On Tue, May 25, 2010 at 10:37:17AM +0200, Juergen Daubert wrote:
On Mon, May 24, 2010 at 12:59:12PM +0200, Tilman Sauerbeck wrote:
Hi, I made /bin/sh point to dash instead of bash and measure how this change speeds up a few randomly picked configure scripts.
That looks quite noticable. My only concerns is that there are a lot of programs out, which starts shell scripts in their autoconf stuff with /bin/sh but using bash extensions instead. To get a feeling about that, I've done a complete rebuild of core in my CRUX 2.7 test-drive, but nothing failed at all :) Even not glibc, but using version 2.11.2 there.
I'm sorry, made a made a mistake in the first run. Actually 2 ports failed, automake and usbutils. The first is trivial because automake's configure checks for a valid shell, dash isn't one of them. The failure of usbutils is a more fragile one, because there's something wrong with the build of libusb, a dependency of usbutils. It's easy to reproduce the error: #:> ln -sf dash /bin/sh #:> prt-get update -fr libusb usbutils It works if libusb was build with bash as shell. Don't know what's going wrong here, but at all I think it's not worth to hunt bugs like that. Even though it would be nice to have the speed improvments of dash, but well ... Greetings Juergen -- Juergen Daubert | mailto:jue@jue.li Korb, Germany | http://jue.li/crux