-# threadlib.m4 serial 5 (gettext-0.18)
+# threadlib.m4 serial 6 (gettext-0.18.2)
dnl Copyright (C) 2005-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
# groks <pthread.h>. cc also understands the flag -pthread, but
# we don't use it because 1. gcc-2.95 doesn't understand -pthread,
# 2. putting a flag into CPPFLAGS that has an effect on the linker
- # causes the AC_TRY_LINK test below to succeed unexpectedly,
+ # causes the AC_LINK_IFELSE test below to succeed unexpectedly,
# leading to wrong values of LIBTHREAD and LTLIBTHREAD.
CPPFLAGS="$CPPFLAGS -D_REENTRANT"
;;
[gl_cv_have_weak],
[gl_cv_have_weak=no
dnl First, test whether the compiler accepts it syntactically.
- AC_TRY_LINK([extern void xyzzy ();
-#pragma weak xyzzy], [xyzzy();], [gl_cv_have_weak=maybe])
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[extern void xyzzy ();
+#pragma weak xyzzy]],
+ [[xyzzy();]])],
+ [gl_cv_have_weak=maybe])
if test $gl_cv_have_weak = maybe; then
dnl Second, test whether it actually works. On Cygwin 1.7.2, with
dnl gcc 4.3, symbols declared weak always evaluate to the address 0.
- AC_TRY_RUN([
+ AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[
#include <stdio.h>
#pragma weak fputs
int main ()
{
return (fputs == NULL);
-}], [gl_cv_have_weak=yes], [gl_cv_have_weak=no],
+}]])],
+ [gl_cv_have_weak=yes],
+ [gl_cv_have_weak=no],
[dnl When cross-compiling, assume that only ELF platforms support
dnl weak symbols.
AC_EGREP_CPP([Extensible Linking Format],
# Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
# in libc. IRIX 6.5 has the first one in both libc and libpthread, but
# the second one only in libpthread, and lock.c needs it.
- AC_TRY_LINK([#include <pthread.h>],
- [pthread_mutex_lock((pthread_mutex_t*)0);
- pthread_mutexattr_init((pthread_mutexattr_t*)0);],
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <pthread.h>]],
+ [[pthread_mutex_lock((pthread_mutex_t*)0);
+ pthread_mutexattr_init((pthread_mutexattr_t*)0);]])],
[gl_have_pthread=yes])
# Test for libpthread by looking for pthread_kill. (Not pthread_self,
# since it is defined as a macro on OSF/1.)
gl_have_solaristhread=
gl_save_LIBS="$LIBS"
LIBS="$LIBS -lthread"
- AC_TRY_LINK([#include <thread.h>
-#include <synch.h>],
- [thr_self();],
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+#include <thread.h>
+#include <synch.h>
+ ]],
+ [[thr_self();]])],
[gl_have_solaristhread=yes])
LIBS="$gl_save_LIBS"
if test -n "$gl_have_solaristhread"; then
gl_have_pth=
gl_save_LIBS="$LIBS"
LIBS="$LIBS -lpth"
- AC_TRY_LINK([#include <pth.h>], [pth_self();], [gl_have_pth=yes])
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([[#include <pth.h>]], [[pth_self();]])],
+ [gl_have_pth=yes])
LIBS="$gl_save_LIBS"
if test -n "$gl_have_pth"; then
gl_threads_api=pth