From 5e45211a64149b3c659b90ff2de6fa982a5a93ed Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 14:17:33 +0200 Subject: Adding upstream version 15.5. Signed-off-by: Daniel Baumann --- config/c-library.m4 | 212 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 212 insertions(+) create mode 100644 config/c-library.m4 (limited to 'config/c-library.m4') diff --git a/config/c-library.m4 b/config/c-library.m4 new file mode 100644 index 0000000..163ad57 --- /dev/null +++ b/config/c-library.m4 @@ -0,0 +1,212 @@ +# 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 +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"$pgac_cv_var_int_timezone" = xyes ; then + AC_DEFINE(HAVE_INT_TIMEZONE, 1, + [Define to 1 if you have the global variable 'int timezone'.]) +fi])# PGAC_VAR_INT_TIMEZONE + + +# PGAC_STRUCT_TIMEZONE +# ------------------ +# Figure out how to get the current timezone. If `struct tm' has a +# `tm_zone' member, define `HAVE_STRUCT_TM_TM_ZONE'. Unlike the +# standard macro AC_STRUCT_TIMEZONE, we don't check for `tzname[]' if +# not found, since we don't use it. (We use `int timezone' as a +# fallback.) +AC_DEFUN([PGAC_STRUCT_TIMEZONE], +[AC_CHECK_MEMBERS([struct tm.tm_zone],,,[#include +#include +]) +])# PGAC_STRUCT_TIMEZONE + + +# PGAC_FUNC_GETTIMEOFDAY_1ARG +# --------------------------- +# Check if gettimeofday() has only one arguments. (Normal is two.) +# If so, define GETTIMEOFDAY_1ARG. +AC_DEFUN([PGAC_FUNC_GETTIMEOFDAY_1ARG], +[AC_CACHE_CHECK(whether gettimeofday takes only one argument, +pgac_cv_func_gettimeofday_1arg, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include ], +[struct timeval *tp; +struct timezone *tzp; +gettimeofday(tp,tzp);])], +[pgac_cv_func_gettimeofday_1arg=no], +[pgac_cv_func_gettimeofday_1arg=yes])]) +if test x"$pgac_cv_func_gettimeofday_1arg" = xyes ; then + AC_DEFINE(GETTIMEOFDAY_1ARG, 1, + [Define to 1 if gettimeofday() takes only 1 argument.]) +fi +AH_VERBATIM(GETTIMEOFDAY_1ARG_, +[@%:@ifdef GETTIMEOFDAY_1ARG +@%:@ define gettimeofday(a,b) gettimeofday(a) +@%:@endif])dnl +])# PGAC_FUNC_GETTIMEOFDAY_1ARG + + +# 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 ], +[[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 +#ifdef HAVE_SYS_IPC_H +#include +#endif +#ifdef HAVE_SYS_SEM_H +#include +#endif])])# PGAC_UNION_SEMUN + + +# PGAC_STRUCT_SOCKADDR_UN +# ----------------------- +# If `struct sockaddr_un' exists, define HAVE_STRUCT_SOCKADDR_UN. +# If it is missing then one could define it. +# (Requires test for !) +AC_DEFUN([PGAC_STRUCT_SOCKADDR_UN], +[AC_CHECK_TYPES([struct sockaddr_un], [], [], +[#include +#ifdef HAVE_SYS_UN_H +#include +#endif +])])# PGAC_STRUCT_SOCKADDR_UN + + +# PGAC_STRUCT_SOCKADDR_STORAGE +# ---------------------------- +# If `struct sockaddr_storage' exists, define HAVE_STRUCT_SOCKADDR_STORAGE. +# If it is missing then one could define it. +AC_DEFUN([PGAC_STRUCT_SOCKADDR_STORAGE], +[AC_CHECK_TYPES([struct sockaddr_storage], [], [], +[#include +#include +])])# PGAC_STRUCT_SOCKADDR_STORAGE + +# PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS +# -------------------------------------- +# Check the members of `struct sockaddr_storage'. We need to know about +# ss_family and ss_len. (Some platforms follow RFC 2553 and call them +# __ss_family and __ss_len.) We also check struct sockaddr's sa_len; +# if we have to define our own `struct sockaddr_storage', this tells us +# whether we need to provide an ss_len field. +AC_DEFUN([PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS], +[AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family, + struct sockaddr_storage.__ss_family, + struct sockaddr_storage.ss_len, + struct sockaddr_storage.__ss_len, + struct sockaddr.sa_len], [], [], +[#include +#include +])])# PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS + + +# PGAC_STRUCT_ADDRINFO +# ----------------------- +# If `struct addrinfo' exists, define HAVE_STRUCT_ADDRINFO. +AC_DEFUN([PGAC_STRUCT_ADDRINFO], +[AC_CHECK_TYPES([struct addrinfo], [], [], +[#include +#include +#include +])])# PGAC_STRUCT_ADDRINFO + + +# 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 also has an +# xlocale.h file that we should not use. +# +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_t x;], +[])], +[pgac_cv_type_locale_t=yes], +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( +[#include +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" != no; then + AC_DEFINE(HAVE_LOCALE_T, 1, + [Define to 1 if the system has the type `locale_t'.]) +fi +if test "$pgac_cv_type_locale_t" = 'yes (in xlocale.h)'; then + AC_DEFINE(LOCALE_T_IN_XLOCALE, 1, + [Define to 1 if `locale_t' requires .]) +fi])# PGAC_TYPE_LOCALE_T + + +# PGAC_FUNC_WCSTOMBS_L +# -------------------- +# Try to find a declaration for wcstombs_l(). It might be in stdlib.h +# (following the POSIX requirement for wcstombs()), or in locale.h, or in +# xlocale.h. If it's in the latter, define WCSTOMBS_L_IN_XLOCALE. +# +AC_DEFUN([PGAC_FUNC_WCSTOMBS_L], +[AC_CACHE_CHECK([for wcstombs_l declaration], pgac_cv_func_wcstombs_l, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( +[#include +#include ], +[#ifndef wcstombs_l +(void) wcstombs_l; +#endif])], +[pgac_cv_func_wcstombs_l='yes'], +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( +[#include +#include +#include ], +[#ifndef wcstombs_l +(void) wcstombs_l; +#endif])], +[pgac_cv_func_wcstombs_l='yes (in xlocale.h)'], +[pgac_cv_func_wcstombs_l='no'])])]) +if test "$pgac_cv_func_wcstombs_l" = 'yes (in xlocale.h)'; then + AC_DEFINE(WCSTOMBS_L_IN_XLOCALE, 1, + [Define to 1 if `wcstombs_l' requires .]) +fi])# PGAC_FUNC_WCSTOMBS_L -- cgit v1.2.3