rockbox/tools/version.sh
Aidan MacDonald 77f30202d0 tools: detect Git revision correctly in non-default worktrees
In a non-default Git worktree, the .git directory is replaced
by a file containing the path to the real .git directory. This
breaks the version detection logic because it expects .git to
be a directory.

Passing the root of the source tree via "git -C", letting Git
figure out if we're in a repo or not, solves this problem.

Change-Id: I595f1a694258cad490b1a4964f8ae9d51ae76de1
2026-01-27 09:22:31 -05:00

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#!/bin/sh
# __________ __ ___.
# Open \______ \ ____ ____ | | _\_ |__ _______ ___
# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
# \/ \/ \/ \/ \/
# $Id$
#
# Usage: version.sh [source-root]
# Prints the revision of the repository.
#
# The format is rNNNNNNNNNN[M]-YYMMDD
#
# The M indicates the revision has been locally modified
#
# This logic is pulled from the Linux's scripts/setlocalversion (also GPL)
# and tweaked for rockbox.
gitversion() {
# This verifies we are in a git directory
if head=`git -C "$1" rev-parse --verify --short=10 HEAD 2>/dev/null`; then
# Are there uncommitted changes?
export GIT_WORK_TREE="$1"
if git -C "$1" diff --name-only HEAD | read dummy; then
mod="M"
elif git -C "$1" diff --name-only --cached HEAD | read dummy; then
mod="M"
fi
echo "${head}${mod}"
# All done with git
exit
fi
}
#
# First locate the top of the src tree (passed in usually)
#
if [ -n "$1" ]; then TOP=$1; else TOP=..; fi
# setting VERSION var on commandline has precedence
if [ -z $VERSION ]; then
# If the VERSIONFILE exisits we use that
VERSIONFILE=docs/VERSION
if [ -r $TOP/$VERSIONFILE ]; then
VER=`cat $TOP/$VERSIONFILE`;
else
# Ok, we need to derive it from the Version Control system
VER=`gitversion $TOP`
fi
VERSION=$VER-`date -u +%y%m%d`
fi
echo $VERSION