Put the git version into all executables.

[paraslash.git] / GIT-VERSION-GEN

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
new file mode 100755 (executable)
index 0000000..a64d796
--- /dev/null
+++ b/GIT-VERSION-GEN
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+if test $# -ne 1; then
+       echo >&2 "usage: $0 <version file>"
+       exit 1
+fi
+
+GVF="$1"
+DEF_VER="unnamed_version"
+
+LF='
+'
+
+# First see if there is a version file (included in release tarballs),
+# then try git-describe, then default.
+if test -f VERSION
+then
+       VN=$(cat VERSION) || VN="$DEF_VER"
+elif test -d .git -o -f .git &&
+       VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
+       case "$VN" in
+       *$LF*) (exit 1) ;;
+       v[0-9]*)
+               git update-index -q --refresh
+               test -z "$(git diff-index --name-only HEAD --)" ||
+               VN="$VN-dirty" ;;
+       esac
+then
+       VN=$(echo "$VN" | sed -e 's/-/./g');
+else
+       VN="$DEF_VER"
+fi
+
+VN=$(expr "$VN" : v*'\(.*\)')
+
+if test -r $GVF
+then
+       VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)
+else
+       VC=unset
+fi
+test "$VN" = "$VC" || {
+       echo >&2 "GIT_VERSION = $VN"
+       echo "GIT_VERSION = $VN" >$GVF
+}