Re: can't compile kernel for parisc

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> but I still can not build kernel.
> 
>    ld    -r -o init/built-in.o init/main.o init/version.o
> init/mounts.o init/noinitramfs.o init/calibrate.o
>   ld  --build-id -o .tmp_vmlinux1 -T arch/parisc/kernel/vmlinux.lds
> arch/parisc/kernel/head.o   init/built-in.o --start-group
> usr/built-in.o  arch/parisc/mm/built-in.o
> arch/parisc/kernel/built-in.o  arch/parisc/math-emu/built-in.o
> arch/parisc/kernel/init_task.o  kernel/built-in.o  mm/built-in.o
> fs/built-in.o  ipc/built-in.o  security/built-in.o  crypto/built-in.o
> block/built-in.o  lib/lib.a  arch/parisc/lib/lib.a `gcc
> -print-libgcc-file-name`  lib/built-in.o  arch/parisc/lib/built-in.o
> `gcc -print-libgcc-file-name`  drivers/built-in.o  sound/built-in.o
> firmware/built-in.o  net/built-in.o --end-group
> ld: arch/parisc/kernel/built-in.o(.text+0xc84): cannot reach
> 000000b2_b2:46+4068, recompile with -ffunction-sections
> ld: arch/parisc/kernel/built-in.o(.text+0xc84): cannot handle
> R_PARISC_PCREL12F for .text
> 
> I have recompiled kernel with -ffunction-sections, but still the same problem.

The branch target is out of range.  The message "recompile with
-ffunction-sections" is somewhat misleading in this case.

-ffunction-sections won't work because GCC doesn't generate calls
with instructions that would use a R_PARISC_PCREL12F relocation.
This is some kind of conditional branch.  Probably, it's in some
kernel assembly code.

You need to use nm, objdump and/or readelf to determine which file
contributing to built-in.o contains the branch.  I looked in one of
my builds and didn't see this relocation.

Dave
-- 
J. David Anglin                                  dave.anglin@xxxxxxxxxxxxxx
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)
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