ee5b9cd59d
This PR adds support for selecting specific archive members in llvm-symbolizer using the `archive.a(member.o)` syntax, with architecture-aware member selection. **Key features:** 1. **Archive member selection syntax**: Specify archive members using `archive.a(member.o)` format 2. **Architecture selection via `--default-arch` flag**: Select the appropriate member when multiple members have the same name but different architectures 3. **Architecture selection via `:arch` suffix**: Alternative syntax `archive.a(member.o):arch` for specifying architecture This functionality is primarily designed for AIX big archives, which can contain multiple members with the same name but different architectures (32-bit and 64-bit). However, the implementation works with all archive formats (GNU, BSD, Darwin, big archive) and handles same-named members created with llvm-ar q. --------- Co-authored-by: Midhunesh <midhuensh.p@ibm.com>
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