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[CMake] Unify llvm_check_linker_flag and llvm_check_compiler_linker_flag

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These will be replaced by CMake's check_linker_flag once we update
the minimum CMake version 3.20.

Differential Revision: https://reviews.llvm.org/D145716
This commit is contained in:
Petr Hosek
2023-03-09 18:23:04 +00:00
parent 568be31c9e
commit 55e65ad876
2 changed files with 21 additions and 25 deletions
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5
runtimes/CMakeLists.txt
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@@ -140,8 +140,11 @@ endif()
# Check for -nostdlib++ first; if there's no C++ standard library yet,
# all check_cxx_compiler_flag commands will fail until we add -nostdlib++
# (or -nodefaultlibs).
llvm_check_compiler_linker_flag(CXX "-nostdlib++" CXX_SUPPORTS_NOSTDLIBXX_FLAG)
# TODO: Switch to check_linker_flag after raise the minimum CMake version past 3.14.
check_cxx_compiler_flag(-nostdlib++ CXX_SUPPORTS_NOSTDLIBXX_FLAG)
if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
# TODO: This is link only flag and should be added to CMAKE_REQUIRED_LINK_OPTIONS
# but that's only supported since CMake 3.14.
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nostdlib++")
endif()
check_cxx_compiler_flag(-nostdinc++ CXX_SUPPORTS_NOSTDINCXX_FLAG)