Kitware/VTK
ThirdParty/hdf5/vtkhdf5/config/cmake_ext_mod/ConfigureChecks.cmake
:528
file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Performing C SOURCE FILE Test InitOnceExecuteOnce succeeded with the following output:\n"
"${OUTPUT}\n"
"Return value: ${HAVE_IOEO}\n")