| 1 | # duplocale.m4 serial 7 |
| 2 | dnl Copyright (C) 2009-2013 Free Software Foundation, Inc. |
| 3 | dnl This file is free software; the Free Software Foundation |
| 4 | dnl gives unlimited permission to copy and/or distribute it, |
| 5 | dnl with or without modifications, as long as this notice is preserved. |
| 6 | |
| 7 | AC_DEFUN([gl_FUNC_DUPLOCALE], |
| 8 | [ |
| 9 | AC_REQUIRE([gl_LOCALE_H_DEFAULTS]) |
| 10 | AC_REQUIRE([AC_CANONICAL_HOST]) |
| 11 | AC_CHECK_FUNCS_ONCE([duplocale]) |
| 12 | if test $ac_cv_func_duplocale = yes; then |
| 13 | dnl Check against glibc bug where duplocale crashes. |
| 14 | dnl See <http://sourceware.org/bugzilla/show_bug.cgi?id=10969>. |
| 15 | dnl Also, on AIX 7.1, duplocale(LC_GLOBAL_LOCALE) returns (locale_t)0 with |
| 16 | dnl errno set to EINVAL. |
| 17 | AC_REQUIRE([gl_LOCALE_H]) |
| 18 | AC_CACHE_CHECK([whether duplocale(LC_GLOBAL_LOCALE) works], |
| 19 | [gl_cv_func_duplocale_works], |
| 20 | [AC_RUN_IFELSE( |
| 21 | [AC_LANG_SOURCE([[ |
| 22 | #include <locale.h> |
| 23 | #if HAVE_XLOCALE_H |
| 24 | # include <xlocale.h> |
| 25 | #endif |
| 26 | int main () |
| 27 | { |
| 28 | if (duplocale (LC_GLOBAL_LOCALE) == (locale_t)0) |
| 29 | return 1; |
| 30 | return 0; |
| 31 | }]])], |
| 32 | [gl_cv_func_duplocale_works=yes], |
| 33 | [gl_cv_func_duplocale_works=no], |
| 34 | [dnl Guess it works except on glibc < 2.12, uClibc, and AIX. |
| 35 | case "$host_os" in |
| 36 | aix*) gl_cv_func_duplocale_works="guessing no";; |
| 37 | *-gnu*) |
| 38 | AC_EGREP_CPP([Unlucky], [ |
| 39 | #include <features.h> |
| 40 | #ifdef __GNU_LIBRARY__ |
| 41 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ < 12) |
| 42 | Unlucky GNU user |
| 43 | #endif |
| 44 | #endif |
| 45 | #ifdef __UCLIBC__ |
| 46 | Unlucky user |
| 47 | #endif |
| 48 | ], |
| 49 | [gl_cv_func_duplocale_works="guessing no"], |
| 50 | [gl_cv_func_duplocale_works="guessing yes"]) |
| 51 | ;; |
| 52 | *) gl_cv_func_duplocale_works="guessing yes";; |
| 53 | esac |
| 54 | ]) |
| 55 | ]) |
| 56 | case "$gl_cv_func_duplocale_works" in |
| 57 | *no) REPLACE_DUPLOCALE=1 ;; |
| 58 | esac |
| 59 | else |
| 60 | HAVE_DUPLOCALE=0 |
| 61 | fi |
| 62 | ]) |
| 63 | |
| 64 | # Prerequisites of lib/duplocale.c. |
| 65 | AC_DEFUN([gl_PREREQ_DUPLOCALE], |
| 66 | [ |
| 67 | : |
| 68 | ]) |