(cc'ing linux-arch and linux-kbuild)
On 03/07/13 01:45, Rusty Russell wrote:
> James Hogan <james.hogan@xxxxxxxxxx> writes:
>> Move all EXPORT_SYMBOLs in libs-y directories (arch/metag/{lib,tbx})
>> into metag_ksyms.c so that they don't get omitted by the static linker
>> if they're not used by any other statically linked code, which can
>> result in undefined symbols when building modules.
>>
>> For example a randconfig caused the following error:
>> ERROR: "csum_partial" [fs/reiserfs/reiserfs.ko] undefined!
>>
>> Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
>> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
>> ---
>> Unless there are any objections I'll apply this patch for v3.11. I'm
>> assuming *_ksyms.c is the way that this problem is normally worked
>> around.
>
> Actually, normally those files are obj-y not lib-y. See the top-level
> lib/.
>
> Subtle, I know.
Hmm, subtle indeed, I hadn't noticed that.
grepping for EXPORT_SYMBOL(csum_partial) gives:
./arch/avr32/kernel/avr32_ksyms.c
./arch/sparc/lib/ksyms.c
./arch/sh/kernel/sh_ksyms_32.c
./arch/powerpc/kernel/ppc_ksyms.c
./arch/unicore32/kernel/ksyms.c
./arch/x86/um/ksyms.c
./arch/x86/kernel/x8664_ksyms_64.c
./arch/x86/kernel/i386_ksyms_32.c
./arch/cris/kernel/crisksyms.c
./arch/mips/kernel/mips_ksyms.c
./arch/xtensa/kernel/xtensa_ksyms.c
./arch/arm/kernel/armksyms.c
./arch/ia64/lib/checksum.c
./arch/alpha/lib/checksum.c
./arch/c6x/lib/checksum.c
./arch/mn10300/lib/checksum.c
./arch/cris/arch-v10/lib/old_checksum.c
./arch/h8300/lib/checksum.c
./arch/parisc/lib/checksum.c
./arch/m32r/lib/csum_partial_copy.c
./arch/m68k/lib/checksum.c
./arch/metag/lib/checksum.c
./arch/frv/lib/checksum.c
./lib/checksum.c
All of the above arches have *c*sum.o in lib-y. Should they all be
switched to obj-y or the remaining EXPORT_SYMBOLs moved to *ksyms.c if
this problem is noticed?
Thanks
James
--
To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
