feat(builder): auto-compile GSettings schemas during build

[123123213weqw]

Summary

Resolves #679.

Applications that depend on gsettings require a compiled gschemas.compiled binary in share/glib-2.0/schemas to function at runtime. Until now linglong only ran glib-compile-schemas at install time (OSTreeRepo::updateSharedInfo), which forced the tool to be present on every end-user machine.

This PR makes ll-builder automatically compile GSettings schemas at build time so the compiled binary is shipped inside the package.

Changes

• misc/libexec/linglong/builder/helper/compile-schemas.sh (new) — helper script that:
  • Does nothing when $PREFIX/share/glib-2.0/schemas does not exist (no overhead for apps without gsettings).
  • Skips with a warning when glib-compile-schemas is unavailable.
  • Otherwise runs glib-compile-schemas on the schemas directory.
• misc/CMakeLists.txt — registers the new script in configure_files and the install(PROGRAMS …) list (kept in sorted order alongside the other builder helpers).
• libs/linglong/src/linglong/builder/linglong_builder.cpp (generateEntryScript) — appends compile-schemas.sh to the POST BUILD PROCESS section of the generated entry.sh, immediately after the user build script and optional symbol stripping. The call runs unconditionally (not gated on skipStripSymbols).

How it works

During ll-builder build, the generated entry script now ends with:

# POST BUILD PROCESS
<builder-helper>/symbols-strip.sh   # only when strip is enabled
<builder-helper>/compile-schemas.sh  # always; no-op without schemas

The script runs inside the build container where glib-compile-schemas is part of the glib development packages, so no extra host dependency is introduced.

Verification

• bash -n compile-schemas.sh — syntax OK.
• Manual functional tests:
  • No schemas dir → exit 0, no output.
  • Schemas dir exists, glib-compile-schemas missing → warning on stderr, exit 0.
  • Schemas dir exists, glib-compile-schemas present → gschemas.compiled created, exit 0.
• git diff --check — no whitespace errors.

Full CMake build and CTest could not be executed in this environment (no compiler toolchain installed); the change is limited to a new shell script, two CMake list entries, and a three-line C++ edit that follows existing patterns.

[deepin-ci-robot]

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This pull-request has been approved by: 123123213weqw

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[deepin-ci-robot]

Hi @123123213weqw. Thanks for your PR.

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[gemini-code-assist]

Code Review

This pull request introduces automatic compilation of GSettings schemas during the build process by adding a new helper script, compile-schemas.sh, and integrating it into the post-build process. Feedback suggests optimizing the helper script to check for the actual presence of .gschema.xml files before verifying the existence of glib-compile-schemas, which prevents false-positive warnings when no schemas are present.

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[gemini-code-assist]

If the $schema_dir directory exists but contains no .gschema.xml files, running glib-compile-schemas is unnecessary and might trigger warnings or errors. Furthermore, if glib-compile-schemas is missing, a false-positive warning will be printed even if there are no schemas to compile.

We can use Bash's nullglob to check if there are actually any .gschema.xml files present before proceeding.

Suggested change

	if [ ! -d "$schema_dir" ]; then
	exit 0
	fi
	if [ ! -d "$schema_dir" ]; then
	exit 0
	fi
	shopt -s nullglob
	schemas=("$schema_dir"/*.gschema.xml)
	if [ ${#schemas[@]} -eq 0 ]; then
	exit 0
	fi

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...linglong/src/linglong/builder/linglong_builder.cpp	0.00%	2 Missing ⚠️

Files with missing lines	Coverage Δ
...linglong/src/linglong/builder/linglong_builder.cpp	8.70% <0.00%> (-0.01%)	⬇️

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