1) Build Judy and copy the lib file to plugin directory.

    cd judy-1.0.5
    ./configure
    make
    cp src/obj/.libs/libJudy.a ../plugin_src/

2) Compile liblbc

    gcc -c -I. -O2 zinit.c -o zinit.o
    ar rcs liblbc.a zinit.o

3) Create plugin so file.

    cd plugin_src
    make

    or use the following gcc command
    gcc -I`gcc -print-file-name=plugin`/include -fPIC -shared -O2 plugin_lbc.c -o plugin_lbc.so

4) Start using the plugin using the following command:

    gcc -fplugin=../plugin-src/plugin_lbc.so hello.c -llbc -fdump-tree-all -L../liblbc/

Alternatively, copy the files liblbc.a and plugin_lbc.so to /usr/local/lib in order to skip
the relative paths in the above command line.