diff options
Diffstat (limited to 'third_party/glog/cmake/DetermineGflagsNamespace.cmake')
| -rw-r--r-- | third_party/glog/cmake/DetermineGflagsNamespace.cmake | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/glog/cmake/DetermineGflagsNamespace.cmake b/third_party/glog/cmake/DetermineGflagsNamespace.cmake new file mode 100644 index 0000000000..3dde42b4b3 --- /dev/null +++ b/third_party/glog/cmake/DetermineGflagsNamespace.cmake @@ -0,0 +1,69 @@ +macro(determine_gflags_namespace VARIABLE) + if (NOT DEFINED "${VARIABLE}") + if (CMAKE_REQUIRED_INCLUDES) + set (CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}") + else () + set (CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS) + endif () + + set(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS}) + + set(_NAMESPACES gflags google) + set(_check_code +" +#include <gflags/gflags.h> + +int main(int argc, char**argv) +{ + GLOG_GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true); +} +") + if (NOT CMAKE_REQUIRED_QUIET) + message (STATUS "Looking for gflags namespace") + endif () + if (${ARGC} EQUAL 3) + set (CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS}) + set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ARGV2}") + endif () + + set (_check_file + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/DetermineGflagsNamespace.cxx) + + foreach (_namespace ${_NAMESPACES}) + file (WRITE "${_check_file}" "${_check_code}") + try_compile (${VARIABLE} + "${CMAKE_BINARY_DIR}" "${_check_file}" + COMPILE_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}" -DGLOG_GFLAGS_NAMESPACE=${_namespace} + LINK_LIBRARIES gflags + CMAKE_FLAGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} + OUTPUT_VARIABLE OUTPUT) + + if (${VARIABLE}) + set (${VARIABLE} ${_namespace} CACHE INTERNAL "gflags namespace" FORCE) + break () + else () + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Determining the gflags namespace ${_namespace} failed with the following output:\n" + "${OUTPUT}\n\n") + endif () + endforeach (_namespace) + + if (${ARGC} EQUAL 3) + set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS_SAVE}) + endif () + + if (${VARIABLE}) + if (NOT CMAKE_REQUIRED_QUIET) + message (STATUS "Looking for gflags namespace - ${${VARIABLE}}") + endif () + file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Determining the gflags namespace passed with the following output:\n" + "${OUTPUT}\n\n") + else () + if (NOT CMAKE_REQUIRED_QUIET) + message (STATUS "Looking for gflags namespace - failed") + endif () + set (${VARIABLE} ${_namespace} CACHE INTERNAL "gflags namespace") + endif () + endif () +endmacro () |