[Buildroot] Error building with external toolchain

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Dear Danny Gale,

On Mon, 03 Feb 2014 10:48:36 -0700, Danny Gale wrote:

> > Aren't you running with "make -j<something>" by any chance?
> I'm running make with a single thread (-j1) to pinpoint this error.
> 
> The external toolchain was built on an x86_64 host by Crosstool-NG 
> 1.19.0 for a powerpc64-e6500 target. I've attached the config file for 
> ct-ng.

Ok. Can you put up online a tarball of this toolchain?

We don't have powerpc64 support in Buildroot, so maybe some minor
changes in the external toolchain logic are needed.

> I was able to go through the buildroot source and follow it through: the 
> .stamp_staging_installed target calls $($(PKG)_INSTALL_STAGING_CMDS), 
> with PKG=TOOLCHAIN_EXTERNAL. TOOLCHAIN_EXTERNAL_INSTALL_STAGING_COMMANDS 
> in ./toolchain/toolchain-external/toolchain-external.mk calls 
> TOOLCHAIN_EXTERNAL_INSTALL_CORE in that same file. The message "Copying 
> external toolchain libraries to target..." is there, though I don't 
> understand why it fails at that point.

Correct. All the external toolchain logic is in
toolchain/toolchain-external/toolchain-external.mk.

> It seems I was mistaken -- the 32-bit version of the toolchain doesn't 
> seem to import either. A different 32-bit toolchain (for the powerpc 440 
> core) does import, however. So there seems to be something wrong with my 
> toolchain configuration. I suspect RPC support to be the culprit.
> >>
> >> What will be required to get buildroot working with the 64-bit toolchain?
> > When you're talking about 32 bits or 64 bits, are you talking about the
> > bitness for the host architecture, or the target architecture?
> The target. The host is an x86_64. The target is a 64-bit powerpc (e6500 
> core)

Again, if you can sure the toolchain tarball, I could do some testing.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com