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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 | |
| parent | ecc354a90af90a80dcaccc750f5f3e5e7c83112d (diff) | |
| download | linux-3.10-20d0021394c1b070bf04b22c5bc8fdb437edd4c5.tar.gz linux-3.10-20d0021394c1b070bf04b22c5bc8fdb437edd4c5.tar.bz2 linux-3.10-20d0021394c1b070bf04b22c5bc8fdb437edd4c5.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')
| -rw-r--r-- | arch/um/Makefile | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile index 6a7a9f43cde..eb4ac403bd9 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -51,11 +51,6 @@ MRPROPER_DIRS += $(ARCH_DIR)/include2 endif SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) -include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) - -core-y += $(SUBARCH_CORE) -libs-y += $(SUBARCH_LIBS) - # -Dvmap=kernel_vmap affects everything, and prevents anything from # referencing the libpcap.o symbol so named. @@ -64,7 +59,7 @@ CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ USER_CFLAGS := $(patsubst -I%,,$(CFLAGS)) USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ - $(MODE_INCLUDE) $(ARCH_USER_CFLAGS) + $(MODE_INCLUDE) # -Derrno=kernel_errno - This turns all kernel references to errno into # kernel_errno to separate them from the libc errno. This allows -fno-common @@ -74,6 +69,8 @@ USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask CFLAGS += $(call cc-option,-fno-unit-at-a-time,) +include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) + #This will adjust *FLAGS accordingly to the platform. include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) @@ -132,7 +129,7 @@ CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \ #The wrappers will select whether using "malloc" or the kernel allocator. LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc -CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS) +CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) define cmd_vmlinux__ $(CC) $(CFLAGS_vmlinux) -o $@ \ -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ |