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71 lines
1.9 KiB
Plaintext
71 lines
1.9 KiB
Plaintext
# duplocale.m4 serial 8
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dnl Copyright (C) 2009-2017 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_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 <http://sourceware.org/bugzilla/show_bug.cgi?id=10969>.
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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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AC_REQUIRE([gl_LOCALE_H])
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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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int main ()
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{
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locale_t loc = duplocale (LC_GLOBAL_LOCALE);
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if (!loc)
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return 1;
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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, and AIX.
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case "$host_os" in
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aix*) gl_cv_func_duplocale_works="guessing no";;
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*-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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HAVE_DUPLOCALE=0
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fi
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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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