make -j12 all fails in uImage target

[Tom Rini]

On Sun, Feb 06, 2005 at 11:53:23PM +0100, Sam Ravnborg wrote:
> On Sun, Feb 06, 2005 at 02:51:31PM -0700, Tom Rini wrote:
> > On Sun, Feb 06, 2005 at 01:40:14PM +0100, Olaf Hering wrote:
> > > 
> > > this is what I got with 2.6.11rc3:
> > > 
> > > make ARCH=ppc O=../O-2.6.11-rc3-b50-SMP -j12 all
> > > ...
> > >   LD      vmlinux
> > >   SYSMAP  System.map
> > >   SYSMAP  .tmp_System.map
> > >   OBJCOPY arch/ppc/boot/images/vmlinux.bin
> > >   HOSTCC  arch/ppc/boot/utils/addnote
> > >   HOSTCC  arch/ppc/boot/utils/mknote
> > >   HOSTCC  arch/ppc/boot/utils/mkprep
> > >   LD      arch/ppc/boot/lib/built-in.o
> > >   HOSTCC  arch/ppc/boot/utils/hack-coff
> > >   HOSTCC  arch/ppc/boot/utils/mkbugboot
> > >   OBJCOPY arch/ppc/boot/images/vmlinux.bin
> > >   GZIP    arch/ppc/boot/images/vmlinux.gz
> > > /bin/sh: line 1: arch/ppc/boot/images/vmlinux.bin: No such file or directory
> > > make[2]: *** [arch/ppc/boot/images/vmlinux.gz] Error 1
> > > make[1]: *** [uImage] Error 2
> > > make[1]: *** Waiting for unfinished jobs....
> > > 
> > > also, one time that zImage.chrp was only 570K instead of the expected
> > > 1.4M, so netboot failed. But I got no build error.
> > > Any idea what dependency is missing?
> > 
> > That is kinda odd.  My thought is that arch/ppc/boot/ just isn't fully
> > safe for -j'ing.  Sam, any ideas on how to debug this kinda problem?
> 
> The problem is that the images/ sub directory is visited before the
> prerequisites are finished.
> I have no good way to debug this - I can see it based on the Makefile and
> the output Olaf included.
> 
> Also the problem Olaf describe is just a cp of a half finished file.
> 
> 
> So the fix is to let the images/ directory depends on the rest of the
> directories.
> 
> Something like this may do the trick:
> 
> $(obj)/images: $(addprefix $(obj)/,$(subdir-y) $(bootdir-y))
> 	$(Q)$(MAKE) $(build)=$@
> 
> And then delete the assignment of images to subdir-y
> 
> 
> Another solution would be to get rid on the images/ drectory and place
> outputfiles where they are being built.

Hopefully the first works, since I really do like having all the various
images we create end up in one spot. :)

-- 
Tom Rini
http://gate.crashing.org/~trini/