UPBGE/upbge
build_files/build_environment/patches/cmake/modules/FindIlmBase.cmake
:229
file(STRINGS ${ILMBASE_INCLUDE_DIR}/OpenEXR/IlmBaseConfig.h
ILMBASE_HAVE_PTHREAD
REGEX "^[ \\t]*#define[ \\t]+HAVE_PTHREAD[ \\t]1[ \\t]*\$"
)