I believe that geography/shapelib/buildlink3.mk needs
BUILDLINK_INCDIRS.shapelib:= include/libshp
added so that applications can find the #include file. Am I correct? Or
should applications that use it be patched to say #include<libshp/shaplfil.h>?
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb