Simplified rpmbuild process:
- Copy files directly to BUILD directory (no tar archive)
- Use --noclean flag to preserve BUILD contents
- Use %{_builddir} macro in spec file instead of %{_sourcedir}
This avoids the complexity of source archive creation/extraction
and fixes the 'No such file or directory' error.
Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>