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Add -Wl,-color-diagnostics if a linker supports the option.

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Differential Revision: https://reviews.llvm.org/D28046

llvm-svn: 291719
This commit is contained in:
Rui Ueyama 2017-01-11 22:55:35 +00:00
parent 8582abf465
commit 43a59ed7bc
2 changed files with 16 additions and 0 deletions
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8
cmake/modules/CheckLinkerFlag.cmake Normal file
View File

@ -0,0 +1,8 @@
include(CheckCXXCompilerFlag)
function(check_linker_flag flag out_var)
set(OLD_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${flag}")
check_cxx_compiler_flag("" ${out_var})
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
endfunction()

8
cmake/modules/HandleLLVMOptions.cmake
View File

@ -597,6 +597,14 @@ if (UNIX AND
append("-fcolor-diagnostics" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()
# lld doesn't print colored diagnostics when invoked from Ninja
if (UNIX AND CMAKE_GENERATOR STREQUAL "Ninja")
include(CheckLinkerFlag)
check_linker_flag("-Wl,-color-diagnostics" LINKER_SUPPORTS_COLOR_DIAGNOSTICS)
append_if(LINKER_SUPPORTS_COLOR_DIAGNOSTICS "-Wl,-color-diagnostics"
CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
endif()
# Add flags for add_dead_strip().
# FIXME: With MSVS, consider compiling with /Gy and linking with /OPT:REF?
# But MinSizeRel seems to add that automatically, so maybe disable these