Diffstat (limited to 'gen-version.sh')
| -rwxr-xr-x | gen-version.sh | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/gen-version.sh b/gen-version.sh new file mode 100755 index 0000000..b493cf5 --- /dev/null +++ b/gen-version.sh @@ -0,0 +1,34 @@ +#!/bin/sh + +# Get version-info specified in Makefile +V=$1 + +# When building from a git repository, derive the version from the most recent +# release tag instead. The result follows Semantic Versioning 2.0.0, using the +# number of commits made since that tag as build metadata, so seven commits +# after the v1.3.1 tag gives "v1.3.1+7", while a build of the tag itself gives +# plain "v1.3.1". Release tags are expected to be named vMAJOR.MINOR.PATCH. +if test "$(git rev-parse --git-dir 2>/dev/null)" = '.git' +then + tag=$(git describe --abbrev=0 --match 'v[0-9]*' HEAD 2>/dev/null) + if test -n "$tag" + then + ahead=$(git rev-list --count "$tag..HEAD" 2>/dev/null) + if test -n "$ahead" && test "$ahead" -gt 0 + then + V="$tag+$ahead" + else + V="$tag" + fi + fi +fi + +new="CGIT_VERSION = $V" +old=$(cat VERSION 2>/dev/null) + +# Exit if VERSION is uptodate +test "$old" = "$new" && exit 0 + +# Update VERSION with new version-info +echo "$new" > VERSION +cat VERSION |