diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-01-02 19:18:58 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-01-02 19:18:58 +0000 |
| commit | 53a420fba21cf1644972b34dcd811a43cdb8368d (patch) | |
| tree | 66a19f6f8b65215772549a51d688492ab8addc0d /utils/google-benchmark/cmake/AddCXXCompilerFlag.cmake | |
| parent | b50f1549701eb950921e5d6f2e55ba1a1dadbb43 (diff) | |
Notes
Diffstat (limited to 'utils/google-benchmark/cmake/AddCXXCompilerFlag.cmake')
| -rw-r--r-- | utils/google-benchmark/cmake/AddCXXCompilerFlag.cmake | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/utils/google-benchmark/cmake/AddCXXCompilerFlag.cmake b/utils/google-benchmark/cmake/AddCXXCompilerFlag.cmake new file mode 100644 index 000000000000..9afde84be11e --- /dev/null +++ b/utils/google-benchmark/cmake/AddCXXCompilerFlag.cmake @@ -0,0 +1,37 @@ +# - Adds a compiler flag if it is supported by the compiler +# +# This function checks that the supplied compiler flag is supported and then +# adds it to the corresponding compiler flags +# +# add_cxx_compiler_flag(<FLAG> [<VARIANT>]) +# +# - Example +# +# include(AddCXXCompilerFlag) +# add_cxx_compiler_flag(-Wall) +# add_cxx_compiler_flag(-no-strict-aliasing RELEASE) +# Requires CMake 2.6+ + +if(__add_cxx_compiler_flag) + return() +endif() +set(__add_cxx_compiler_flag INCLUDED) + +include(CheckCXXCompilerFlag) + +function(add_cxx_compiler_flag FLAG) + string(TOUPPER "HAVE_CXX_FLAG_${FLAG}" SANITIZED_FLAG) + string(REPLACE "+" "X" SANITIZED_FLAG ${SANITIZED_FLAG}) + string(REGEX REPLACE "[^A-Za-z_0-9]" "_" SANITIZED_FLAG ${SANITIZED_FLAG}) + string(REGEX REPLACE "_+" "_" SANITIZED_FLAG ${SANITIZED_FLAG}) + set(CMAKE_REQUIRED_FLAGS "${FLAG}") + check_cxx_compiler_flag("${FLAG}" ${SANITIZED_FLAG}) + if(${SANITIZED_FLAG}) + set(VARIANT ${ARGV1}) + if(ARGV1) + string(TOUPPER "_${VARIANT}" VARIANT) + endif() + set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE) + endif() +endfunction() + |