add_sources(chaco coarsen.c makeccoords.c makev2cv.c maxmatch3.c coarsen1.c makecgraph.c maxmatch.c maxmatch4.c countcedges.c makecgraph2.c maxmatch1.c maxmatch5.c interpolate.c makefgraph.c maxmatch2.c maxmatch9.c)