Add write_or_die(), a helper function

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 72201be57c633259e65b435f8623a80e4cdc3e88..14923c973bdcb87aaacb27f98eecc6215d5293b6 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,19 +1,30 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v1.1.GIT
+DEF_VER=v1.4.2.GIT
+
+LF='
+'
 
 # First try git-describe, then see if there is a version file
 # (included in release tarballs), then default
-if VN=$(git-describe --abbrev=4 HEAD 2>/dev/null); then
+if VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
+   case "$VN" in
+   *$LF*) (exit 1) ;;
+   v[0-9]*) : happy ;;
+   esac
+then
        VN=$(echo "$VN" | sed -e 's/-/./g');
-else
+elif test -f version
+then
        VN=$(cat version) || VN="$DEF_VER"
+else
+       VN="$DEF_VER"
 fi
 
 VN=$(expr "$VN" : v*'\(.*\)')
 
-dirty=$(sh -c 'git-diff-index --name-only HEAD' 2>/dev/null) || dirty=
+dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
 case "$dirty" in
 '')
        ;;