[PATCH] D28984: [LLD] Do not allocate space for common symbols with -r

[Mark Kettenis via Phabricator via llvm-commits]

kettenis created this revision.

Currently ld.lld -r allocates space for common symbols, whereas ld.bfd -r doesn't.
As a result the OpenBSD makefile bits for creating libraries fail as they use ld -X -r to strip local symbols,
which results in duplicate symbol errors because space for the common symbols has been allocated.

The diff also implements the --define-commons option such that allocation of commons can be forced even
if -r is used.


https://reviews.llvm.org/D28984

Files:
  lld/ELF/Config.h
  lld/ELF/Driver.cpp
  lld/ELF/Options.td
  lld/ELF/Symbols.cpp
  lld/ELF/SyntheticSections.cpp

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