cmake OPENSUBDIV_HAS_OPENMP examples

PixarAnimationStudios/OpenSubdiv opensubdiv/CMakeLists.txt :451 

target_compile_definitions(${osd_target} INTERFACE OPENSUBDIV_HAS_OPENMP)

lighttransport/tinyusdz src/osd/opensubdiv/CMakeLists.txt :423 

target_compile_definitions(${osd_target} INTERFACE OPENSUBDIV_HAS_OPENMP)