Re: Likely bug: SMOBs and mark functions [Was: Re: [bug #30480] VM: load looks for files in the wrong directory]

[Luca Saiu]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 02/16/2011 02:23 PM, Ludovic Courtès wrote:
> Can you try with a stock 7.2?

I've tried with the latest 7.2 tarball I've found at
http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/ , i.e. the
alpha5 of 2011-02-01; to make it quick yes, the thing worked, so the
problem probably depended on libgc.  Sorry for the noise.

Anyway, I've noticed another glitch, which again may or may not be my fault.

Testing 2.0.0 instead of git mainline.  Downloaded from ftp, configured,
compiled, installed.  The only parameter I gave configure was
- --prefix=/home/luca/usr
. I've been doing that for years: my PATH, LIBRARY_PATH,
LD_LIBRARY_PATH, and friends should be ok:
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ env |
grep home\/luca\/usr
CPLUS_INCLUDE_PATH=/home/luca/usr/include:/usr/local/include:/usr/include:/usr/X11R6/include:/usr/include/X11
MANPATH=/home/luca/usr/man:/home/luca/usr/share/man:/usr/local/man:/usr/local/share/man:/usr/man:/usr/share/man:/usr/X11R6/man:/usr/X11R6/share/man
OBJC_INCLUDE_PATH=/home/luca/usr/include:/usr/local/include:/usr/include:/usr/X11R6/include:/usr/include/X11
LIBRARY_PATH=/home/luca/usr/lib:/home/luca/usr/lib64:/lib:/usr/local/lib:/usr/lib:/usr/X11R6/lib:/lib64:/usr/local/lib64:/usr/lib64:/usr/X11R6/lib64
LD_LIBRARY_PATH=/home/luca/usr/lib:/home/luca/usr/lib64:/lib:/usr/local/lib:/usr/lib:/usr/X11R6/lib:/lib64:/usr/local/lib64:/usr/lib64:/usr/X11R6/lib64
CPATH=/home/luca/usr/include:/usr/local/include:/usr/include:/usr/X11R6/include:/usr/include/X11
PATH=/home/luca/bin:/home/luca/usr/bin:/bin:/usr/local/bin:/usr/bin:/usr/X11R6/bin
C_INCLUDE_PATH=/home/luca/usr/include:/usr/local/include:/usr/include:/usr/X11R6/include:/usr/include/X11
INFOPATH=/home/luca/usr/info:/home/luca/usr/share/info:/usr/local/info:/usr/local/share/info:/usr/info:/usr/share/info:/usr/X11R6/info:/usr/X11R6/share/info

I've found a pkg-config problem (occurring when I try to compile the
exemple-smob example with the provided Makefile) which I don't remember
seeing with git snapshots:
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$
pkg-config guile-2.0 --cflags
Package guile-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `guile-2.0.pc'
to the PKG_CONFIG_PATH environment variable
No package 'guile-2.0' found

This might have something to do with my unusual multiple prefixes, but
it didn't happen with snapshots!  guile-config still works fine.

Is this the problem? I have this file:
  /home/luca/usr/lib/pkgconfig/guile-2.0.pc
But nothing related to guile-2.0 in
  /home/luca/usr/lib/pkgconfig/
Now I don't have any other version of guile installed.

I've never taken the time to really understand pkg-config, and I have to
admit I'm somewhat prejudiced against it.  Anyway, now Guile should even
support installing several different versions; isn't there a clean way
of using different prefixes with pkg-config?  I really like to do that,
because this allows me to use different prefixes for differently
dangerous tests, rather than trashing /usr/local or /usr with all my
experiments.

If I ignore pkg-config for the moment and compile the SMOB example the
old way, everything works:
address@hidden ~/projects-by-others/guile-2.0.0/doc]$ cd example-smob/
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ ls
total 24
4 ChangeLog-2008  4 Makefile  4 README  4 image-type.c  4 myguile.c  4
image-type.h
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ gcc -c
`guile-config compile` myguile.c
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ gcc -c
`guile-config compile` image-type.c
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ gcc
`guile-config link` image-type.o myguile.o
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ ls
total 44
 4 ChangeLog-2008   4 Makefile   4 README   4 image-type.c   4 myguile.c
  4 image-type.h   4 image-type.o   4 myguile.o  12 a.out*
address@hidden ~/projects-by-others/guile-2.0.0/doc/example-smob]$ ./a.out
GNU Guile 2.0.0
Copyright (C) 1995-2011 Free Software Foundation, Inc.

Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.

And this I can't crash guile by calling gc.  So what I was speaking
about in the previous messages was indeed a false alarm.  Sorry.

Thanks for 2.0 :-)

- -- 
Luca Saiu
http://www-lipn.univ-paris13.fr/~saiu
GNU epsilon: http://www.gnu.org/software/epsilon
Marionnet:   http://www.marionnet.org
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk1c7S0ACgkQvzOavibF0oZGSgCghzID9oB+Zv8e1zycCEi2lED1
epQAn0uPbvMbImC7n/+NHSb9Og6cXYpT
=c1tg
-----END PGP SIGNATURE-----