diff options
Diffstat (limited to 'cmake/modules/GUDHI_compilation_flags.cmake')
-rw-r--r-- | cmake/modules/GUDHI_compilation_flags.cmake | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/cmake/modules/GUDHI_compilation_flags.cmake b/cmake/modules/GUDHI_compilation_flags.cmake new file mode 100644 index 00000000..a01d6e13 --- /dev/null +++ b/cmake/modules/GUDHI_compilation_flags.cmake @@ -0,0 +1,72 @@ +# This files manage compilation flags required by GUDHI + +include(TestCXXAcceptsFlag) +include(CheckCXXSourceCompiles) + +# add a compiler flag only if it is accepted +macro(add_cxx_compiler_flag _flag) + string(REPLACE "-" "_" _flag_var ${_flag}) + check_cxx_accepts_flag("${_flag}" CXX_COMPILER_${_flag_var}_OK) + if(CXX_COMPILER_${_flag_var}_OK) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_flag}") + endif() +endmacro() + +function(can_cgal_use_cxx11_thread_local) + # This is because of https://github.com/CGAL/cgal/blob/master/Installation/include/CGAL/tss.h + # CGAL is using boost thread if thread_local is not ready (requires XCode 8 for Mac). + # The test in https://github.com/CGAL/cgal/blob/master/Installation/include/CGAL/config.h + # #if __has_feature(cxx_thread_local) || \ + # ( (__GNUC__ * 100 + __GNUC_MINOR__) >= 408 && __cplusplus >= 201103L ) || \ + # ( _MSC_VER >= 1900 ) + # #define CGAL_CAN_USE_CXX11_THREAD_LOCAL + # #endif + set(CGAL_CAN_USE_CXX11_THREAD_LOCAL " + int main() { + #ifndef __has_feature + #define __has_feature(x) 0 // Compatibility with non-clang compilers. + #endif + #if __has_feature(cxx_thread_local) || \ + ( (__GNUC__ * 100 + __GNUC_MINOR__) >= 408 && __cplusplus >= 201103L ) || \ + ( _MSC_VER >= 1900 ) + bool has_feature_thread_local = true; + #else + // Explicit error of compilation for CMake test purpose - has_feature_thread_local is not defined + #endif + bool result = has_feature_thread_local; + } ") + check_cxx_source_compiles("${CGAL_CAN_USE_CXX11_THREAD_LOCAL}" CGAL_CAN_USE_CXX11_THREAD_LOCAL_RESULT) +endfunction() + +set (CMAKE_CXX_STANDARD 11) + +enable_testing() + +if(MSVC) + # Turn off some VC++ warnings + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd4267 /wd4668 /wd4311 /wd4800 /wd4820 /wd4503 /wd4244 /wd4345 /wd4996 /wd4396 /wd4018") +endif() + +add_cxx_compiler_flag("-Wall") + +if (DEBUG_TRACES) + # For programs to be more verbose + message(STATUS "DEBUG_TRACES are activated") + add_definitions(-DDEBUG_TRACES) +endif() + +set(GUDHI_CAN_USE_CXX11_THREAD_LOCAL " + int main() { + thread_local int result = 0; + return result; + } ") +check_cxx_source_compiles("${GUDHI_CAN_USE_CXX11_THREAD_LOCAL}" GUDHI_CAN_USE_CXX11_THREAD_LOCAL_RESULT) +if (GUDHI_CAN_USE_CXX11_THREAD_LOCAL_RESULT) + add_definitions(-DGUDHI_CAN_USE_CXX11_THREAD_LOCAL) +endif() + +if(CMAKE_BUILD_TYPE MATCHES Debug) + message("++ Debug compilation flags are: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG}") +else() + message("++ Release compilation flags are: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE}") +endif() |