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[PATCH] uml: fix compilation options for USER_OBJS

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From: Jeff Dike <jdike@addtoit.com>, Paolo Giarrusso <blaisorblade@yahoo.it>

Make sure that when compiling USER_OBJS the correct compilation options are
passed; since they are compiled with USER_CFLAGS which is derived from
CFLAGS, make sure it is a recursively evaluated variable, so that changes
to CFLAGS done afterwards the inclusion of arch/$(ARCH)/Makefile are
reflected in USER_CFLAGS.

For instance, without this patch userspace objects are never compiled with
debug info active.

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>
This commit is contained in:
akpm@osdl.org 2006-10-29 22:46:42 -08:00 committed by Linus Torvalds
parent b428b51ed9
commit d45e44d4be
3 changed files with 14 additions and 15 deletions
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21
arch/um/Makefile
View file

@ -64,9 +64,14 @@ CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
AFLAGS += $(ARCH_INCLUDE)
USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
$(MODE_INCLUDE) -D_FILE_OFFSET_BITS=64
USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
$(patsubst -I%,,$(CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
-D_FILE_OFFSET_BITS=64
include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
#This will adjust *FLAGS accordingly to the platform.
include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
# -Derrno=kernel_errno - This turns all kernel references to errno into
# kernel_errno to separate them from the libc errno. This allows -fno-common
@ -74,15 +79,11 @@ USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
# errnos.
# These apply to kernelspace only.
CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
-Dmktime=kernel_mktime
KERNEL_DEFINES = -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
-Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)
CFLAGS += $(KERNEL_DEFINES)
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)
# These are needed for clean and mrproper, since in that case .config is not
# included; the values here are meaningless

4
arch/um/Makefile-i386
View file

@ -16,7 +16,6 @@ OBJCOPYFLAGS := -O binary -R .note -R .comment -S
ifeq ("$(origin SUBARCH)", "command line")
ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)")
CFLAGS += $(call cc-option,-m32)
USER_CFLAGS += $(call cc-option,-m32)
AFLAGS += $(call cc-option,-m32)
LINK-y += $(call cc-option,-m32)
UML_OBJCOPYFLAGS += -F $(ELF_FORMAT)
@ -25,7 +24,7 @@ export LDFLAGS HOSTCFLAGS HOSTLDFLAGS UML_OBJCOPYFLAGS
endif
endif
CFLAGS += -U__$(SUBARCH)__ -U$(SUBARCH)
ARCH_KERNEL_DEFINES += -U__$(SUBARCH)__ -U$(SUBARCH)
# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
include $(srctree)/arch/i386/Makefile.cpu
@ -38,4 +37,3 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
cflags-y += -ffreestanding
CFLAGS += $(cflags-y)
USER_CFLAGS += $(cflags-y)

4
arch/um/Makefile-x86_64
View file

@ -8,8 +8,8 @@ _extra_flags_ = -fno-builtin -m64
#We #undef __x86_64__ for kernelspace, not for userspace where
#it's needed for headers to work!
CFLAGS += -U__$(SUBARCH)__ $(_extra_flags_)
USER_CFLAGS += $(_extra_flags_)
ARCH_KERNEL_DEFINES = -U__$(SUBARCH)__
CFLAGS += $(_extra_flags_)
CHECKFLAGS += -m64
AFLAGS += -m64