Re: parallel compilation --with-ns

[Sudish Joseph <sudish@gmail.com>]

chad <yandros@MIT.EDU> writes:
> Under macosx (i.e. --with-ns), I've tried using 'make -j4' off
> and on over the years, and frequently run into problems during
> the build. I end up without a complete nextstep/Emacs.app most of
> the time, and it seems to be a problem with directories not being
> created before one of the workers wants to use it. Three
> questions:
>
> 1.) Is the ns-app code known to be unable to use parallel
>     compilation?

I was doing regular make -j8 builds of the ns port up until a few months
ago and had no problems with it.

> 2.) Does it matter that I do full rebuilds each time, starting
>     with autogen.sh and ending with make bootstrap install)?

Here's the essence of the function I use to build the ns port.

sj_emacsbuild () {
  local build_dir
  rm -rf sj-build.*
  build_dir=sj-build.$$ 
  sh ./autogen.sh
  mkdir $build_dir || {
    echo "couldn't mkdir $build_dir: $!"
    return 1
  }
  cd $build_dir
  env "$EMACS_CC_FLAGS[@]" ../configure "$EMACS_CONF_FLAGS[@]" && nice -n 20 make -j8 && nice -n 20 make install
}

I then copy over Emacs.app to ~/Applications using a separate func.

You don't need to do a explicit make bootstrap, iirc.
"make maintainer-clean && make -j8" does a full build.

I used to have "git clean -xfd" in the build func above but didn't
adjust for that when switching to the bzr tree.  I.e., full builds
should work in parallel with the ns port.

-Sudish