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List Archive: gentoo-bsd
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To: gentoo-bsd@g.o
From: Patrice Clement <patrice@...>
Subject: [SoC 2009] Gentoo/NetBSD ? Of course it runs !
Date: Wed, 19 Aug 2009 21:04:45 +0200
Heya people,

This is the final GSoC week and we are near from the end: I'll soon release my
work. Yesterday, I've tried to boot a NetBSD machine under QEMU, where my stage
has been extracted and guess what? It boots, I can login into, and even emerge ebuilds!

I've planned to release 3 things to the community:
- my ebuilds: they need to be reworked and to be heavily tested. The only
  feedbacks I get has been from Davide and Luca. Don't hesitate to make
suggestions and comments on my work.
- a stage: currently, the stage contains everything you'll need to run the
  system. Fetch NetBSD 5.0, perform a minimal install and untar the stage on /,
as a normal Gentoo/Linux install.
- a QEMU image: to quickly test my work, without losing time of an
  installation, you can try this image. Simply boot the image and enjoy.

I'm 5% from the end. What are the 5% left ?
A very weird behavior has appeared: on my NetBSD box, when I emerge an ebuild
in the ROOT, as example: nano, ebuild is emerged, chrooting inside the ROOT and
running the binary works fine. No problem with that. So where is the error ?
When I emerge the same ebuild inside the ROOT, it works but each time you
execute this binary, it produces a gmon.out file. Even without using emerge
(downloading sources, ./configure & make), it also produces a gmon.out after
beeing executed. I don't think the problem comes from emerge. But from where ?
GCC comes from NetBSD sources, as same as binutils.
I can read in GCC man page that gmon.out is produced when -pg flag is used.
Here are my CFLAGS & CXXFLAGS variables from /etc/make.conf, in my ROOT directory:
  CFLAGS="-march=i386 -pipe -O2"
  CXXFLAGS=${CFLAGS}
I use the same outside the ROOT (on my NetBSD devel box). I've never used this
-pg flag. Ever !

Here's an example of this weird behavior:

(I emerge nano as an example, but you can emerge whatever you want, it's the
same)

# emerge -v nano
Calculating dependencies... done!

[ebuild   R   ] app-editors/nano-2.1.9 to /gentoo-nbsd/ USE="-debug -justify-minimal -ncurses -nls -slang -spell -unicode" 0 kB
Total: 1 package (1 upgrade), Size of downloads: 0 kB

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) app-editors/nano-2.1.9 for /gentoo-nbsd/
[...]
>>> Installing (1 of 1) app-editors/nano-2.1.9 to /gentoo-nbsd/
 * More helpful info about nano, visit the GDP page:
 * http://www.gentoo.org/doc/en/nano-basics-guide.xml
>>> Auto-cleaning packages...

>>> Using system located in ROOT tree /gentoo-nbsd/
 * GNU info directory index is up-to-date.

(ok, we're good)
# chroot /gentoo-nbsd /bin/bash
(we're now inside the ROOT)
soc-netbsd ~ # mkdir output
soc-netbsd ~ # cd output/
soc-netbsd output # ls .
soc-netbsd output # nano
(nano opens itself, I close it)
soc-netbsd output # ls .
soc-netbsd output # emerge -v nano
Calculating dependencies... done!

[ebuild   R   ] app-editors/nano-2.1.9 USE="-debug -justify -minimal -ncurses -nls -slang -spell -unicode" 0 kB
Total: 1 package (1 upgrade), Size of downloads: 0 kB

>>> Verifying ebuild manifests

>>> Emerging (1 of 1) app-editors/nano-2.1.9
[...]
>>> Original instance of package unmerged safely.
 * More helpful info about nano, visit the GDP page:
 * http://www.gentoo.org/doc/en/nano-basics-guide.xml
>>> Auto-cleaning packages...

 * GNU info directory index is up-to-date.

soc-netbsd output # ls .
soc-netbsd output # nano
(open/close)
soc-netbsd output # ls .
gmon.out

I've certainly missed something but I still don't get it. If someone have any
clues about this and could give me a hand, that could be nice.

Thanks !

Cheers,
Patrice


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