| AC_DEFUN([AX_DETECT_GIT_HEAD], [ |
| AC_SUBST(GIT_HEAD_ID) |
| AC_SUBST(GIT_HEAD) |
| AC_SUBST(GIT_HEAD_VERSION) |
| if test -f $srcdir/.git/HEAD; then |
| GIT_HEAD="$srcdir/.git/index" |
| GIT_REPO="$srcdir/.git" |
| GIT_HEAD_ID=`GIT_DIR=$GIT_REPO git describe` |
| elif test -f $srcdir/GIT_HEAD_ID; then |
| GIT_HEAD_ID=`cat $srcdir/GIT_HEAD_ID` |
| else |
| mysrcdir=`(cd $srcdir; pwd)` |
| head=`basename $mysrcdir | sed -e 's/.*-//'` |
| head2=`echo $head | sed -e 's/[^0-9a-f]//'` |
| head3=`echo $head2 | sed -e 's/........................................//'` |
| if test "x$head3" = "x" -a "x$head" = "x$head2"; then |
| GIT_HEAD_ID="$head" |
| else |
| GIT_HEAD_ID="UNKNOWN" |
| fi |
| fi |
| if test -z "$GIT_REPO" ; then |
| GIT_HEAD_VERSION="$GIT_HEAD_ID" |
| else |
| GIT_HEAD_VERSION="\`GIT_DIR=$GIT_REPO git describe\`" |
| fi |
| ]) |