81 lines
2.6 KiB
CMake
81 lines
2.6 KiB
CMake
cmake_minimum_required(VERSION 3.0.0)
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project(WriteCompilerDetectionHeader)
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set(CMAKE_INCLUDE_CURRENT_DIR ON)
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include(WriteCompilerDetectionHeader)
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get_property(cxx_known_features GLOBAL PROPERTY CMAKE_CXX_KNOWN_FEATURES)
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get_property(c_known_features GLOBAL PROPERTY CMAKE_C_KNOWN_FEATURES)
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write_compiler_detection_header(
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FILE "${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h"
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PREFIX TEST
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COMPILERS GNU
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VERSION 3.1
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PROLOG "// something"
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EPILOG "// more"
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FEATURES
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${cxx_known_features} ${c_known_features}
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)
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if (NOT CMAKE_CXX_COMPILE_FEATURES AND NOT CMAKE_C_COMPILE_FEATURES)
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file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp"
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"int main(int,char**) { return 0; }\n"
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)
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add_executable(WriteCompilerDetectionHeader "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp")
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include(CheckCXXSourceCompiles)
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check_cxx_source_compiles("#include \"${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h\"\nint main() { return 0; }\n"
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file_include_works
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)
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if (file_include_works)
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message(SEND_ERROR "Inclusion of ${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h was expected to cause an error, but did not.")
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endif()
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return()
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endif()
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macro(set_defines target true_defs false_defs)
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set(defines)
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foreach(def ${true_defs})
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list(APPEND defines ${def}=1)
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endforeach()
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foreach(def ${false_defs})
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list(APPEND defines ${def}=0)
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endforeach()
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target_compile_definitions(${target}
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PRIVATE
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${defines}
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)
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endmacro()
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if (CMAKE_CXX_COMPILER_ID STREQUAL GNU)
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# False for C++98 mode.
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list(APPEND false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS)
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list(APPEND false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
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endif()
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add_executable(WriteCompilerDetectionHeader main.cpp)
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set_property(TARGET WriteCompilerDetectionHeader PROPERTY CXX_STANDARD 98)
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set_defines(WriteCompilerDetectionHeader "${true_defs}" "${false_defs}")
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if(MSVC)
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return() # MSVC has only one mode.
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endif()
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# Since GNU 4.7
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if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_delegating_constructors;")
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list(APPEND true_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS)
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list(REMOVE_ITEM false_defs EXPECTED_COMPILER_CXX_DELEGATING_CONSTRUCTORS)
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endif()
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# Since GNU 4.4
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if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ";cxx_variadic_templates;")
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list(APPEND true_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
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list(REMOVE_ITEM false_defs EXPECTED_COMPILER_CXX_VARIADIC_TEMPLATES)
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endif()
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add_executable(WriteCompilerDetectionHeader_11 main.cpp)
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set_property(TARGET WriteCompilerDetectionHeader_11 PROPERTY CXX_STANDARD 11)
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set_defines(WriteCompilerDetectionHeader_11 "${true_defs}" "${false_defs}")
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