-# size_max.m4 serial 7
-dnl Copyright (C) 2003, 2005-2006, 2008 Free Software Foundation, Inc.
+# size_max.m4 serial 9
+dnl Copyright (C) 2003, 2005-2006, 2008-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
[
AC_CHECK_HEADERS([stdint.h])
dnl First test whether the system already has SIZE_MAX.
- AC_MSG_CHECKING([for SIZE_MAX])
- AC_CACHE_VAL([gl_cv_size_max], [
+ AC_CACHE_CHECK([for SIZE_MAX], [gl_cv_size_max], [
gl_cv_size_max=
AC_EGREP_CPP([Found it], [
#include <limits.h>
fi
fi
])
- AC_MSG_RESULT([$gl_cv_size_max])
if test "$gl_cv_size_max" != yes; then
AC_DEFINE_UNQUOTED([SIZE_MAX], [$gl_cv_size_max],
[Define as the maximum value of type 'size_t', if the system doesn't define it.])
fi
+ dnl Don't redefine SIZE_MAX in config.h if config.h is re-included after
+ dnl <stdint.h>. Remember that the #undef in AH_VERBATIM gets replaced with
+ dnl #define by AC_DEFINE_UNQUOTED.
+ AH_VERBATIM([SIZE_MAX],
+[/* Define as the maximum value of type 'size_t', if the system doesn't define
+ it. */
+#ifndef SIZE_MAX
+# undef SIZE_MAX
+#endif])
])
dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.