This variable conditionally defines HAS__FWALK if _fwalk() is
available to apply a function to all the file handles.
+d_accept4 (d_accept4.U):
+ This variable conditionally defines HAS_ACCEPT4 if accept4() is
+ available to accept socket connections.
+
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.
setpgrp needs two arguments whereas USG one needs none.
See also d_setpgid for a POSIX interface.
+d_builtin_add_overflow (d_builtin_overflow.U):
+ This variable conditionally defines HAS_BUILTIN_ADD_OVERFLOW, which
+ indicates that the compiler supports __builtin_add_overflow(x,y,&z)
+ for safely adding x and y into z while checking for overflow.
+
d_builtin_choose_expr (d_builtin.U):
This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
indicates that the compiler supports __builtin_choose_expr(x,y,z).
__builtin_expect to provide the compiler with branch prediction
information.
+d_builtin_mul_overflow (d_builtin_overflow.U):
+ This variable conditionally defines HAS_BUILTIN_MUL_OVERFLOW, which
+ indicates that the compiler supports __builtin_mul_overflow(x,y,&z)
+ for safely multiplying x and y into z while checking for overflow.
+
+d_builtin_sub_overflow (d_builtin_overflow.U):
+ This variable conditionally defines HAS_BUILTIN_SUB_OVERFLOW, which
+ indicates that the compiler supports __builtin_sub_overflow(x,y,&z)
+ for safely subtracting y from x into z while checking for overflow.
+
d_c99_variadic_macros (d_c99_variadic.U):
This variable conditionally defines the HAS_C99_VARIADIC_MACROS
symbol, which indicates to the C program that C99 variadic macros
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
- const type.
-
d_copysign (d_copysign.U):
This variable conditionally defines the HAS_COPYSIGN symbol, which
indicates to the C program that the copysign() routine is available.
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_dbminitproto (d_dbminitproto.U):
This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
which indicates to the C program that the system provides
which indicates that the double type has an infinity.
d_double_has_nan (longdblfio.U):
- This variable conditionally defines the symbol DOUBLE_HAS_INF
+ This variable conditionally defines the symbol DOUBLE_HAS_NAN
which indicates that the double type has a not-a-number.
d_double_has_negative_zero (longdblfio.U):
This variable conditionally defines HAS_DUP2 if dup2() is
available to duplicate file descriptors.
+d_dup3 (d_dup3.U):
+ This variable conditionally defines HAS_DUP3 if dup3() is
+ available to duplicate file descriptors.
+
d_duplocale (d_newlocale.U):
This variable conditionally defines the HAS_DUPLOCALE symbol, which
indicates to the C program that the duplocale() routine is available
This variable conditionally defines GRPASSWD, which indicates
that struct group in <grp.h> contains gr_passwd.
+d_has_C_UTF8 (d_setlocale.U):
+ This variable is set to either "true" or "false" depending on
+ whether the compilation system supports the C.UTF-8 locale.
+
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
indicates to the C program that the llroundl() routine is available
to return the long long value nearest to x away from zero.
+d_localeconv_l (d_localeconv_l.U):
+ This variable conditionally defines the HAS_LOCALECONV_L symbol, which
+ indicates to the C program that the localeconv_l() routine is available.
+
d_localtime64 (d_timefuncs64.U):
This variable conditionally defines the HAS_LOCALTIME64 symbol, which
indicates to the C program that the localtime64 () routine is available.
indicates to the C program that the mblen() routine is available
to find the number of bytes in a multibye character.
+d_mbrlen (d_mbrlen.U):
+ This variable conditionally defines the HAS_MBRLEN symbol if the
+ mbrlen() routine is available to be used to get the length of
+ multi-byte character strings.
+
+d_mbrtowc (d_mbrtowc.U):
+ This variable conditionally defines the HAS_MBRTOWC symbol if the
+ mbrtowc() routine is available to be used to convert a multi-byte
+ character into a wide 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
This variable conditionally defines the HAS_MKFIFO symbol, which
indicates to the C program that the mkfifo() routine is available.
+d_mkostemp (d_mkostemp.U):
+ This variable conditionally defines HAS_MKOSTEMP if mkostemp() is
+ available to exclusively create and open a uniquely named (with a
+ suffix) temporary file.
+
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
This variable conditionally defines HAS_NAN if nan() is
available to generate NaN.
+d_nanosleep (d_nanosleep.U):
+ This variable conditionally defines HAS_NANOSLEEP
+ if nanosleep() is available to sleep with 1E-9 sec accuracy.
+
d_ndbm (i_ndbm.U):
This variable conditionally defines the HAS_NDBM symbol, which
indicates that both the ndbm.h include file and an appropriate ndbm
indicates to the C program that the pipe() routine is available
to create an inter-process channel.
