[PATCH] D37541: llvm-lib: add a feature to merge library files.

[Rui Ueyama via Phabricator via llvm-commits]

ruiu created this revision.
Herald added a subscriber: hiraditya.

If an input file is actually an archive file, MSVC lib.exe doesn't add
that file to a resulting archive file. Instead, it will add its members
to a resulting archive. Therefore, by giving archive files to lib.exe,
you can merge them without extracting-and-rearchiving them.

This patch is to add the same functionality to llvm-lib, which is our
version of lib.exe.


https://reviews.llvm.org/D37541

Files:
  llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp
  llvm/test/LibDriver/invalid.test
  llvm/test/LibDriver/merge.test

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