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enable_language(C)
cmake_policy(SET CMP0054 NEW)
set (lib_name "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}lib${CMAKE_STATIC_LIBRARY_SUFFIX}")
if (CMAKE_SYSTEM_NAME STREQUAL "Windows")
if (RunCMake_C_COMPILER_ID STREQUAL "MSVC"
OR ("x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC" AND
NOT CMAKE_C_COMPILER_ID STREQUAL "Clang" OR "x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC"))
if (CMAKE_SIZEOF_VOID_P EQUAL 4)
set (undef_flag /INCLUDE:_func)
else()
set (undef_flag /INCLUDE:func)
endif()
else()
if (CMAKE_SIZEOF_VOID_P EQUAL 4)
set (undef_flag -u _func)
else()
set (undef_flag -u func)
endif()
endif()
elseif (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
set (undef_flag -u _func)
else()
set (undef_flag -u func)
endif()
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
try_compile(result ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/lib.c
COPY_FILE "${lib_name}")
set(CMAKE_TRY_COMPILE_TARGET_TYPE EXECUTABLE)
try_run(run_result compile_result ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/main.c
COMPILE_OUTPUT_VARIABLE compile_out
RUN_OUTPUT_VARIABLE run_out
LINK_OPTIONS ${undef_flag} "${lib_name}")
if(NOT compile_result)
message(FATAL_ERROR "try_run(... LINK_OPTIONS ...) compilation failed:\n${compile_out}")
endif()
if(run_result STREQUAL "FAILED_TO_RUN")
message(FATAL_ERROR "try_run(... LINK_OPTIONS ...) execution failed:\n${run_out}")
endif()
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