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41 lines
1.2 KiB
41 lines
1.2 KiB
5 years ago
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enable_language(C)
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cmake_policy(SET CMP0054 NEW)
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set (lib_name "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}lib${CMAKE_STATIC_LIBRARY_SUFFIX}")
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if (CMAKE_SYSTEM_NAME STREQUAL "Windows")
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if (RunCMake_C_COMPILER_ID STREQUAL "MSVC"
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OR ("x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC" AND
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NOT CMAKE_C_COMPILER_ID STREQUAL "Clang" OR "x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC"))
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if (CMAKE_SIZEOF_VOID_P EQUAL 4)
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set (undef_flag /INCLUDE:_func)
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else()
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set (undef_flag /INCLUDE:func)
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endif()
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else()
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if (CMAKE_SIZEOF_VOID_P EQUAL 4)
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set (undef_flag -u _func)
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else()
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set (undef_flag -u func)
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endif()
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endif()
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elseif (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
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set (undef_flag -u _func)
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else()
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set (undef_flag -u func)
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endif()
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set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
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try_compile(result ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/lib.c
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COPY_FILE "${lib_name}")
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set(CMAKE_TRY_COMPILE_TARGET_TYPE EXECUTABLE)
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try_compile(result ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/main.c
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OUTPUT_VARIABLE out
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LINK_OPTIONS ${undef_flag} "${lib_name}")
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if(NOT result)
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message(FATAL_ERROR "try_compile(... LINK_OPTIONS ...) failed:\n${out}")
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endif()
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