diff options
Diffstat (limited to 'CMakeModules/AppendCompilerFlags.cmake')
| -rw-r--r-- | CMakeModules/AppendCompilerFlags.cmake | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/CMakeModules/AppendCompilerFlags.cmake b/CMakeModules/AppendCompilerFlags.cmake new file mode 100644 index 0000000..58d3f99 --- /dev/null +++ b/CMakeModules/AppendCompilerFlags.cmake @@ -0,0 +1,38 @@ +include(CheckCSourceCompiles) +include(CheckCXXSourceCompiles) + +macro(append_c_compiler_flags _flags _name _result) + set(SAFE_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS}) + string(REGEX REPLACE "[-+/ ]" "_" cname "${_name}") + string(TOUPPER "${cname}" cname) + foreach(flag ${_flags}) + string(REGEX REPLACE "^[-+/ ]+(.*)[-+/ ]*$" "\\1" flagname "${flag}") + string(REGEX REPLACE "[-+/ ]" "_" flagname "${flagname}") + string(TOUPPER "${flagname}" flagname) + set(have_flag "HAVE_${cname}_${flagname}") + set(CMAKE_REQUIRED_FLAGS "${flag}") + check_c_source_compiles("int main() { return 0; }" ${have_flag}) + if(${have_flag}) + set(${_result} "${${_result}} ${flag}") + endif(${have_flag}) + endforeach(flag) + set(CMAKE_REQUIRED_FLAGS ${SAFE_CMAKE_REQUIRED_FLAGS}) +endmacro(append_c_compiler_flags) + +macro(append_cxx_compiler_flags _flags _name _result) + set(SAFE_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS}) + string(REGEX REPLACE "[-+/ ]" "_" cname "${_name}") + string(TOUPPER "${cname}" cname) + foreach(flag ${_flags}) + string(REGEX REPLACE "^[-+/ ]+(.*)[-+/ ]*$" "\\1" flagname "${flag}") + string(REGEX REPLACE "[-+/ ]" "_" flagname "${flagname}") + string(TOUPPER "${flagname}" flagname) + set(have_flag "HAVE_${cname}_${flagname}") + set(CMAKE_REQUIRED_FLAGS "${flag}") + check_cxx_source_compiles("int main() { return 0; }" ${have_flag}) + if(${have_flag}) + set(${_result} "${${_result}} ${flag}") + endif(${have_flag}) + endforeach(flag) + set(CMAKE_REQUIRED_FLAGS ${SAFE_CMAKE_REQUIRED_FLAGS}) +endmacro(append_cxx_compiler_flags) |