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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 "$version"
] libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev for cam: [optional] libevent-dev for qcam: [optional] qtbase5-dev libqt5core5a libqt5gui5 libqt5widgets5 qttools5-dev-tools libtiff-dev for tracing with lttng: [optional] liblttng-ust-dev python3-jinja2 lttng-tools for android: [optional] libexif libjpeg libyaml Using GStreamer plugin ~~~~~~~~~~~~~~~~~~~~~~ To use GStreamer plugin from source tree, set the following environment so that GStreamer can find it. export GST_PLUGIN_PATH=$(pwd)/build/src/gstreamer The debugging tool ``gst-launch-1.0`` can be used to construct a pipeline and test it. The following pipeline will stream from the camera named "Camera 1" onto the default video display element on your system. .. code:: gst-launch-1.0 libcamerasrc camera-name="Camera 1" ! videoconvert ! autovideosink .. section-end-getting-started Troubleshooting ~~~~~~~~~~~~~~~ Several users have reported issues with meson installation, crux of the issue is a potential version mismatch between the version that root uses, and the version that the normal user uses. On calling `ninja -C build`, it can't find the build.ninja module. This is a snippet of the error message. :: ninja: Entering directory `build' ninja: error: loading 'build.ninja': No such file or directory This can be solved in two ways: 1) Don't install meson again if it is already installed system-wide. 2) If a version of meson which is different from the system-wide version is already installed, uninstall that meson using pip3, and install again without the --user argument.