When building xnee with slibtool (https://dev.midipix.org/cross/slibtool) it fails.

make[3]: Entering directory '/tmp/xnee-3.19/cnee/src'
./cnee --manpage > cnee.1
/tmp/xnee-3.19/cnee/src/.libs/cnee: error while loading shared libraries: libxnee.so.0: cannot open shared object file: No such file or directory

This is because the build links libxnee with '-L${LIBXNEE_DIR}/src -lxnee' instead of ${LIBXNEE_DIR}/src/libxnee.la.

The canonical way of linking internal libraries is with the libtool archive (.la) file while '-L' and '-l' should be reserved for external dependencies.

I attached the patch to fix the fatal error, but I can improve other parts of the build system too if desired.