if ENABLE_SP_FDM SP_DIR = SP else SP_DIR = endif SUBDIRS = JSBSim LaRCsim UIUCModel YASim \ $(SP_DIR) ExternalNet ExternalPipe noinst_LIBRARIES = libFlight.a libFlight_a_SOURCES = \ flight.cxx flight.hxx \ groundcache.cxx groundcache.hxx \ UFO.cxx UFO.hxx \ NullFDM.cxx NullFDM.hxx INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src