if HAVE_THREADS SGTHREAD_DIR = threads else SGTHREAD_DIR = endif # METAR_DIRS = METAR_DIRS = environment EXTRA_DIST = simgear_config.h.vc5 version.h.in include_HEADERS = \ compiler.h constants.h sg_inlines.h sg_traits.hxx version.h SUBDIRS = \ $(compatibility_DIR) \ xml \ debug \ misc \ structure \ bucket \ ephemeris \ io \ magvar \ math \ $(METAR_DIRS) \ nasal \ props \ route \ scene \ screen \ serial \ sound \ $(SGTHREAD_DIR) \ timing \ xgl DIST_SUBDIRS = $(SUBDIRS) compatibility threads