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# duplocale.m4 serial 14 |
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dnl Copyright (C) 2009-2023 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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AC_DEFUN([gl_FUNC_DUPLOCALE], |
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[ |
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AC_REQUIRE([gl_LOCALE_H_DEFAULTS]) |
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AC_REQUIRE([AC_CANONICAL_HOST]) |
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AC_REQUIRE([gl_FUNC_SETLOCALE_NULL]) |
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AC_CHECK_FUNCS_ONCE([duplocale]) |
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if test $ac_cv_func_duplocale = yes; then |
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dnl Check against glibc bug where duplocale crashes. |
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dnl See <https: |
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dnl Also, on AIX 7.1, duplocale(LC_GLOBAL_LOCALE) returns (locale_t)0 with |
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dnl errno set to EINVAL. |
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dnl Also, on NetBSD 7.0, duplocale(LC_GLOBAL_LOCALE) returns a locale that |
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dnl corresponds to the C locale. |
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AC_REQUIRE([gl_LOCALE_H]) |
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if test $HAVE_LOCALE_T = 1; then |
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AC_CHECK_FUNCS_ONCE([snprintf_l nl_langinfo_l]) |
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AC_CACHE_CHECK([whether duplocale(LC_GLOBAL_LOCALE) works], |
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[gl_cv_func_duplocale_works], |
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[AC_RUN_IFELSE( |
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[AC_LANG_SOURCE([[ |
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#include <locale.h> |
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#if HAVE_XLOCALE_H |
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# include <xlocale.h> |
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#endif |
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#if HAVE_SNPRINTF_L |
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# include <stdio.h> |
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#endif |
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#if HAVE_NL_LANGINFO_L |
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# include <langinfo.h> |
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#endif |
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#include <string.h> |
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struct locale_dependent_values |
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{ |
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char numeric[100]; |
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char time[100]; |
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}; |
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int main () |
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{ |
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struct locale_dependent_values expected_result; |
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struct locale_dependent_values result; |
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locale_t loc; |
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setlocale (LC_ALL, "en_US.UTF-8"); |
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setlocale (LC_NUMERIC, "de_DE.UTF-8"); |
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setlocale (LC_TIME, "fr_FR.UTF-8"); |
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#if HAVE_SNPRINTF_L |
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snprintf (expected_result.numeric, sizeof (expected_result.numeric), "%g", 3.5); |
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#endif |
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#if HAVE_NL_LANGINFO_L |
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strcpy (expected_result.time, nl_langinfo (MON_1)); |
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#endif |
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loc = duplocale (LC_GLOBAL_LOCALE); |
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if (!loc) |
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return 1; |
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#if HAVE_SNPRINTF_L |
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snprintf_l (result.numeric, sizeof (result.numeric), loc, "%g", 3.5); |
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#endif |
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#if HAVE_NL_LANGINFO_L |
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strcpy (result.time, nl_langinfo_l (MON_1, loc)); |
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#endif |
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#if HAVE_SNPRINTF_L |
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if (strcmp (result.numeric, expected_result.numeric) != 0) |
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return 2; |
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#endif |
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#if HAVE_NL_LANGINFO_L |
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if (strcmp (result.time, expected_result.time) != 0) |
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return 3; |
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#endif |
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freelocale (loc); |
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return 0; |
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}]])], |
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[gl_cv_func_duplocale_works=yes], |
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[gl_cv_func_duplocale_works=no], |
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[dnl Guess it works except on glibc < 2.12, uClibc, AIX, and NetBSD. |
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case "$host_os" in |
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aix* | netbsd*) gl_cv_func_duplocale_works="guessing no";; |
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*-gnu* | gnu*) |
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AC_EGREP_CPP([Unlucky], [ |
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#include <features.h> |
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#ifdef __GNU_LIBRARY__ |
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#if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 12) |
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Unlucky GNU user |
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#endif |
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#endif |
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#ifdef __UCLIBC__ |
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Unlucky user |
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#endif |
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], |
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[gl_cv_func_duplocale_works="guessing no"], |
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[gl_cv_func_duplocale_works="guessing yes"]) |
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;; |
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*) gl_cv_func_duplocale_works="guessing yes";; |
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esac |
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]) |
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]) |
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case "$gl_cv_func_duplocale_works" in |
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*no) REPLACE_DUPLOCALE=1 ;; |
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esac |
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else |
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dnl In 2019, some versions of z/OS lack the locale_t type and have broken |
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dnl newlocale, duplocale, freelocale functions. In this situation, we |
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dnl cannot use nor override duplocale. |
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HAVE_DUPLOCALE=0 |
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fi |
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else |
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HAVE_DUPLOCALE=0 |
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fi |
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if test $REPLACE_DUPLOCALE = 1; then |
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DUPLOCALE_LIB="$SETLOCALE_NULL_LIB" |
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else |
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DUPLOCALE_LIB= |
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fi |
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dnl DUPLOCALE_LIB is expected to be '-pthread' or '-lpthread' on AIX |
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dnl with gcc or xlc, and empty otherwise. |
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AC_SUBST([DUPLOCALE_LIB]) |
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dnl For backward compatibility. |
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LIB_DUPLOCALE="$DUPLOCALE_LIB" |
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AC_SUBST([LIB_DUPLOCALE]) |
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]) |
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# Prerequisites of lib/duplocale.c. |
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AC_DEFUN([gl_PREREQ_DUPLOCALE], |
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[ |
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: |
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]) |
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