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-rw-r--r--build-aux/m4/ax_check_preproc_flag.m433
1 files changed, 6 insertions, 27 deletions
diff --git a/build-aux/m4/ax_check_preproc_flag.m4 b/build-aux/m4/ax_check_preproc_flag.m4
index ca1d5ee2b6..e43560fbd3 100644
--- a/build-aux/m4/ax_check_preproc_flag.m4
+++ b/build-aux/m4/ax_check_preproc_flag.m4
@@ -1,5 +1,5 @@
# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_check_preproc_flag.html
+# https://www.gnu.org/software/autoconf-archive/ax_check_preproc_flag.html
# ===========================================================================
#
# SYNOPSIS
@@ -29,33 +29,12 @@
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
#
-# 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception, the respective Autoconf Macro's copyright owner
-# gives unlimited permission to copy, distribute and modify the configure
-# scripts that are the output of Autoconf when processing the Macro. You
-# need not follow the terms of the GNU General Public License when using
-# or distributing such scripts, even though portions of the text of the
-# Macro appear in them. The GNU General Public License (GPL) does govern
-# all other use of the material that constitutes the Autoconf Macro.
-#
-# This special exception to the GPL applies to versions of the Autoconf
-# Macro released by the Autoconf Archive. When you make and distribute a
-# modified version of the Autoconf Macro, you may extend this special
-# exception to the GPL to apply to your modified version as well.
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
-#serial 4
+#serial 6
AC_DEFUN([AX_CHECK_PREPROC_FLAG],
[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF