[PATCH] D12029: [lld] LinkDriver, llvm-link: introduce shim.

[Martell Malone via llvm-commits]

martell created this revision.
martell added reviewers: compnerd, ruiu.
martell added subscribers: llvm-commits, lld, silvas, meadori.

lld-link is intended to be a link.exe compatible utility
This is intended to become a shim that converts link commands to ld commands.

This was previously suggested by Saleem here
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20150608/280890.html

I would like to implement this in 3 stages.
1. Introduce this LinkDriver.
2. Migrate the driver in COFF to the LinkDriver
3. Unify the COFF and ELF linker to have a unified interface via ld
4. Change LinkDriver from an interface to an argument conversion shim.

I believe this would be the best way todo this because the product will still be complete at stage 3 and we can then weigh in the pros and cons of changing LinkDriver to a conversion shim.

If this proves successful we can do a Ld64Driver similar to this.

http://reviews.llvm.org/D12029

Files:
  include/lld/LinkDriver/LinkDriver.h
  lib/CMakeLists.txt
  lib/LinkDriver/CMakeLists.txt
  lib/LinkDriver/LinkDriver.cpp
  lib/LinkDriver/Options.td
  tools/lld/CMakeLists.txt
  tools/lld/install_symlink.cmake

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