#32 support parallel source builds

[Jonathan Dowland]

Hi — the way the source is currently structured makes it a bit difficult to parallelize. For the Debian package (and I presume other distributions) we essentially do the following

    # Build the main game binaries
    make -C engine/hexen2 h2
    make -s -C engine/hexen2 clean
    make -C engine/hexen2 glh2
    make -s -C engine/hexen2 clean
    # Build the dedicated server
    make -C engine/hexen2/server
    # HexenWorld binaries
    make -C engine/hexenworld/server
    make -C engine/hexenworld/client hw
    make -s -C engine/hexenworld/client clean
    make -C engine/hexenworld/client glhw
    # HexenWorld master server
    make -C hw_utils/hwmaster
    # Build h2patch
    make -C h2patch
    # Launcher binaries
    make -C launcher
    # Build the hcode compiler
    make -C utils/hcc

Whilst we can pass -j flags to each individual make, and it might be possible for us to run some of those stages in parallel (perhaps each sequential make prior to a clean, such as server and client hw before glhw), life would be a lot nicer if the upstream Makefile(s) were constructed in a way that the clean target 'guards' were not necessary.

Thanks

[Ozkan Sezer]

Thanks for the suggestion. This had always been on my todo list, but I will now give it a priority. I will report back here when I finish it.

Thanks.