| # - 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) |
| if(ARGV1) |
| set(VARIANT ${ARGV1}) |
| string(TOLOWER ${VARIANT} VARIANT) |
| set(VARIANT " ${VARIANT}") |
| endif() |
| message("-- Check compiler${VARIANT} flag ${FLAG}") |
| string(TOUPPER ${FLAG} SANITIZED_FLAG) |
| string(REGEX REPLACE "[^A-Za-z_0-9]" "_" ${SANITIZED_FLAG} SANITIZED_FLAG) |
| check_cxx_compiler_flag(${FLAG} ${SANITIZED_FLAG}) |
| if(${SANITIZED_FLAG}) |
| message("-- Check compiler${VARIANT} flag ${FLAG} -- works") |
| string(REGEX REPLACE "[^A-Za-z_0-9]" "_" "${VARIANT}" VARIANT) |
| string(TOUPPER "${VARIANT}" VARIANT) |
| set(CMAKE_CXX_FLAGS${VARIANT} "${CMAKE_CXX_FLAGS}${VARIANT} ${FLAG}" PARENT_SCOPE) |
| endif() |
| endfunction() |
| |