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Date: Sun, 20 Aug 2006 16:31:17 +0200 From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@...oo.it> To: Andrew Morton <akpm@...l.org>, Andi Kleen <ak@...e.de> Cc: linux-kernel@...r.kernel.org Subject: [PATCH] x86_64: fix linking on 32-bit system From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@...oo.it> When compiling a 64-bit kernel on an Ubuntu 6.06 32bit system (whose GCC is also a cross-compiler for x86_64) I've seen that head.o is compiled as a 64-bit file (while it should not) and ld complaining about this during linking: ld: warning: i386:x86-64 architecture of input file `arch/x86_64/boot/compressed/head.o' is incompatible with i386 output I've verified that removing -m64 from compilation flags to turn "-m64 -traditional -m32" into "-traditional -m32" fixes the issue. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@...oo.it> --- arch/x86_64/boot/compressed/Makefile | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/arch/x86_64/boot/compressed/Makefile b/arch/x86_64/boot/compressed/Makefile index f89d96f..c6bfd23 100644 --- a/arch/x86_64/boot/compressed/Makefile +++ b/arch/x86_64/boot/compressed/Makefile @@ -7,7 +7,9 @@ # Note all the files here are compiled/l # targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o -EXTRA_AFLAGS := -traditional -m32 +EXTRA_AFLAGS := -traditional +#Gcc on Ubuntu 6.06 does not cope well with -m64 -m32 - it uses -m64. +AFLAGS := $(subst -m64,-m32,$(AFLAGS)) # cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with # -m32 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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