Meson knows to generate distribution archives via `meson dist`. Despite
generating the archive itself, this target also knows to compile and
execute tests from that archive, which helps to ensure that the result
is an adequate drop-in replacement for the versioned project.
While this already works as-is, one omission is that we don't propagate
the commit that this is built from into the resulting archive. This can
be fixed though by adding a distribution script that propagates the
version into the "version" file, which GIT-VERSION-GEN knows to read if
present.
Use GIT-VERSION-GEN itself to populate that file. There are two smallish
gotchas:
- The script is executed in the build directory, not in the directory
where we generate the archive. The target directory is propagated
via the "MESON_DIST_ROOT" environment variable, but because we don't
use a shell to execute GIT-VERSION-GEN we cannot populate the envvar
into its arguments. We thus adapt GIT-VERSION-GEN to handle this for
us.
- We use the "GIT-VERSION-FILE.in" template to generate the version,
which contains a "GIT_VERSION=" prefix that we need to strip after
reading the "version" file. We could avoid this extra logic if we
used a template that only had the `@GIT_VERSION@` placeholder, but
it would require us to add one more template file.
Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
---
GIT-VERSION-GEN | 7 ++++++-
meson.build | 12 ++++++++++++
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 95d7d41d233450774a6580c0de332e7b8f69eb4e..1f0fb4098da392511f02a34cdcc84f3889771001 100755
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -19,6 +19,11 @@ then
exit 1
fi
+if test -n "$OUTPUT" && test -n "$MESON_DIST_ROOT"
+then
+ OUTPUT="$MESON_DIST_ROOT/$OUTPUT"
+fi
+
DEF_VER=$(cat "$SOURCE_DIR"/GIT-VERSION)
# Protect us from reading Git version information outside of the Git directory
@@ -33,7 +38,7 @@ then
# then try git-describe, then default.
if test -f "$SOURCE_DIR"/version
then
- VN=$(cat "$SOURCE_DIR"/version) || VN="$DEF_VER"
+ VN=$(cat "$SOURCE_DIR"/version) && VN=${VN#GIT_VERSION=} || VN="$DEF_VER"
elif {
test -d "$SOURCE_DIR/.git" ||
test -d "${GIT_DIR:-.git}" ||
diff --git a/meson.build b/meson.build
index 0b559215e4f105ac87bd580d755f88c32b7b36ca..771bdded484a0c0e8638e7c6555e3f4e09e64025 100644
--- a/meson.build
+++ b/meson.build
@@ -1940,6 +1940,18 @@ devenv.set('GIT_BUILD_DIR', meson.current_build_dir())
devenv.prepend('PATH', meson.current_build_dir() / 'bin-wrappers')
meson.add_devenv(devenv)
+# Generate the 'version' file in the distribution tarball. This is used via
+# `meson dist -C <builddir>` to populate the source archive with the Git
+# version that the archive is being generated from. GIT-VERSION-GEN knows to
+# pick up this file.
+meson.add_dist_script(
+ shell,
+ meson.current_source_dir() / 'GIT-VERSION-GEN',
+ meson.current_source_dir(),
+ meson.current_source_dir() / 'GIT-VERSION-FILE.in',
+ 'version',
+)
+
summary({
'curl': curl.found(),
'expat': expat.found(),
--
2.48.0.257.gd3603152ad.dirty
