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s390: fix linker script for 31 bit builds 

Because of a change in the s390 arch backend of binutils (commit 23ecd77
"Pick the default arch depending on the target size" in binutils repo)
31 bit builds will fail since the linker would now try to create 64 bit
binary output.
Fix this by setting OUTPUT_ARCH to s390:31-bit instead of s390.
Thanks to Andreas Krebbel for figuring out the issue.

Fixes this build error:

  LD      init/built-in.o
s390x-4.7.2-ld: s390:31-bit architecture of input file
 `arch/s390/kernel/head.o' is incompatible with s390:64-bit output

Cc: Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2012-10-18 11:11:01 +02:00 committed by Martin Schwidefsky
parent 0f58aac9af
commit c985cb37f1
2 changed files with 2 additions and 2 deletions
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2
arch/s390/boot/compressed/vmlinux.lds.S
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@ -5,7 +5,7 @@ OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
OUTPUT_ARCH(s390:64-bit)
#else
OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
OUTPUT_ARCH(s390)
OUTPUT_ARCH(s390:31-bit)
#endif
ENTRY(startup)

2
arch/s390/kernel/vmlinux.lds.S
View File

@ -8,7 +8,7 @@
#ifndef CONFIG_64BIT
OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
OUTPUT_ARCH(s390)
OUTPUT_ARCH(s390:31-bit)
ENTRY(startup)
jiffies = jiffies_64 + 4;
#else