libcamera/utils/gen-version.sh
Niklas Söderlund f32261f257 libcamera: Add build time to version string for dirty builds
Having the build time in the version string is useful when building from
a dirty worktree and deploying to targets as a quick way to identify the
binary has been deployed successfully.

Before this change the version string is reported as

    libcamera v0.0.0+1692-aaff196a-dirty

While with this change the version string is reported as

    libcamera v0.0.0+1692-aaff196a-dirty (2020-08-05T22:42:18+02:00)

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-08-06 16:20:15 +02:00

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Generate a version string using git describe
build_dir="$1"
# Bail out if the directory isn't under git control
src_dir=$(git rev-parse --git-dir 2>&1) || exit 1
src_dir=$(readlink -f "$src_dir/..")
# Get a short description from the tree.
version=$(git describe --abbrev=8 --match "v[0-9]*" 2>/dev/null)
if [ -z "$version" ]
then
# Handle an un-tagged repository
sha=$(git describe --abbrev=8 --always 2>/dev/null)
commits=$(git log --oneline | wc -l 2>/dev/null)
version="v0.0.0-$commits-g$sha"
fi
# Append a '-dirty' suffix if the working tree is dirty. Prevent false
# positives due to changed timestamps by running git update-index.
if [ -z "$build_dir" ] || (echo "$build_dir" | grep -q "$src_dir")
then
git update-index --refresh > /dev/null 2>&1
fi
git diff-index --quiet HEAD || version="$version-dirty ($(date --iso-8601=seconds))"
# Replace first '-' with a '+' to denote build metadata, strip the 'g' in from
# of the git SHA1 and remove the initial 'v'.
version=$(echo "$version" | sed -e 's/-/+/' | sed -e 's/-g/-/' | cut -c 2-)
echo "$version"