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| author | Petr Hosek <phosek@google.com> | 2022-01-21 09:53:14 -0800 |
|---|---|---|
| committer | Petr Hosek <phosek@google.com> | 2022-01-21 09:53:14 -0800 |
| commit | 10e5c513b59bff0a049cc2a24bb7d41cd874ad7a (patch) | |
| tree | bf1ed214c3833b9c0d0d54c428a5077e9524c366 /cmake | |
| parent | 26cbc430197a3432075c7c5dfec41765f92b97ed (diff) | |
| download | llvm-10e5c513b59bff0a049cc2a24bb7d41cd874ad7a.tar.gz | |
Revert "[cmake] Duplicate `{llvm,compiler_rt}_check_linker_flag` for runtime libs and llvm"
This reverts commit 4af11272f57a4a6fed2932e9e0857b2c1a707c51.
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/Modules/CheckLinkerFlag.cmake | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/cmake/Modules/CheckLinkerFlag.cmake b/cmake/Modules/CheckLinkerFlag.cmake new file mode 100644 index 000000000000..722fe5b1b8ea --- /dev/null +++ b/cmake/Modules/CheckLinkerFlag.cmake @@ -0,0 +1,17 @@ +include(CMakePushCheckState) +include(CheckCCompilerFlag) + +function(llvm_check_linker_flag flag dest) + # If testing a flag with check_c_compiler_flag, it gets added to the compile + # command only, but not to the linker command in that test. If the flag + # is vital for linking to succeed, the test would fail even if it would + # have succeeded if it was included on both commands. + # + # Therefore, try adding the flag to CMAKE_REQUIRED_FLAGS, which gets + # added to both compiling and linking commands in the tests. + + cmake_push_check_state() + set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${flag}") + check_c_compiler_flag("" ${dest}) + cmake_pop_check_state() +endfunction() |