69 lines
2.3 KiB
CMake
69 lines
2.3 KiB
CMake
macro(determine_gflags_namespace VARIABLE)
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if (NOT DEFINED "${VARIABLE}")
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if (CMAKE_REQUIRED_INCLUDES)
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set (CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
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else ()
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set (CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS)
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endif ()
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set(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS})
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set(_NAMESPACES gflags google)
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set(_check_code
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"
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#include <gflags/gflags.h>
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int main(int argc, char**argv)
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{
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GLOG_GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true);
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}
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")
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if (NOT CMAKE_REQUIRED_QUIET)
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message (STATUS "Looking for gflags namespace")
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endif ()
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if (${ARGC} EQUAL 3)
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set (CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS})
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ARGV2}")
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endif ()
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set (_check_file
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/DetermineGflagsNamespace.cxx)
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foreach (_namespace ${_NAMESPACES})
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file (WRITE "${_check_file}" "${_check_code}")
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try_compile (${VARIABLE}
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"${CMAKE_BINARY_DIR}" "${_check_file}"
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COMPILE_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}" -DGLOG_GFLAGS_NAMESPACE=${_namespace}
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LINK_LIBRARIES gflags
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CMAKE_FLAGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
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OUTPUT_VARIABLE OUTPUT)
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if (${VARIABLE})
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set (${VARIABLE} ${_namespace} CACHE INTERNAL "gflags namespace" FORCE)
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break ()
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else ()
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining the gflags namespace ${_namespace} failed with the following output:\n"
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"${OUTPUT}\n\n")
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endif ()
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endforeach (_namespace)
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if (${ARGC} EQUAL 3)
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set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS_SAVE})
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endif ()
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if (${VARIABLE})
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if (NOT CMAKE_REQUIRED_QUIET)
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message (STATUS "Looking for gflags namespace - ${${VARIABLE}}")
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endif ()
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file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining the gflags namespace passed with the following output:\n"
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"${OUTPUT}\n\n")
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else ()
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if (NOT CMAKE_REQUIRED_QUIET)
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message (STATUS "Looking for gflags namespace - failed")
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endif ()
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set (${VARIABLE} ${_namespace} CACHE INTERNAL "gflags namespace")
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endif ()
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endif ()
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endmacro ()
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