139 lines
4.3 KiB
Plaintext
139 lines
4.3 KiB
Plaintext
# Macros that test various C library quirks
|
|
# config/c-library.m4
|
|
|
|
|
|
# PGAC_VAR_INT_TIMEZONE
|
|
# ---------------------
|
|
# Check if the global variable `timezone' exists. If so, define
|
|
# HAVE_INT_TIMEZONE.
|
|
AC_DEFUN([PGAC_VAR_INT_TIMEZONE],
|
|
[AC_CACHE_CHECK(for int timezone, pgac_cv_var_int_timezone,
|
|
[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <time.h>
|
|
int res;],
|
|
[#ifndef __CYGWIN__
|
|
res = timezone / 60;
|
|
#else
|
|
res = _timezone / 60;
|
|
#endif])],
|
|
[pgac_cv_var_int_timezone=yes],
|
|
[pgac_cv_var_int_timezone=no])])
|
|
if test x"$pgac_cv_var_int_timezone" = xyes ; then
|
|
AC_DEFINE(HAVE_INT_TIMEZONE, 1,
|
|
[Define to 1 if you have the global variable 'int timezone'.])
|
|
fi])# PGAC_VAR_INT_TIMEZONE
|
|
|
|
|
|
# PGAC_STRUCT_TIMEZONE
|
|
# ------------------
|
|
# Figure out how to get the current timezone. If `struct tm' has a
|
|
# `tm_zone' member, define `HAVE_STRUCT_TM_TM_ZONE'. Unlike the
|
|
# standard macro AC_STRUCT_TIMEZONE, we don't check for `tzname[]' if
|
|
# not found, since we don't use it. (We use `int timezone' as a
|
|
# fallback.)
|
|
AC_DEFUN([PGAC_STRUCT_TIMEZONE],
|
|
[AC_CHECK_MEMBERS([struct tm.tm_zone],,,[#include <sys/types.h>
|
|
#include <time.h>
|
|
])
|
|
])# PGAC_STRUCT_TIMEZONE
|
|
|
|
|
|
# PGAC_FUNC_STRERROR_R_INT
|
|
# ---------------------------
|
|
# Check if strerror_r() returns int (POSIX) rather than char * (GNU libc).
|
|
# If so, define STRERROR_R_INT.
|
|
# The result is uncertain if strerror_r() isn't provided,
|
|
# but we don't much care.
|
|
AC_DEFUN([PGAC_FUNC_STRERROR_R_INT],
|
|
[AC_CACHE_CHECK(whether strerror_r returns int,
|
|
pgac_cv_func_strerror_r_int,
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <string.h>],
|
|
[[char buf[100];
|
|
switch (strerror_r(1, buf, sizeof(buf)))
|
|
{ case 0: break; default: break; }
|
|
]])],
|
|
[pgac_cv_func_strerror_r_int=yes],
|
|
[pgac_cv_func_strerror_r_int=no])])
|
|
if test x"$pgac_cv_func_strerror_r_int" = xyes ; then
|
|
AC_DEFINE(STRERROR_R_INT, 1,
|
|
[Define to 1 if strerror_r() returns int.])
|
|
fi
|
|
])# PGAC_FUNC_STRERROR_R_INT
|
|
|
|
|
|
# PGAC_UNION_SEMUN
|
|
# ----------------
|
|
# Check if `union semun' exists. Define HAVE_UNION_SEMUN if so.
|
|
# If it doesn't then one could define it as
|
|
# union semun { int val; struct semid_ds *buf; unsigned short *array; }
|
|
AC_DEFUN([PGAC_UNION_SEMUN],
|
|
[AC_CHECK_TYPES([union semun], [], [],
|
|
[#include <sys/types.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/sem.h>
|
|
])])# PGAC_UNION_SEMUN
|
|
|
|
|
|
# PGAC_STRUCT_SOCKADDR_MEMBERS
|
|
# ----------------------------
|
|
# Check if struct sockaddr and subtypes have 4.4BSD-style length.
|
|
AC_DEFUN([PGAC_STRUCT_SOCKADDR_SA_LEN],
|
|
[AC_CHECK_MEMBERS([struct sockaddr.sa_len], [], [],
|
|
[#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
])])# PGAC_STRUCT_SOCKADDR_MEMBERS
|
|
|
|
|
|
# PGAC_TYPE_LOCALE_T
|
|
# ------------------
|
|
# Check for the locale_t type and find the right header file. macOS
|
|
# needs xlocale.h; standard is locale.h, but glibc <= 2.25 also had an
|
|
# xlocale.h file that we should not use, so we check the standard
|
|
# header first.
|
|
AC_DEFUN([PGAC_TYPE_LOCALE_T],
|
|
[AC_CACHE_CHECK([for locale_t], pgac_cv_type_locale_t,
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
|
|
[#include <locale.h>
|
|
locale_t x;],
|
|
[])],
|
|
[pgac_cv_type_locale_t=yes],
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
|
|
[#include <xlocale.h>
|
|
locale_t x;],
|
|
[])],
|
|
[pgac_cv_type_locale_t='yes (in xlocale.h)'],
|
|
[pgac_cv_type_locale_t=no])])])
|
|
if test "$pgac_cv_type_locale_t" = 'yes (in xlocale.h)'; then
|
|
AC_DEFINE(LOCALE_T_IN_XLOCALE, 1,
|
|
[Define to 1 if `locale_t' requires <xlocale.h>.])
|
|
fi])# PGAC_TYPE_LOCALE_T
|
|
|
|
|
|
# PGAC_FUNC_WCSTOMBS_L
|
|
# --------------------
|
|
# Try to find a declaration for wcstombs_l(). It might be in stdlib.h
|
|
# (following the POSIX requirement for wcstombs()), or in locale.h, or in
|
|
# xlocale.h. If it's in the latter, define WCSTOMBS_L_IN_XLOCALE.
|
|
#
|
|
AC_DEFUN([PGAC_FUNC_WCSTOMBS_L],
|
|
[AC_CACHE_CHECK([for wcstombs_l declaration], pgac_cv_func_wcstombs_l,
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
|
|
[#include <stdlib.h>
|
|
#include <locale.h>],
|
|
[#ifndef wcstombs_l
|
|
(void) wcstombs_l;
|
|
#endif])],
|
|
[pgac_cv_func_wcstombs_l='yes'],
|
|
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
|
|
[#include <stdlib.h>
|
|
#include <locale.h>
|
|
#include <xlocale.h>],
|
|
[#ifndef wcstombs_l
|
|
(void) wcstombs_l;
|
|
#endif])],
|
|
[pgac_cv_func_wcstombs_l='yes (in xlocale.h)'],
|
|
[pgac_cv_func_wcstombs_l='no'])])])
|
|
if test "$pgac_cv_func_wcstombs_l" = 'yes (in xlocale.h)'; then
|
|
AC_DEFINE(WCSTOMBS_L_IN_XLOCALE, 1,
|
|
[Define to 1 if `wcstombs_l' requires <xlocale.h>.])
|
|
fi])# PGAC_FUNC_WCSTOMBS_L
|