[sane-devel] backends not -j safe

Ilia Sotnikov hostcc at gmail.com
Tue Jun 12 06:41:09 UTC 2007

On 6/8/07, Greg Troxel <gdt at ir.bbn.com> wrote:
> I've investigated further, and found another directory that fails due to
> the build of a .o not being finished before the ar/ranlib rule to make a
> .a.  If I run BSD make with -j4 I can't get it to fail.  But with GNU
> make -j4, it fails pretty regularly.  This is gmake 3.81 on NetBSD
> 4.0_BETA2 on i386 on a single processor machine.
> The problem occurs in sane-backends-1.0.18/lib.
> The bug is that libtool --mode=compile will build not only the shared
> .lo but the unshared .o as well.  After make ensures that the .o is
> built, and goes on to run the rules to get the .lo, it then feels free
> to run the .o->.a rule in parallel, and this can lose as a .o is
> recreated.
> I can explain further if this is not adequately clear.

Thank you for the report, I've also faced with the problem. Just
commited the fix into the CVS.

 Ilia Sotnikov

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