Hash :
85599643
Author :
Date :
2025-01-22T21:25:27
New module 'version-stamp'. * m4/version-stamp.m4: New file. * modules/version-stamp: New file.
# version-stamp.m4
# serial 1
dnl Copyright (C) 2025 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License. As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.
# Manages a stamp file, that keeps track when $(VERSION) was last changed.
#
# gl_CONFIG_VERSION_STAMP
# needs to be invoked near the end of the package's top-level configure.ac,
# before AC_OUTPUT.
# It makes sure that during the build,
# - $(top_srcdir)/.version exists, and
# - when $(VERSION) is changed, $(top_srcdir)/.version gets modified.
#
# $(top_srcdir)/.version is a stamp file. Its contents wouldn't matter,
# except that for detecting the change, we store the value of $(VERSION)
# in it (but we could just as well store it in a different file).
AC_DEFUN([gl_CONFIG_VERSION_STAMP],
[
AC_CONFIG_COMMANDS([version-timestamp],
[if test -f "$ac_top_srcdir/.version" \
&& test `cat "$ac_top_srcdir/.version"` = "$gl_version"; then
# The value of $(VERSION) is the same as last time.
:
else
# The value of $(VERSION) has changed. Update the stamp.
echo "$gl_version" > "$ac_top_srcdir/.version"
fi
],
[gl_version="$VERSION"])
])