On 03/09/2012 02:01 PM, Paul Gortmaker wrote:
Hi Stephen,
The linux-next builds for cavium defconfig have been failing for
quite some time now, since it tries to use gcc-4.2 and the option
for the octeon didn't appear until gcc-4.4 ("-march=octeon")
http://kisskb.ellerman.id.au/kisskb/target/5509/
I'm not sure there is any real "best" choice (hence I cc'd David
and Ralf) but I just tested by grabbing the toolchain from here:
As you note, The OCTEON kernel build currently requires -march=octeon,
this is not gratuitous. There is some asm code in there that requires
OCTEON support in the toolchain. So currently an attempt to use a
toolchain that doesn't support -march=octeon will fail.
So there are a couple of choices:
1) Use a modern toolchain.
2) Figure out how to patch the kernel such that a modern toolchain is
not needed.
I don't really plan on working on #2.
David Daney
ftp://ftp.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.2/
and it seems fine with building the cavium. I'm not sure if the
kisskb does per-target toolchain, or needs it per-arch, but I would
suspect that the above is fine for all of mips anyway.
What is the process for getting a different toolchain building the
cavium in linux-next?
Thanks,
Paul.
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