[PATCH] D13345: [ELF2] Add --undefined option

[Denis Protivensky via llvm-commits]

denis-protivensky created this revision.
denis-protivensky added reviewers: ruiu, rafael.
denis-protivensky added a subscriber: llvm-commits.
denis-protivensky added a project: lld.

Add symbol specified with -u as undefined which may cause additional object files from archives to be linked into the resulting binary.

http://reviews.llvm.org/D13345

Files:
  ELF/Driver.cpp
  ELF/Options.td
  ELF/SymbolTable.cpp
  ELF/SymbolTable.h
  ELF/Symbols.h
  ELF/Writer.cpp
  test/elf2/undefined-opt.s

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