key: autoconf-macro-exception
short_name: Autoconf macro exception
name: Autoconf macro exception
category: Copyleft Limited
owner: Free Software Foundation (FSF)
homepage_url: https://www.gnu.org/software/autoconf-archive/
notes: |
  this is a variant of the Autonconf exception to the
  GPL 3.0 used in GNU Config config.guess and config.sub
is_exception: yes
spdx_license_key: Autoconf-exception-macro
other_spdx_license_keys:
  - LicenseRef-scancode-autoconf-macro-exception
other_urls:
  - https://github.com/freedesktop/xorg-macros/blob/39f07f7db58ebbf3dcb64a2bf9098ed5cf3d1223/xorg-macros.m4.in
  - https://www.gnu.org/software/autoconf-archive/ax_pthread.html
  - https://launchpad.net/ubuntu/precise/+source/xmltooling/+copyright
text: |
  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 Macro 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.