| # duplocale.m4 serial 12 |
| dnl Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
| |
| AC_DEFUN([gl_FUNC_DUPLOCALE], |
| [ |
| AC_REQUIRE([gl_LOCALE_H_DEFAULTS]) |
| AC_REQUIRE([AC_CANONICAL_HOST]) |
| AC_REQUIRE([gl_FUNC_SETLOCALE_NULL]) |
| AC_CHECK_FUNCS_ONCE([duplocale]) |
| if test $ac_cv_func_duplocale = yes; then |
| dnl Check against glibc bug where duplocale crashes. |
| dnl See <https://sourceware.org/bugzilla/show_bug.cgi?id=10969>. |
| dnl Also, on AIX 7.1, duplocale(LC_GLOBAL_LOCALE) returns (locale_t)0 with |
| dnl errno set to EINVAL. |
| dnl Also, on NetBSD 7.0, duplocale(LC_GLOBAL_LOCALE) returns a locale that |
| dnl corresponds to the C locale. |
| AC_REQUIRE([gl_LOCALE_H]) |
| if test $HAVE_LOCALE_T = 1; then |
| AC_CHECK_FUNCS_ONCE([snprintf_l nl_langinfo_l]) |
| AC_CACHE_CHECK([whether duplocale(LC_GLOBAL_LOCALE) works], |
| [gl_cv_func_duplocale_works], |
| [AC_RUN_IFELSE( |
| [AC_LANG_SOURCE([[ |
| #include <locale.h> |
| #if HAVE_XLOCALE_H |
| # include <xlocale.h> |
| #endif |
| #if HAVE_SNPRINTF_L |
| # include <stdio.h> |
| #endif |
| #if HAVE_NL_LANGINFO_L |
| # include <langinfo.h> |
| #endif |
| #include <string.h> |
| struct locale_dependent_values |
| { |
| char numeric[100]; |
| char time[100]; |
| }; |
| int main () |
| { |
| struct locale_dependent_values expected_result; |
| struct locale_dependent_values result; |
| locale_t loc; |
| setlocale (LC_ALL, "en_US.UTF-8"); |
| setlocale (LC_NUMERIC, "de_DE.UTF-8"); |
| setlocale (LC_TIME, "fr_FR.UTF-8"); |
| #if HAVE_SNPRINTF_L |
| snprintf (expected_result.numeric, sizeof (expected_result.numeric), "%g", 3.5); |
| #endif |
| #if HAVE_NL_LANGINFO_L |
| strcpy (expected_result.time, nl_langinfo (MON_1)); |
| #endif |
| loc = duplocale (LC_GLOBAL_LOCALE); |
| if (!loc) |
| return 1; |
| #if HAVE_SNPRINTF_L |
| snprintf_l (result.numeric, sizeof (result.numeric), loc, "%g", 3.5); |
| #endif |
| #if HAVE_NL_LANGINFO_L |
| strcpy (result.time, nl_langinfo_l (MON_1, loc)); |
| #endif |
| #if HAVE_SNPRINTF_L |
| if (strcmp (result.numeric, expected_result.numeric) != 0) |
| return 2; |
| #endif |
| #if HAVE_NL_LANGINFO_L |
| if (strcmp (result.time, expected_result.time) != 0) |
| return 3; |
| #endif |
| freelocale (loc); |
| return 0; |
| }]])], |
| [gl_cv_func_duplocale_works=yes], |
| [gl_cv_func_duplocale_works=no], |
| [dnl Guess it works except on glibc < 2.12, uClibc, AIX, and NetBSD. |
| case "$host_os" in |
| aix* | netbsd*) gl_cv_func_duplocale_works="guessing no";; |
| *-gnu* | gnu*) |
| AC_EGREP_CPP([Unlucky], [ |
| #include <features.h> |
| #ifdef __GNU_LIBRARY__ |
| #if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 12) |
| Unlucky GNU user |
| #endif |
| #endif |
| #ifdef __UCLIBC__ |
| Unlucky user |
| #endif |
| ], |
| [gl_cv_func_duplocale_works="guessing no"], |
| [gl_cv_func_duplocale_works="guessing yes"]) |
| ;; |
| *) gl_cv_func_duplocale_works="guessing yes";; |
| esac |
| ]) |
| ]) |
| case "$gl_cv_func_duplocale_works" in |
| *no) REPLACE_DUPLOCALE=1 ;; |
| esac |
| else |
| dnl In 2019, some versions of z/OS lack the locale_t type and have broken |
| dnl newlocale, duplocale, freelocale functions. In this situation, we |
| dnl cannot use nor override duplocale. |
| HAVE_DUPLOCALE=0 |
| fi |
| else |
| HAVE_DUPLOCALE=0 |
| fi |
| if test $REPLACE_DUPLOCALE = 1; then |
| LIB_DUPLOCALE="$LIB_SETLOCALE_NULL" |
| else |
| LIB_DUPLOCALE= |
| fi |
| dnl LIB_DUPLOCALE is expected to be '-pthread' or '-lpthread' on AIX |
| dnl with gcc or xlc, and empty otherwise. |
| AC_SUBST([LIB_DUPLOCALE]) |
| ]) |
| |
| # Prerequisites of lib/duplocale.c. |
| AC_DEFUN([gl_PREREQ_DUPLOCALE], |
| [ |
| : |
| ]) |