On Mon, Jul 5, 2010 at 13:14, Diego Elio 'Flameeyes' Pettenò <flameeyes@xxxxxxxxx> wrote: > After a couple of updates on my Gentoo systems (I'm a developer and I take > care of automated testing, so I have a few installs around) I noticed that > util-linux-ng takes an unexpected "long" time to build from scratch. > > The problem is that by using recursive make, it cannot run all of it in > parallel (I have an 8-way system), as it synchronises on each > directory. Also, the recursion itself is quite expensive for make to > handle. > > I'm sending a series of patches that transform the build system from the > current recursive Makefiles system to a non-recursive one. It's quite easy > to deal with it, in general, you only have to remember that the target > variables are prefixed with the relative path of the output (so it's > misc_utils_blkid for instance, rather than simply blkid). > > I documented most of what is needed for non-recursive automake in my guide > http://www.flameeyes.eu/autotools-mythbuster/ and if anybody have further > doubts about it, feel free to drop me an email and I'll gladly extend the > documentation. One thing that I have (yet) to document there is the > handling of multiple .am files (module.am is what I called them) to avoid > creating one huge Makefile.am file, and instead keep the rules tied with > the sources themselves. > > Finally, I have wired out the testsuite to "make check"... it's mostly > working although it fails for out-of-tree builds (and thus with make > distcheck)... I can probably fix it but I wanted to make sure the rest is > accepted first. This looks nice, and seems to work fine here. And I'm still very happy with the same stuff you did for the udev source tree a while back. Thanks, Kay -- To unsubscribe from this list: send the line "unsubscribe util-linux-ng" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
