internal: support per pkg link flags for test mode

[Young-Flash]

No description provided.

[peter-jerry-ye-code-review]

Analysis of git diff Output

The git diff output provided shows several changes across multiple files, primarily related to the integration of a new feature or enhancement related to native backend compilation using a C compiler (cc). Here are the key observations and potential issues:

1. Dependency Update in Cargo.lock:

   • A new dependency which 6.0.2 is added to the project. This is likely used to check for the presence of the cc compiler in the system's PATH.

2. Removal of RunMode Parameter in get_compiler_flags:

   • The function get_compiler_flags no longer takes the run_mode parameter, which was used to conditionally set compiler flags based on the execution mode (Build, Test, Run). This change suggests that the logic for setting these flags is now handled elsewhere, possibly to centralize the configuration.

3. Centralized Handling of Native Backend Link Flags:

   • The logic for setting native backend link flags (e.g., checking for cc and setting appropriate flags) has been moved to a new function set_native_backend_link_flags in crates/moonutil/src/common.rs. This centralizes the handling of these flags, making the code cleaner and easier to maintain.

4. Struct and Function Changes in crates/moonbuild/src/gen/gen_build.rs and crates/moonbuild/src/gen/gen_runtest.rs:

   • The LinkDepItem struct and related functions have been updated to handle native backend link flags more explicitly. This includes adding new fields and methods to handle native-specific compilation and linking flags.

5. Schema Changes in Package Configuration Files:

   • The schema for package configuration files (pkg.schema.json and pkg_json_schema.html) has been updated to include new fields for native compilation (cc, cc-flags, cc-link-flags). This reflects the addition of new configuration options for native backend compilation.

Suggestions and Potential Issues

1. Validation of cc Presence:

   • The code now checks for the presence of cc in the system's PATH. Ensure that this check is robust and provides clear error messages if cc is not found, as native compilation will fail without it.

2. Consistency in Flag Handling:

   • Ensure that the handling of native backend flags is consistent across all relevant functions and modules. The centralization of flag handling in set_native_backend_link_flags is a good practice, but ensure all parts of the code that need these flags are updated accordingly.

3. Error Handling:

   • The error messages printed when cc or libmoonbitrun.o are not found are clear, but consider adding more detailed logging or options for users to specify alternative compiler paths or configurations.

4. Testing:

   • Thoroughly test the new feature on different platforms and with different compiler configurations to ensure compatibility and robustness.

5. Documentation:

   • Update the documentation to reflect the new native backend compilation options and their usage. This includes both developer-oriented documentation (API changes, code structure) and user-oriented documentation (how to configure and use native compilation).

Conclusion

The changes introduced in the git diff output aim to improve the handling of native backend compilation by centralizing configuration and enhancing error handling. These changes are generally positive, but require careful testing and documentation to ensure they are robust and user-friendly.