Parallelize building lib/ncurses

[ngie]

Summary

Parallelize building lib/ncurses

MFC after: 1 week

[• ian]

I had done the same thing (with more typing and less .for) a few months ago, but never committed it because there was other parallel build trouble at the time and I didn't want to muddy things.

I notice when I did it I made ncursesw depend on ncurses. I don't remember whether I was certain that was required or was just being extra-careful.

[ngie]

In D1353#3, @ian wrote:

I had done the same thing (with more typing and less .for) a few months ago, but never committed it because there was other parallel build trouble at the time and I didn't want to muddy things.

I notice when I did it I made ncursesw depend on ncurses. I don't remember whether I was certain that was required or was just being extra-careful.

I considered doing that as well for a brief while, but then I remembered that ncursesw .include's ncurses's Makefile, so there isn't a build race with the generated files if the directories are built in the correct process (obj -> depend -> all -> install).

$ pwd
/usr/src.svn/lib/ncurses/ncurses
$ make -V.PATH
. /usr/src.svn/lib/ncurses/ncurses /usr/src.svn/lib/ncurses/ncurses/../../../contrib/ncurses/include /usr/src.svn/lib/ncurses/ncurses/../../../contrib/ncurses/ncurses/base /usr/src.svn/lib/ncurses/ncurses/../../../contrib/ncurses/ncurses/tinfo /usr/src.svn/lib/ncurses/ncurses/../../../contrib/ncurses/ncurses/tty /usr/src.svn/lib/ncurses/ncurses/../../../contrib/ncurses/ncurses/trace

[ngie]

Closed by commit rS276320 (authored by @ngie).