| cmake_minimum_required(VERSION 3.0.0) |
| project(WriteCompilerDetectionHeader) |
| |
| set(CMAKE_INCLUDE_CURRENT_DIR ON) |
| |
| include(WriteCompilerDetectionHeader) |
| |
| get_property(cxx_known_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES) |
| get_property(c_known_features GLOBAL PROPERTY CMAKE_C_KNOWN_FEATURES) |
| |
| write_compiler_detection_header( |
| FILE "${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h" |
| PREFIX TEST |
| COMPILERS GNU Clang |
| VERSION 3.1 |
| PROLOG "// something" |
| EPILOG "// more" |
| FEATURES |
| ${cxx_known_features} ${c_known_features} |
| ) |
| |
| if (NOT CMAKE_CXX_COMPILE_FEATURES AND NOT CMAKE_C_COMPILE_FEATURES) |
| file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp" |
| "int main(int,char**) { return 0; }\n" |
| ) |
| add_executable(WriteCompilerDetectionHeader "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp") |
| |
| include(CheckCXXSourceCompiles) |
| check_cxx_source_compiles("#include \"${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h\"\nint main() { return 0; }\n" |
| file_include_works |
| ) |
| if (file_include_works) |
| message(SEND_ERROR "Inclusion of ${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h was expected to cause an error, but did not.") |
| endif() |
| return() |
| endif() |
| |
| string(REGEX REPLACE "^([0-9]+)\\.[0-9]+\\.[0-9]+.*" "\\1" COMPILER_VERSION_MAJOR "${CMAKE_CXX_COMPILER_VERSION}") |
| string(REGEX REPLACE "^[0-9]+\\.([0-9]+)\\.[0-9]+.*" "\\1" COMPILER_VERSION_MINOR "${CMAKE_CXX_COMPILER_VERSION}") |
| string(REGEX REPLACE "^[0-9]+\\.[0-9]+\\.([0-9]+).*" "\\1" COMPILER_VERSION_PATCH "${CMAKE_CXX_COMPILER_VERSION}") |
| |
| macro(set_defines target true_defs false_defs) |
| set(defines) |
| foreach(def ${true_defs}) |
| list(APPEND defines ${def}=1) |
| endforeach() |
| foreach(def ${false_defs}) |
| list(APPEND defines ${def}=0) |
| endforeach() |
| target_compile_definitions(${target} |
| PRIVATE |
| ${defines} |
| EXPECTED_COMPILER_VERSION_MAJOR=${COMPILER_VERSION_MAJOR} |
| EXPECTED_COMPILER_VERSION_MINOR=${COMPILER_VERSION_MINOR} |
| EXPECTED_COMPILER_VERSION_PATCH=${COMPILER_VERSION_PATCH} |
| ) |
| endmacro() |
| |
| if (CMAKE_CXX_COMPILER_ID STREQUAL GNU |
| OR CMAKE_CXX_COMPILER_ID STREQUAL Clang) |
| # False for C++98 mode. |
| list(APPEND false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS) |
| list(APPEND false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES) |
| endif() |
| |
| if (CMAKE_C_COMPILER_ID STREQUAL GNU |
| OR CMAKE_C_COMPILER_ID STREQUAL Clang) |
| add_executable(C_undefined c_undefined.c) |
| set_property(TARGET C_undefined PROPERTY CXX_STANDARD 90) |
| target_compile_options(C_undefined PRIVATE -Werror=undef) |
| endif() |
| |
| add_executable(WriteCompilerDetectionHeader main.cpp) |
| set_property(TARGET WriteCompilerDetectionHeader PROPERTY CXX_STANDARD 98) |
| set_defines(WriteCompilerDetectionHeader "${true_defs}" "${false_defs}") |
| |
| if(MSVC) |
| return() # MSVC has only one mode. |
| endif() |
| |
| # Since GNU 4.7 |
| if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_delegating_constructors;") |
| list(APPEND true_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS) |
| list(REMOVE_ITEM false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS) |
| endif() |
| |
| # Since GNU 4.4 |
| if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_variadic_templates;") |
| list(APPEND true_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES) |
| list(REMOVE_ITEM false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES) |
| endif() |
| |
| add_executable(WriteCompilerDetectionHeader_11 main.cpp) |
| set_property(TARGET WriteCompilerDetectionHeader_11 PROPERTY CXX_STANDARD 11) |
| set_defines(WriteCompilerDetectionHeader_11 "${true_defs}" "${false_defs}") |