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[PATCH] uml: fix missing KBUILD_BASENAME

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2.6.15-mm1 caused kernel-offsets.c to stop compiling with a syntax error in a
header.  The problem was with KBUILD_BASENAME, which didn't get a definition
with the by-hand compilation in the main UML Makefile.

This was OK before since the expansion was syntactically the same as the
KBUILD_BASENAME token.  With -mm1, the expansion is now a quote-delimited
string, so there needs to be a definition of it.

Since kernel-offsets.c is basically the same as other arches' asm-offsets.c,
and those seem to build OK, this patch turns kernel-offsets.c into
asm-offsets.c.  kernel-offsets.c is in arch/um/sys-$(SUBARCH), i.e.  sys-i386
and sys-x86_64, while kbuild expects it to be in arch/um/kernel.
kernel-offsets.c is moved to
arch/um/include/sysdep-$(SUBARCH)/kernel-offsets.h, which is included by
arch/um/kernel/asm-offsets.c.  With that, include/asm-um/asm-offsets.h is
generated automatically.  kernel-offsets.h continues to exist because it needs
to be accessible to userspace UML code, and include/asm-um isn't.  So, a
symlink is made from arch/um/include/kernel-offsets.h to
include/asm-um/asm-offsets.h.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike 2006-01-11 12:17:23 -08:00 committed by Linus Torvalds
parent 10b5aabddd
commit 4ee189a926
4 changed files with 12 additions and 20 deletions
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23
arch/um/Makefile
View file

@ -189,6 +189,12 @@ define filechk_umlconfig
sed 's/ CONFIG/ UML_CONFIG/'
endef
$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
$(call filechk,umlconfig)
$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
$(CC) $(USER_CFLAGS) -S -o $@ $<
define filechk_gen-asm-offsets
(set -e; \
echo "/*"; \
@ -202,24 +208,13 @@ define filechk_gen-asm-offsets
echo ""; )
endef
$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
$(call filechk,umlconfig)
$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
$(CC) $(USER_CFLAGS) -S -o $@ $<
$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s
$(call filechk,gen-asm-offsets)
CLEAN_FILES += $(ARCH_DIR)/user-offsets.s
$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
archprepare
$(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/kernel-offsets.s
$(call filechk,gen-asm-offsets)
CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s
$(ARCH_DIR)/include/kern_constants.h:
@echo ' SYMLINK $@'
$(Q) ln -sf ../../../include/asm-um/asm-offsets.h $@
export SUBARCH USER_CFLAGS OS

5
arch/um/sys-i386/kernel-offsets.c → arch/um/include/sysdep-i386/kernel-offsets.h
View file

@ -1,12 +1,9 @@
#include <linux/config.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/elf.h>
#include <asm/page.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define STR(x) #x
#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " STR(val) " " #val: : )

2
arch/um/sys-x86_64/kernel-offsets.c → arch/um/include/sysdep-x86_64/kernel-offsets.h
View file

@ -6,7 +6,7 @@
#include <asm/page.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define DEFINE_STR1(x) #x
#define DEFINE_STR(sym, val) asm volatile("\n->" #sym " " DEFINE_STR1(val) " " #val: : )

2
arch/um/kernel/asm-offsets.c
View file

@ -1 +1 @@
/* Dummy file to make kbuild happy - unused! */
#include "sysdep/kernel-offsets.h"