diff options
Diffstat (limited to 'src/civetweb/cmake/AddCXXCompilerFlag.cmake')
| -rw-r--r-- | src/civetweb/cmake/AddCXXCompilerFlag.cmake | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/civetweb/cmake/AddCXXCompilerFlag.cmake b/src/civetweb/cmake/AddCXXCompilerFlag.cmake new file mode 100644 index 000000000..5e58c6de4 --- /dev/null +++ b/src/civetweb/cmake/AddCXXCompilerFlag.cmake @@ -0,0 +1,38 @@ +# - 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("" ${SANITIZED_FLAG}) + if(${SANITIZED_FLAG}) + set(VARIANT ${ARGV1}) + if(ARGV1) + string(REGEX REPLACE "[^A-Za-z_0-9]" "_" VARIANT "${VARIANT}") + string(TOUPPER "_${VARIANT}" VARIANT) + endif() + set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS${VARIANT}} ${FLAG}" PARENT_SCOPE) + endif() +endfunction() + |