ce28d7ac6d
Every makefile in sub directories has common lines
at the top and the bottom.
This commit pushes the common parts into script/Makefile.build.
Going forward sub-makefiles only need to describe this part:
COBJS := ...
COBJS += ...
SOBJS := ...
But using obj-y is preferable to prepare for switching to Kbuild.
The conventional (non-Kbuild) Makefile style is still supported.
This is achieved by greping the Makefile before entering into it.
U-Boot conventional sub makefiles always include some other makefiles.
So the build system searches a line beginning with "include" keyword
in the makefile in order to distinguish which style it is.
If the Makefile include a "include" line, we assume it is a conventional
U-Boot style. Otherwise, it is treated as a Kbuild-style makefile.
With this tweak, we can switch sub-makefiles
from U-Boot style to Kbuild style little by little.
obj-y := foo/
syntax (descending into the sub directory) is not supportd yet.
It will be implemented in the upcomming commit.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
49 lines
1.1 KiB
Makefile
49 lines
1.1 KiB
Makefile
# our default target
|
|
.PHONY: all
|
|
all:
|
|
|
|
include $(TOPDIR)/config.mk
|
|
|
|
LIB := $(obj)built-in.o
|
|
LIBGCC = $(obj)libgcc.o
|
|
SRCS :=
|
|
|
|
include Makefile
|
|
|
|
# Backward compatible: obj-y is preferable
|
|
COBJS := $(sort $(COBJS) $(COBJS-y))
|
|
SOBJS := $(sort $(SOBJS) $(SOBJS-y))
|
|
|
|
# Going forward use the following
|
|
obj-y := $(sort $(obj-y))
|
|
extra-y := $(sort $(extra-y))
|
|
lib-y := $(sort $(lib-y))
|
|
|
|
SRCS += $(COBJS:.o=.c) $(SOBJS:.o=.S) \
|
|
$(wildcard $(obj-y:.o=.c) $(obj-y:.o=.S) $(lib-y:.o=.c) $(lib-y:.o=.S) $(extra-y:.o=.c) $(extra-y:.o=.S))
|
|
OBJS := $(addprefix $(obj),$(COBJS) $(SOBJS) $(obj-y))
|
|
|
|
LGOBJS := $(addprefix $(obj),$(sort $(GLSOBJS) $(GLCOBJS)) $(lib-y))
|
|
|
|
all: $(LIB) $(addprefix $(obj),$(extra-y))
|
|
|
|
$(LIB): $(obj).depend $(OBJS)
|
|
$(call cmd_link_o_target, $(OBJS))
|
|
|
|
ifneq ($(strip $(lib-y)),)
|
|
all: $(LIBGCC)
|
|
|
|
$(LIBGCC): $(obj).depend $(LGOBJS)
|
|
$(call cmd_link_o_target, $(LGOBJS))
|
|
endif
|
|
|
|
#########################################################################
|
|
|
|
# defines $(obj).depend target
|
|
|
|
include $(TOPDIR)/rules.mk
|
|
|
|
sinclude $(obj).depend
|
|
|
|
#########################################################################
|