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Add LLVM_ENABLE_LLD option to use LLD as C/C++ linker.

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Differential revision: https://reviews.llvm.org/D22896

llvm-svn: 277093
This commit is contained in:
Eugene Zelenko 2016-07-29 00:46:13 +00:00
parent e25d88d3d4
commit aef9df0c15
2 changed files with 7 additions and 0 deletions
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1
CMakeLists.txt
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@ -317,6 +317,7 @@ endif()
option(LLVM_ENABLE_CXX1Y "Compile with C++1y enabled." OFF)
option(LLVM_ENABLE_LIBCXX "Use libc++ if available." OFF)
option(LLVM_ENABLE_LIBCXXABI "Use libc++abi when using libc++." OFF)
option(LLVM_ENABLE_LLD "Use lld as C and C++ linker." OFF)
option(LLVM_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
option(LLVM_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)

6
cmake/modules/HandleLLVMOptions.cmake
View File

@ -144,6 +144,12 @@ function(add_flag_or_print_warning flag name)
endif()
endfunction()
if(LLVM_ENABLE_LLD)
check_cxx_compiler_flag("-fuse-ld=lld" CXX_SUPPORTS_LLD)
append_if(CXX_SUPPORTS_LLD "-fuse-ld=lld"
CMAKE_EXE_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
endif()
if( LLVM_ENABLE_PIC )
if( XCODE )
# Xcode has -mdynamic-no-pic on by default, which overrides -fPIC. I don't