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# strerror.m4 serial 8
dnl Copyright (C) 2002, 2007-2008 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_STRERROR],
[
AC_REQUIRE([gl_FUNC_STRERROR_SEPARATE])
if test $gl_cv_func_working_strerror = no; then
AC_LIBOBJ([strerror])
AC_DEFINE_UNQUOTED([REPLACE_STRERROR], [$REPLACE_STRERROR],
[Define this to 1 if strerror is broken.])
fi
])
# Like gl_FUNC_STRERROR, except prepare for separate compilation (no AC_LIBOBJ).
AC_DEFUN([gl_FUNC_STRERROR_SEPARATE],
[
AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
AC_CACHE_CHECK([for working strerror function],
[gl_cv_func_working_strerror],
[AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <string.h>
]],
[[return !*strerror (-2);]])],
[gl_cv_func_working_strerror=yes],
[gl_cv_func_working_strerror=no],
[dnl Assume crossbuild works if it compiles.
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <string.h>
]],
[[return !*strerror (-2);]])],
[gl_cv_func_working_strerror=yes],
[gl_cv_func_working_strerror=no])])])
if test $gl_cv_func_working_strerror = no ; then
REPLACE_STRERROR=1
gl_PREREQ_STRERROR
fi
])
# Prerequisites of lib/strerror.c.
AC_DEFUN([gl_PREREQ_STRERROR], [
AC_CHECK_DECLS([strerror])
])
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