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# check for gcc/clang atomic builtins like __sync_add_and_fetch
IF(NOT WIN32)
IF(NOT DEFINED VTK_HAVE_SYNC_BUILTINS)
MESSAGE(STATUS "Checking for builtin __sync_add_and_fetch")
TRY_COMPILE(VTK_TEST_SYNC_BUILTINS_COMPILED
${VTK_BINARY_DIR}/CMakeTmp/Sync
${VTK_CMAKE_DIR}/vtkTestSyncBuiltins.cxx
OUTPUT_VARIABLE OUTPUT)
IF(VTK_TEST_SYNC_BUILTINS_COMPILED)
MESSAGE(STATUS "Checking for builtin __sync_add_and_fetch -- success")
SET(VTK_HAVE_SYNC_BUILTINS 1 CACHE INTERNAL "For __sync atomic builtins.")
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
"Determining if the C++ compiler supports __sync_add_and_fetch builtin "
"passed with the following output:\n"
"${OUTPUT}\n")
ELSE()
MESSAGE(STATUS "Checking for builtin __sync_add_and_fetch -- failed")
SET(VTK_HAVE_SYNC_BUILTINS 0 CACHE INTERNAL "For __sync atomic builtins.")
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
"Determining if the C++ compiler supports __sync_add_and_fetch builtin "
"failed with the following output:\n"
"${OUTPUT}\n")
ENDIF()
ENDIF()
ENDIF()
|
