Regarding the problem with libtool not working correctly, please note that the "cp inc/* /usr/include" tacked on to the end of "libtool -dynamic -v -o lib/libgsm.1.0.13.dylib -install_name /usr/lib/libgsm.1.0.13.dylib -compatibility_version 1.0.13 -current_version 1.0.13 -lc ${GSMOBJS}cp inc/* /usr/include" is actually a separate command.
Separate the two and it should work fine.
GL,
David
