PyWCSTools/wcssubs-3.8.7/wcs.i | 2 1 + 1 - 0 !
setup.py | 9 4 + 5 - 0 !
2 files changed, 5 insertions(+), 6 deletions(-)

 use system provided libwcstools instead of local copy
 Also, build the swig wrapper from its source file.