How to install Citrus XPG4DL i18n module (for OpenBSD)

1. update source tree via cvs
% cd ${BSDSRCDIR}
% cvs update -dP -D yyyymmdd

2. apply the patch (you need to install ports/archivers/bzip2)
% bzcat HEAD-xpg4dl-yyyymmdd.tar.bz2 | tar xf -
% patch -p2 -E -l -d ${BSDSRCDIR} < xpg4dl.patch
% patch -p2 -E -l -d ${BSDSRCDIR} < rename.patch

3. update /usr/share/mk/bsd.*.mk files
% cd ${BSDSRCDIR}/share/mk
% sudo make install

4. run make includes (update /usr/include/* files)
% cd ${BSDSRCDIR}
% sudo make includes

5. run make beforeinstall (fix hier)
% cd ${BSDSRCDIR}
% sudo make beforeinstall

6. update /usr/lib/libc.*
% cd ${BSDSRCDIR}/lib/libc && make depend all
% sudo cp /usr/lib/libc.so.${major}.${minor} \
> /usr/lib/libc.so.${major}.${minor}.orig
% sudo make install

7. install /usr/bin/mklocale
% cd ${BSDSRCDIR}/usr.bin/mklocale && make depend all
% sudo make install

8. update /usr/libexec/lint{1,2} and /usr/bin/lint
% cd ${BSDSRCDIR}/usr.bin/xlint/lint1 && make depend all
% sudo make install
% cd ../lint2 && make depend all
% sudo make install
% cd ../xlint && make depend all
% sudo make install
% cd ../llib && make depend all
% sudo make install

9. rebuild entire systems
% cd ${BSDSRCDIR}
% sudo make build

that's all, have fun.