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#serial 1003
# Experimental replacement for the function in the latest CVS autoconf.
# Use with the error.c file in ../lib.
# Copyright 2001 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
undefine([AC_FUNC_STRERROR_R])
# AC_FUNC_STRERROR_R
# ------------------
AC_DEFUN([AC_FUNC_STRERROR_R],
[AC_CHECK_DECLS([strerror_r])
AC_CHECK_FUNCS([strerror_r])
AC_CACHE_CHECK([whether strerror_r returns char *],
ac_cv_func_strerror_r_char_p,
[
ac_cv_func_strerror_r_char_p=no
if test $ac_cv_have_decl_strerror_r = yes; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
[[
char buf[100];
char x = *strerror_r (0, buf, sizeof buf);
char *p = strerror_r (0, buf, sizeof buf);
]])],
ac_cv_func_strerror_r_char_p=yes)
else
# strerror_r is not declared. Choose between
# systems that have relatively inaccessible declarations for the
# function. BeOS and DEC UNIX 4.0 fall in this category, but the
# former has a strerror_r that returns char*, while the latter
# has a strerror_r that returns `int'.
# This test should segfault on the DEC system.
AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
extern char *strerror_r ();],
[[char buf[100];
char x = *strerror_r (0, buf, sizeof buf);
exit (!isalpha (x));]])],
ac_cv_func_strerror_r_char_p=yes, , :)
fi
])
if test $ac_cv_func_strerror_r_char_p = yes; then
AC_DEFINE([STRERROR_R_CHAR_P], 1,
[Define to 1 if strerror_r returns char *.])
fi
])# AC_FUNC_STRERROR_R
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