removing "dir/../" pairs)
+
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
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
- 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.
-
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.