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dnl Copyright 2009,2010 Free Software Foundation, Inc.
dnl
dnl This file is part of GNU Radio
dnl
dnl GNU Radio is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 3, or (at your option)
dnl any later version.
dnl
dnl GNU Radio is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Radio; see the file COPYING. If not, write to
dnl the Free Software Foundation, Inc., 51 Franklin Street,
dnl Boston, MA 02110-1301, USA.
AC_DEFUN([GR_GIT],[
dnl Identify git binary
AC_PATH_PROG([GIT],[git])
dnl If it exists, get either 'git describe' or fallback to current commit
if test x$GIT != x ; then
AC_MSG_CHECKING([existence of git version control directory])
if test -d $srcdir/.git ; then
AC_MSG_RESULT([ok])
AC_MSG_CHECKING([git description of current commit])
if (cd $srcdir && $GIT describe >/dev/null 2>&1); then
GIT_DESCRIBE=`cd $srcdir && $GIT describe --abbrev=8 --long`
# Release candidate tags create an extra -rcX field
case $GIT_DESCRIBE in
*-*-*-*)
GIT_TAG=`echo $GIT_DESCRIBE | cut -f -2 -d '-'`
GIT_SEQNO=`echo $GIT_DESCRIBE | cut -f 3 -d '-'`
GIT_COMMIT=`echo $GIT_DESCRIBE | cut -f 4 -d '-' | cut -f 2- -d 'g'`
;;
*-*-*)
GIT_TAG=`echo $GIT_DESCRIBE | cut -f 1 -d '-'`
GIT_SEQNO=`echo $GIT_DESCRIBE | cut -f 2 -d '-'`
GIT_COMMIT=`echo $GIT_DESCRIBE | cut -f 3 -d '-' | cut -f 2- -d 'g'`
;;
esac
AC_MSG_RESULT([$GIT_DESCRIBE])
else
AC_MSG_RESULT([no tag in history, using current commit])
GIT_TAG=''
GIT_SEQNO=''
GIT_COMMIT=`cd $srcdir && $GIT describe --always --abbrev=8`
fi
else
AC_MSG_RESULT([not found])
fi
AC_SUBST([GIT_DESCRIBE])
AC_SUBST([GIT_TAG])
AC_SUBST([GIT_SEQNO])
AC_SUBST([GIT_COMMIT])
fi
])
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