[PATCH] D16511: [MSVC Compat] Only warn for unknown clang-cl arguments

[Ehsan Akhgari via cfe-commits]

ehsan created this revision.
ehsan added a reviewer: rnk.
ehsan added a subscriber: cfe-commits.

MSVC's driver accepts all unknown arguments but warns about them.  clang
by default rejects all unknown arguments.  This causes issues
specifically with build systems such as autoconf which liberally pass
things such as $LDFLAGS to the compiler and expect everything to work.
This patch teaches clang-cl to ignore unknown driver arguments.

http://reviews.llvm.org/D16511

Files:
  include/clang/Basic/DiagnosticDriverKinds.td
  lib/Driver/Driver.cpp
  lib/Driver/Tools.cpp
  test/Driver/cl-fallback.c
  test/Driver/unknown-arg.c
  test/Misc/warning-flags.c

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D16511.45796.patch
Type: text/x-patch
Size: 4995 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20160123/d119eeb2/attachment.bin>