+d_pipe2 (d_pipe2.U):
+ This variable conditionally defines the HAS_PIPE2 symbol, which
+ indicates to the C program that the pipe2() 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
This variable conditionally defines HAS_SETLOCALE if setlocale() is
available to handle locale-specific ctype implementations.
+d_setlocale_accepts_any_locale_name (d_setlocale.U):
+ This variable conditionally defines SETLOCALE_ACCEPTS_ANY_LOCALE_NAME
+ if setlocale() accepts any locale name.
+
d_setlocale_r (d_setlocale_r.U):
This variable conditionally defines the HAS_SETLOCALE_R symbol,
which indicates to the C program that the setlocale_r()
of architecture-dependent library files for $package. If
$sitearch is the same as $archlib, then this is set to undef.
+d_snprintf (d_snprintf.U):
+ This variable conditionally defines the HAS_SNPRINTF symbol, which
+ indicates to the C program that the snprintf () library function
+ is available.
+
d_sockaddr_in6 (d_socket.U):
This variable conditionally defines the HAS_SOCKADDR_IN6 symbol, which
indicates the availability of a struct sockaddr_in6.
This variable conditionally defines the HAS_STRLCPY symbol, which
indicates to the C program that the strlcpy () routine is available.
+d_strnlen (d_strnlen.U):
+ This variable conditionally defines the HAS_STRNLEN symbol, which
+ indicates to the C program that the strnlen () 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
to provide better numeric string conversion than atof().
+d_strtod_l (d_strtod_l.U):
+ This variable conditionally defines the HAS_STRTOD_L symbol, which
+ indicates to the C program that the strtod_l() routine is available.
+
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
This variable conditionally defines the HAS_STRTOLD symbol, which
indicates to the C program that the strtold() routine is available.
+d_strtold_l (d_strtold_l.U):
+ This variable conditionally defines the HAS_STRTOLD_L symbol, which
+ indicates to the C program that the strtold_l() 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.
indicates to the C program that the tgamma() routine is available
for the gamma function. See also d_lgamma.
+d_thread_safe_nl_langinfo_l (d_nl_langinfo_l.U):
+ This variable contains the eventual value of the
+ HAS_THREAD_SAFE_NL_LANGINFO_L symbol, which indicates if the
+ nl_langinfo_l() function exists and is thread-safe.
+
d_time (d_time.U):
This variable conditionally defines the HAS_TIME symbol, which indicates
that the time() routine exists. The time() routine is normally
which indicates to the C program that the tmpnam_r()
routine is available.
+d_towlower (d_towlower.U):
+ This variable conditionally defines the HAS_TOWLOWER symbol, which
+ indicates to the C program that the towlower() routine is available.
+
+d_towupper (d_towupper.U):
+ This variable conditionally defines the HAS_TOWUPPER symbol, which
+ indicates to the C program that the towupper() routine is available.
+
d_trunc (d_trunc.U):
This variable conditionally defines the HAS_TRUNC symbol, which
indicates to the C program that the trunc() routine is available
Otherwise (on USG probably), it is enough to close the standard file
descriptors and do a setpgrp().
+d_vsnprintf (d_snprintf.U):
+ This variable conditionally defines the HAS_VSNPRINTF symbol, which
+ indicates to the C program that the vsnprintf () library function
+ is available.
+
d_wait4 (d_wait4.U):
This variable conditionally defines the HAS_WAIT4 symbol, which
indicates the wait4() routine is available.
indicates to the C program that <stdint.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_stdlib (i_stdlib.U):
+ This variable unconditionally defines the I_STDLIB symbol.
i_sunmath (i_sunmath.U):
This variable conditionally defines the I_SUNMATH symbol, and indicates
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>.
+ 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,
to be included.
i_time (i_time.U):
- This variable conditionally defines I_TIME, which indicates
+ This variable unconditionally 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_VFORK symbol, and indicates
whether a C program should include vfork.h.
+i_wchar (i_wchar.U):
+ This variable conditionally defines the I_WCHAR symbol,
+ that indicates whether a C program may include <wchar.h>.
+
+i_wctype (i_wctype.U):
+ This variable conditionally defines the I_WCTYPE symbol,
+ that indicates whether a C program may include <wctype.h>.
+
i_xlocale (d_newlocale.U):
This symbol, if defined, indicates to the C program that it should
include <xlocale.h> to get uselocale() and its friends
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) or -Wl,-rpath
$archlibexp/CORE (Linux).
REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
is defined.
-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 the empty string and is not useful.
KERN_PROC_PATHNAME to get a full path for the executable, and hence
convert $^X to an absolute path.
+uselanginfo (Extensions.U):
+ This variable holds either 'true' or 'false' to indicate
+ whether the I18N::Langinfo extension should be used. The sole
+ use for this currently is to allow an easy mechanism for users to skip
+ this extension from the Configure command line.
+
uselargefiles (uselfs.U):
This variable conditionally defines the USE_LARGE_FILES symbol,
and indicates that large file interfaces should be used when
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