| # assert-h.m4 |
| dnl Copyright (C) 2011-2020 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"]) |
| ]) |
