#!/usr/bin/env bash (($# > 1)) && { echo >&2 "usage: $0 []"; exit 1; } GVF="$1" DEF_VER="unnamed_version" LF=' ' # First see if there is a version file (included in release tarballs), # then try git-describe, then default. if [[ -f VERSION ]]; then VN=$(cat VERSION) || VN="$DEF_VER" elif [[ -d .git || -f .git ]] && VN=$(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*'\(.*\)') echo "$VN" [[ -z "$GVF" ]] && exit 0 if [[ -r "$GVF" ]]; then VC=$(sed -e 's/^#define GIT_VERSION "//; s/"$//' < "$GVF") [[ "$VN" == "$VC" ]] && exit 0 fi echo >&2 "new git version: $VN" echo "#define GIT_VERSION \"$VN\"" >$GVF