Comment author: ertai

I cannot reproduce the bug (at least with the last version).

Can you reproduce it on a tiny example?

Do you have a plugin?

Comment author: rbornat

I don't have a plugin, so far as I know. (Actually I don't know what you are asking). Here's a little terminal log: nothing happens in the second build, and the main.native in _buildppc has the wrong architecture. After a -clean I get the right effect.

[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% ls -a
. .. main.ml
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% ocamlbuild -build-dir _buildi386 -lib unix main.native
Finished, 4 targets (0 cached) in 00:00:01.
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% ocamlbuild -build-dir _buildppc -lib unix -ocamlopt '/usr/local/bin/ocamloptppc -ccopt "-arch ppc" -nostdlib -I /usr/local/lib/ocamlppc' main.native
Finished, 0 targets (0 cached) in 00:00:00.
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% ls -Ra
. .. _buildi386 _buildppc _log main.ml main.native

./_buildi386:
. .. _digests main.cmi main.cmo main.cmx main.ml main.ml.depends main.native main.o

./_buildppc:
. .. _digests main.native
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% cat main.ml
output_string stderr "hello world"
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% lipo !*
lipo -info */main.native
Non-fat file: _buildi386/main.native is architecture: i386
Non-fat file: _buildppc/main.native is architecture: i386
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% ocamlbuild -clean
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% ocamlbuild -build-dir _buildppc -lib unix -ocamlopt '/usr/local/bin/ocamloptppc -ccopt "-arch ppc" -nostdlib -I /usr/local/lib/ocamlppc' main.native
Finished, 4 targets (0 cached) in 00:00:01.
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard% lipo -info */main.native Non-fat file: _buildi386/main.native is architecture: i386
Non-fat file: _buildppc/main.native is architecture: ppc
[Richard-Bornats-MacBook:/Desktop/ocamlbuild bug] richard%

Comment author: ertai

Ok, I got it!

Thats the `link' feature that is mess up the whole thing.

As a workaround you can use the -no-links option to avoid creating these stupid links.

I've also fixed in CVS by automatically put -no-links when -build-dir is set.