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# assert-h.m4
dnl Copyright (C) 2011-2021 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.
dnl From Paul Eggert.
AC_DEFUN([gl_ASSERT_H],
[
ASSERT_H=
AC_CACHE_CHECK([for static_assert], [gl_cv_static_assert],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#include <assert.h>
static_assert (2 + 2 == 4, "arithmetic doesn't work");
static_assert (2 + 2 == 4);
]],
[[
static_assert (sizeof (char) == 1, "sizeof doesn't work");
static_assert (sizeof (char) == 1);
]])],
[gl_cv_static_assert=yes],
[gl_cv_static_assert=no])])
if test $gl_cv_static_assert = no; then
ASSERT_H=assert.h
gl_NEXT_HEADERS([assert.h])
fi
AC_SUBST([ASSERT_H])
AM_CONDITIONAL([GL_GENERATE_ASSERT_H], [test -n "$ASSERT_H"])
])
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