Re: 2.6.8 link failure for powerpc-970?

Dan Kegel
2004-09-22T16:43:45Z

Dan Kegel wrote:
>> On Mon, 2004-09-20 at 10:24, Dan Kegel wrote:
>>
>>> I'm trying to verify that I can build toolchains and compile
>>> and link kernels for a large set of CPU types using simple kernel
>>> config files.
>>> I'm also somewhat foolishly trying to do all this with gcc-3.4.2.
>>> So any problems I run into are a bit hard to pin down to
>>> compiler, kernel, or user error, since this is mostly new territory
>>> for me. ...
>
> arch/ppc64/kernel/built-in.o(.text+0xdc44): In function `.sys32_ipc':
> : undefined reference to `.compat_sys_shmctl'
> ...

Could it be a config problem? My config file was from 'allnoconfig', I think, and has
$ egrep 'SYSV|COMPAT' .config
CONFIG_COMPAT=y
# CONFIG_SYSVIPC is not set
compat_sys_shmctl is in ipc/compat.c, and is enabled by CONFIG_SYSVIPC_COMPAT,
which depends on CONFIG_SYSVIPC, which is off.

The reference to compat_sys_shmctl seems to be in
./arch/ia64/ia32/sys_ia32.c
./arch/ppc64/kernel/sys_ppc32.c
./arch/x86_64/ia32/ipc32.c
./arch/s390/kernel/compat_linux.c
and appears to not be conditioned on CONFIG_SYSVIPC_COMPAT.
Seems like linking problems are expected unless you turn on
CONFIG_SYSVIPC and CONFIG_SYSVIPC_COMPAT.

I turned 'em on and am trying again.
- Dan