Add license notice for the custom autoconf macros

3 files changed, 123 insertions, 0 deletions

diff --git a/tools/m4/ax_prog_a2x.m4 b/tools/m4/ax_prog_a2x.m4
index e1214810..5695003f 100644
--- a/tools/m4/ax_prog_a2x.m4
+++ b/tools/m4/ax_prog_a2x.m4
@@ -1,3 +1,44 @@
+# SYNOPSIS
+#
+#   AX_PROG_A2X([ACTION-IF-NOT-FOUND])
+#
+# DESCRIPTION
+#
+#   Check whether the a2x command is available on system, and provide
+#   the HAVE_A2X Automake conditional.
+#
+#   ACTION-IF-NOT-FOUND is shell commands to execute on failure.
+#
+# LICENSE
+#
+#   Copyright (c) 2017 Richard Braun <rbraun@sceen.net>
+#
+#   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 <https://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.
+
 AC_DEFUN([AX_PROG_A2X],
          [AC_ARG_VAR([A2X], [path to a2x command])
           AC_CHECK_PROG([A2X], [a2x], [a2x])
diff --git a/tools/m4/ax_prog_asciidoc.m4 b/tools/m4/ax_prog_asciidoc.m4
index fb4f00f9..b251cb68 100644
--- a/tools/m4/ax_prog_asciidoc.m4
+++ b/tools/m4/ax_prog_asciidoc.m4
@@ -1,3 +1,44 @@
+# SYNOPSIS
+#
+#   AX_PROG_ASCIIDOC([ACTION-IF-NOT-FOUND])
+#
+# DESCRIPTION
+#
+#   Check whether the asciidoc command is available on system, and provide
+#   the HAVE_ASCIIDOC Automake conditional.
+#
+#   ACTION-IF-NOT-FOUND is shell commands to execute on failure.
+#
+# LICENSE
+#
+#   Copyright (c) 2017 Richard Braun <rbraun@sceen.net>
+#
+#   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 <https://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.
+
 AC_DEFUN([AX_PROG_ASCIIDOC],
          [AC_ARG_VAR([ASCIIDOC], [path to asciidoc command])
           AC_CHECK_PROG([ASCIIDOC], [asciidoc], [asciidoc])
diff --git a/tools/m4/ax_prog_highlight.m4 b/tools/m4/ax_prog_highlight.m4
index c98316c8..647c6280 100644
--- a/tools/m4/ax_prog_highlight.m4
+++ b/tools/m4/ax_prog_highlight.m4
@@ -1,3 +1,44 @@
+# SYNOPSIS
+#
+#   AX_PROG_HIGHLIGHT([ACTION-IF-NOT-FOUND])
+#
+# DESCRIPTION
+#
+#   Check whether the highlight command is available on system, and provide
+#   the HAVE_HIGHLIGHT Automake conditional.
+#
+#   ACTION-IF-NOT-FOUND is shell commands to execute on failure.
+#
+# LICENSE
+#
+#   Copyright (c) 2017 Richard Braun <rbraun@sceen.net>
+#
+#   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 <https://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.
+
 AC_DEFUN([AX_PROG_HIGHLIGHT],
          [AC_ARG_VAR([HIGHLIGHT], [path to highlight command])
           AC_CHECK_PROG([HIGHLIGHT], [highlight], [highlight])