2 dnl Copyright (C) 2008-2011 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.
7 AC_DEFUN([gl_FUNC_PERROR],
9 AC_REQUIRE([gl_STDIO_H_DEFAULTS])
10 AC_REQUIRE([gl_HEADER_ERRNO_H])
11 AC_REQUIRE([gl_FUNC_STRERROR_R])
12 if test -n "$ERRNO_H"; then
13 dnl The system's perror() cannot know about the new errno values we add
14 dnl to <errno.h>. Replace it.
17 case ${gl_cv_func_strerror_r_works-unset} in
19 *) dnl The system's perror() probably inherits the bugs in the
20 dnl system's strerror_r(). Replace it.