[PATCH] D57927: [llvm-ar] Implement the P modifier.

[Jordan Rupprecht via Phabricator via llvm-commits]

rupprecht created this revision.
rupprecht added reviewers: mstorsjo, pcc, ruiu, davide, david2050, rnk.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

GNU ar has a `P` modifier that changes filename comparisons to use full paths instead of the basename. As noted in the GNU docs, regular archives are not created with full path names, so P is used to deal with archives created by other archive programs (e.g. see the updated `absolute-paths.test` test case).

Since thin archives use full path names -- paths are relative to the archive -- it seems very error prone to not imply P when dealing with thin archives, so P is implied in those cases. (I think this is a deviation from GNU ar that makes sense).

This fixes PR37436 via https://github.com/ClangBuiltLinux/linux/issues/33.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D57927

Files:
  llvm/test/tools/llvm-ar/absolute-paths.test
  llvm/test/tools/llvm-ar/full-path-option.test
  llvm/tools/llvm-ar/llvm-ar.cpp

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