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- # duplocale.m4 serial 7
- dnl Copyright (C) 2009-2014 Free Software Foundation, Inc.
- dnl This file is free software
- 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_CHECK_FUNCS_ONCE([duplocale])
- if test $ac_cv_func_duplocale = yes
- dnl Check against glibc bug where duplocale crashes.
- dnl See <http://sourceware.org/bugzilla/show_bug.cgi?id=10969>.
- dnl Also, on AIX 7.1, duplocale(LC_GLOBAL_LOCALE) returns (locale_t)0 with
- dnl errno set to EINVAL.
- AC_REQUIRE([gl_LOCALE_H])
- AC_CACHE_CHECK([whether duplocale(LC_GLOBAL_LOCALE) works],
- [gl_cv_func_duplocale_works],
- [AC_RUN_IFELSE(
- [AC_LANG_SOURCE([[
- #include <locale.h>
- #if HAVE_XLOCALE_H
- # include <xlocale.h>
- #endif
- int main ()
- {
- if (duplocale (LC_GLOBAL_LOCALE) == (locale_t)0)
- return 1
- return 0
- }]])],
- [gl_cv_func_duplocale_works=yes],
- [gl_cv_func_duplocale_works=no],
- [dnl Guess it works except on glibc < 2.12, uClibc, and AIX.
- case "$host_os" in
- aix*) gl_cv_func_duplocale_works="guessing no"
- *-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
- HAVE_DUPLOCALE=0
- fi
- ])
- # Prerequisites of lib/duplocale.c.
- AC_DEFUN([gl_PREREQ_DUPLOCALE],
- [
- :
- ])
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