kbuild: enable 'make AFLAGS=...' to add additional options to AS
The variable AFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.
On top of that several people over time has asked for a way to
pass in additional flags to gcc.
This patch replace use of AFLAGS with KBUILD_AFLAGS all over
the tree.
Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 18123bf..d08d3bc 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -62,7 +62,7 @@
$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
-Din6addr_loopback=kernel_in6addr_loopback
-AFLAGS += $(ARCH_INCLUDE)
+KBUILD_AFLAGS += $(ARCH_INCLUDE)
USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
$(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 26bc786..d10e4dc 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -16,7 +16,7 @@
ifeq ("$(origin SUBARCH)", "command line")
ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)")
KBUILD_CFLAGS += $(call cc-option,-m32)
-AFLAGS += $(call cc-option,-m32)
+KBUILD_AFLAGS += $(call cc-option,-m32)
LINK-y += $(call cc-option,-m32)
UML_OBJCOPYFLAGS += -F $(ELF_FORMAT)
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64
index 36d2bb5..8836f0d 100644
--- a/arch/um/Makefile-x86_64
+++ b/arch/um/Makefile-x86_64
@@ -12,7 +12,7 @@
KBUILD_CFLAGS += $(_extra_flags_)
CHECKFLAGS += -m64
-AFLAGS += -m64
+KBUILD_AFLAGS += -m64
LDFLAGS += -m elf_x86_64
CPPFLAGS += -m64
diff --git a/arch/um/sys-ppc/Makefile b/arch/um/sys-ppc/Makefile
index af20026..a9814a7 100644
--- a/arch/um/sys-ppc/Makefile
+++ b/arch/um/sys-ppc/Makefile
@@ -1,7 +1,7 @@
OBJ = built-in.o
.S.o:
- $(CC) $(AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
+ $(CC) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
OBJS = ptrace.o sigcontext.o semaphore.o checksum.o miscthings.o misc.o \
ptrace_user.o sysrq.o
@@ -57,13 +57,13 @@
checksum.o: checksum.S
rm -f asm
ln -s $(TOPDIR)/include/asm-ppc asm
- $(CC) $(EXTRA_AFLAGS) $(AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
+ $(CC) $(EXTRA_AFLAGS) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
rm -f asm
misc.o: misc.S ppc_defs.h
rm -f asm
ln -s $(TOPDIR)/include/asm-ppc asm
- $(CC) $(EXTRA_AFLAGS) $(AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
+ $(CC) $(EXTRA_AFLAGS) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
rm -f asm
clean-files := $(OBJS) ppc_defs.h checksum.S semaphore.c mk_defs.c