[llvm] r258181 - Fix bootstrap -Werror builds after clang r258128

[Nico Weber via llvm-commits]

Author: nico
Date: Tue Jan 19 14:52:17 2016
New Revision: 258181

URL: http://llvm.org/viewvc/llvm-project?rev=258181&view=rev
Log:
Fix bootstrap -Werror builds after clang r258128

Modified:
    llvm/trunk/cmake/modules/HandleLLVMOptions.cmake

Modified: llvm/trunk/cmake/modules/HandleLLVMOptions.cmake
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/cmake/modules/HandleLLVMOptions.cmake?rev=258181&r1=258180&r2=258181&view=diff
==============================================================================
--- llvm/trunk/cmake/modules/HandleLLVMOptions.cmake (original)
+++ llvm/trunk/cmake/modules/HandleLLVMOptions.cmake Tue Jan 19 14:52:17 2016
@@ -403,6 +403,9 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE
     append("-Wall -W -Wno-unused-parameter -Wwrite-strings" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
     append("-Wcast-qual" CMAKE_CXX_FLAGS)
 
+    # FIXME: Clean up the codebase, then remove this flag.
+    add_flag_if_supported("-Wno-expansion-to-defined" EXPANSION_TO_DEFINED_FLAG)
+
     # Turn off missing field initializer warnings for gcc to avoid noise from
     # false positives with empty {}. Turn them on otherwise (they're off by
     # default for clang).