Add missing linking with zlib and libpthread/librt The uncompress and sem_* functions are used by various parts of the code but the files built from that code were not linked with zlib/pthread/rt. This fixes building with the --no-add-needed linker option. Fixes: https://bugs.debian.org/604796

Starting with an unpacked tarball, try this:

    ./configure
    make
    su
    make install


Starting with a mercurial working directory, try this:

    make -f *cvs
    make -C xml all distclean
    make distcheck