Re: [PATCH 3/4] kbuild: link of vmlinux moved to a script
From: Paul Gortmaker
Date: Wed May 09 2012 - 18:58:46 EST
On Tue, May 8, 2012 at 12:51 PM, Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:
> Hi Tony.
>
> On Mon, May 07, 2012 at 04:15:44PM -0700, Tony Luck wrote:
>> This patch is now in linux-next (tag next-20120507). But it looks to have
>> broken the ia64 build. I see this error:
>>
>> CC init/version.o
>> LD init/built-in.o
>> KSYM .tmp_kallsyms1.o
>> ld: .tmp_kallsyms1.o: linking constant-gp files with non-constant-gp files
>> ld: failed to merge target specific data of file .tmp_kallsyms1.o
>> make: *** [vmlinux] Error 1
>>
>> which looks like we used the wrong compile options when building
>> .tmp_kallsyms1.o
>
> Thanks for testing!
>
> Could you try if this helps.
>
> Sam
>
> diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
> index 26c5b65..1f4c27b 100644
> --- a/scripts/link-vmlinux.sh
> +++ b/scripts/link-vmlinux.sh
> @@ -78,8 +78,8 @@ kallsyms()
> kallsymopt=--all-symbols
> fi
>
> - local aflags="${KBUILD_AFLAGS} ${NOSTDINC_FLAGS} \
> - ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"
> + local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
> + ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"
All the linux-next builds for mips are failing, which I tracked down to this.
Applying the above update doesn't help. What is happening is that MIPS
gets KBUILD_CPPFLAGS double-quoted, and then you get:
+ mips-wrs-linux-gnu-nm -n .tmp_vmlinux1
+ scripts/kallsyms
+ mips-wrs-linux-gnu-gcc -D__ASSEMBLY__ <..snip..> -D__KERNEL__
'-D"VMLINUX_LOAD_ADDRESS=0xffffffff81100000"' '-D"DATAOFFSET=0"' -c -o
.tmp_kallsyms1.o -x assembler-with-cpp -
<command-line>:0: error: macro names must be identifiers
<command-line>:0: error: macro names must be identifiers
make[1]: *** [vmlinux] Error 1
Note the '-D"VMLINUX_LOAD_ADDRESS=0xffffffff81100000"' '-D"DATAOFFSET=0"'
part -- that is what triggers the two above errors.
Paul.
>
> ${NM} -n ${1} | \
> scripts/kallsyms ${kallsymopt} | \
> --
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