libxx: Map all output files to the bin directory

[W-M-R]

Summary

libxx: Map all output files to the bin directory

1. There are files with the same name in libcxx, so the generated files must be separated by files

Impact

No

Testing

Mo

[nuttxpr]

[Experimental Bot, please feedback here]

No, this PR does not meet the NuttX requirements. While it provides a summary, it lacks crucial information.

Here's why:

• Insufficient Summary: While it states what is being changed (mapping output files), it fails to explain why this change is necessary, how it works, and if it relates to any existing issues.
• Missing Impact Assessment: Simply stating "No" is insufficient. Each impact category needs to be addressed individually, even if the answer is no. A justification is required. For example, "Impact on user: NO - This is a purely internal change to the build system and will not affect user experience."
• Inadequate Testing: "Mo" is not acceptable. The testing section needs to provide details about the build host and target environment(s). It also requires logs demonstrating the behavior before and after the change to prove the fix works as intended. Without proper logs, there's no evidence the changes have been tested effectively.

To make this PR acceptable, the author needs to:

1. Expand the Summary: Explain the rationale behind moving output files. What problem does this solve? How does the mapping mechanism work? Are there any related issues?

2. Address Each Impact Category: Even if the impact is "NO", briefly explain why. For instance:

   • Impact on build: YES - The build system now places all output files in the bin directory.
   • Impact on user: NO - This change only affects the build process and should not impact user functionality.
   • ...and so on for all categories.

3. Provide Thorough Testing Information: Specify the build host OS, CPU architecture, compiler, and version. Detail the target architecture, board, and configuration. Include relevant logs from before and after the change to demonstrate the issue and the fix.

Without these improvements, the PR provides insufficient information for proper review and cannot be considered complete.

[xiaoxiang781216]

why need manually create the subdir?

[W-M-R]

Through discussion, since the bin directory is mainly for separate compilation of kernel mode and user mode, libxx does not need this process. Therefore, the creation of the bin directory is meaningless and this patch will be closed.