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[cmake] Make linker detection take flags into account

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LLVM might be compiled using a toolchain file which controls the linker
to use via flags (e.g. `-B` or `-fuse-ld=`). Take these flags into
account for linker detection. We can also correct the detection by
manually passing LLVM_USE_LINKER, of course, but it seems more
convenient to have the detection take flags into account.

Differential Revision: https://reviews.llvm.org/D45464

llvm-svn: 330924
This commit is contained in:
Shoaib Meenai 2018-04-26 06:04:46 +00:00
parent b15fe856ad
commit 2b5151e0b0
1 changed files with 2 additions and 1 deletions

3
cmake/modules/AddLLVM.cmake

@ -152,7 +152,8 @@ if(NOT WIN32 AND NOT APPLE)
if( LLVM_USE_LINKER )
set(command ${CMAKE_C_COMPILER} -fuse-ld=${LLVM_USE_LINKER} -Wl,--version)
else()
set(command ${CMAKE_C_COMPILER} -Wl,--version)
separate_arguments(flags UNIX_COMMAND "${CMAKE_EXE_LINKER_FLAGS}")
set(command ${CMAKE_C_COMPILER} ${flags} -Wl,--version)
endif()
execute_process(
COMMAND ${command}