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utils: gen-version: Pass the meson source root to the gen-version.sh script

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The gen-version.sh script expects to be called from a git repo, and sets its
src_root variable accordingly. This may not always be the case if it is built
from a tarball source - full support for which is in a future commit.

The MESON_SOURCE_ROOT environnement variable does not get set when called from
the meson vcs_tag() function, but does when called from the run_command()
function, so that cannot be used either.

Instead, explicitly pass the meson source root to the gen-version.sh script.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Naushir Patuck 2021-10-18 10:29:41 +01:00 • committed by Laurent Pinchart
parent 40d9947781
commit 54637a615d
3 changed files with 13 additions and 4 deletions
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3
meson.build
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@ -17,7 +17,8 @@ project('libcamera', 'c', 'cpp',
# git version tag, the build metadata (e.g. +211-c94a24f4) is omitted from
# libcamera_git_version.
libcamera_git_version = run_command('utils/gen-version.sh',
meson.build_root()).stdout().strip()
meson.build_root(),
meson.source_root()).stdout().strip()
if libcamera_git_version == ''
libcamera_git_version = meson.project_version()
endif

4
src/libcamera/meson.build
View file

@ -95,7 +95,9 @@ libcamera_sources += control_sources
gen_version = meson.source_root() / 'utils' / 'gen-version.sh'
version_cpp = vcs_tag(command : [gen_version, meson.build_root()],
# Use vcs_tag() and not configure_file() or run_command(), to ensure that the
# version gets updated with every ninja build and not just at meson setup time.
version_cpp = vcs_tag(command : [gen_version, meson.build_root(), meson.source_root()],
input : 'version.cpp.in',
output : 'version.cpp',
fallback : meson.project_version())

10
utils/gen-version.sh
View file

@ -4,10 +4,16 @@
# Generate a version string using git describe
build_dir="$1"
src_dir="$2"
# Bail out if the directory isn't under git control
src_dir=$(git rev-parse --git-dir 2>&1) || exit 1
src_dir=$(readlink -f "$src_dir/..")
git_dir=$(git rev-parse --git-dir 2>&1) || exit 1
# Derive the source directory from the git directory if not specified.
if [ -z "$src_dir" ]
then
src_dir=$(readlink -f "$git_dir/..")
fi
# Get a short description from the tree.
version=$(git describe --abbrev=8 --match "v[0-9]*" 2>/dev/null)