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| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2005-07-14 00:33:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-14 09:00:25 -0700 |
| commit | 20d0021394c1b070bf04b22c5bc8fdb437edd4c5 (patch) | |
| tree | 283d0cd3bfdaec49ed2b29d568f5ceca5e3f1d2a /arch/um/Makefile-x86_64 | |
| parent | ecc354a90af90a80dcaccc750f5f3e5e7c83112d (diff) | |
| download | blackbird-op-linux-20d0021394c1b070bf04b22c5bc8fdb437edd4c5.tar.gz blackbird-op-linux-20d0021394c1b070bf04b22c5bc8fdb437edd4c5.zip | |
[PATCH] uml: allow building as 32-bit binary on 64bit host
This patch makes the command:
make ARCH=um SUBARCH=i386
work on x86_64 hosts (with support for building 32-bit binaries). This is
especially needed since 64-bit UMLs don't support 32-bit emulation for guest
binaries, currently. This has been tested in all possible cases and works.
Only exception is that I've built but not tested a 64-bit binary, because I
hadn't a 64-bit filesystem available.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/Makefile-x86_64')
| -rw-r--r-- | arch/um/Makefile-x86_64 | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64 index d80bd0052e6b..aa2f7174ebca 100644 --- a/arch/um/Makefile-x86_64 +++ b/arch/um/Makefile-x86_64 @@ -1,11 +1,13 @@ # Copyright 2003 - 2004 Pathscale, Inc # Released under the GPL -SUBARCH_LIBS := arch/um/sys-x86_64/ +libs-y += arch/um/sys-x86_64/ START := 0x60000000 +#We #undef __x86_64__ for kernelspace, not for userspace where +#it's needed for headers to work! CFLAGS += -U__$(SUBARCH)__ -fno-builtin $(STUB_CFLAGS) -ARCH_USER_CFLAGS := -D__x86_64__ +USER_CFLAGS += -fno-builtin ELF_ARCH := i386:x86-64 ELF_FORMAT := elf64-x86-64 |
