Missing libraries and RPATH ?

[Frédéric Fauberteau <triaxx%NetBSD.org@localhost>]

Hi all,

I am building wine on the most powerful of my NetBSD boxes, an AMD 
Athlon(tm) 64 X2. I got the following errors during install phase:
ERROR: bin/widl: missing library: libi386.so.1
ERROR: bin/wine: missing library: libi386.so.1
ERROR: bin/winebuild: missing library: libi386.so.1
ERROR: bin/winedump: missing library: libi386.so.1
ERROR: bin/winegcc: missing library: libi386.so.1
ERROR: bin/wineserver: missing library: libi386.so.1
ERROR: bin/wmc: missing library: libi386.so.1
ERROR: bin/wrc: missing library: libi386.so.1
ERROR: lib/libwine.so.1.0: missing library: libi386.so.1
ERROR: lib/wine/acledit.dll.so: missing library: libi386.so.1
ERROR: lib/wine/aclui.dll.so: missing library: libi386.so.1
ERROR: lib/wine/activeds.dll.so: missing library: libi386.so.1
ERROR: lib/wine/actxprxy.dll.so: missing library: libi386.so.1
[...]

I see that files are linked to libi386.so.1:
$ ldd -o work/.destdir/mnt/netbsd/pkg/bin/widl
work/.destdir/mnt/netbsd/pkg/bin/widl:-lossaudio.1 => 
/usr/lib/i386/libossaudio.so.1
work/.destdir/mnt/netbsd/pkg/bin/widl:-lc.12 => /usr/lib/i386/libc.so.12
work/.destdir/mnt/netbsd/pkg/bin/widl:-li386.1 => 
/usr/lib/i386/libi386.so.1
work/.destdir/mnt/netbsd/pkg/bin/widl:-lgcc_s.1 => 
/usr/lib/i386/libgcc_s.so.1

But /usr/lib/i386 is not in RPATH:
$ objdump -x work/.destdir/mnt/netbsd/pkg/bin/widl | grep PATH
  RPATH                /mnt/netbsd/pkg/lib

I found it could be a problem of RPATH that could be solve by a 
-Wl,-R/usr/lib/i386...

Actually, I miss the course on linker and I am not sure from where is 
the problem: configure script of Wine, our linker, my pkgsrc Makefile...

Since the build is long on my system, I cannot use my traditional 
trial/error approach. I am reading TFM but I would be grateful if a 
skillful eye could help me to look in the right side.

Thanks,
Fred