[U-Boot] [PATCH v9 07/38] Makfile: move suffix rules to Makefile.build

Masahiro Yamada
2014-02-04T08:24:14Z

This commit moves suffix rules from config.mk
to scripts/Makefile.build, which will allow us
to switch smoothly to real Kbuild.

Note1:
post/lib_powerpc/fpu/Makefile has
its own rule to compile C sources.
We need to tweak it to keep the same behavior.

Note2:
There are two file2 with the same name:
arch/arm/lib/crt0.S and eamples/api/crt0.S.
To keep the same build behavior,
examples/api/Makefile also has to be treaked.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
---

Changes in v9: None
Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

config.mk | 35 -----------------------------------
examples/api/Makefile | 4 ++--
post/lib_powerpc/fpu/Makefile | 2 +-
scripts/Makefile.build | 31 +++++++++++++++++++++++++++++++
4 files changed, 34 insertions(+), 38 deletions(-)

diff --git a/config.mk b/config.mk
index 07afb35..b08be7a 100644
--- a/config.mk
+++ b/config.mk
@@ -318,38 +318,3 @@ endif
export HOSTCC HOSTCFLAGS HOSTLDFLAGS CROSS_COMPILE \
AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
-
-#########################################################################
-
-# Allow boards to use custom optimize flags on a per dir/file basis
-ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR))
-ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR))
-EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR))
-ALL_CFLAGS += $(EXTRA_CPPFLAGS)
-
-# The _DEP version uses the $< file target (for dependency generation)
-# See rules.mk
-EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \
- $(CPPFLAGS_$(BCURDIR))
-$(obj)%.s: %.S
- $(CPP) $(ALL_AFLAGS) -o $@ $<
-$(obj)%.o: %.S
- $(CC) $(ALL_AFLAGS) -o $@ $< -c
-$(obj)%.o: %.c
-ifneq ($(CHECKSRC),0)
- $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $<
-endif
- $(CC) $(ALL_CFLAGS) -o $@ $< -c
-$(obj)%.i: %.c
- $(CPP) $(ALL_CFLAGS) -o $@ $< -c
-$(obj)%.s: %.c
- $(CC) $(ALL_CFLAGS) -o $@ $< -c -S
-
-#########################################################################
-
-# If the list of objects to link is empty, just create an empty built-in.o
-cmd_link_o_target = $(if $(strip $1),\
- $(LD) $(LDFLAGS) -r -o $@ $1,\
- rm -f $@; $(AR) rcs $@ )
-
-#########################################################################
diff --git a/examples/api/Makefile b/examples/api/Makefile
index f770859..52f4368 100644
--- a/examples/api/Makefile
+++ b/examples/api/Makefile
@@ -50,9 +50,9 @@ $(obj)demo.bin: $(obj)demo
$(OBJCOPY) -O binary $< $@ 2>/dev/null

# Rule to build generic library C files
-$(obj)%.o: $(SRCTREE)/lib/%.c
+$(addprefix $(obj),$(notdir $(EXT_COBJ_FILES-y))): $(obj)%.o: $(SRCTREE)/lib/%.c
$(CC) -g $(CFLAGS) -c -o $@ $<

# Rule to build architecture-specific library assembly files
-$(obj)%.o: $(SRCTREE)/arch/$(ARCH)/lib/%.S
+$(addprefix $(obj),$(notdir $(EXT_SOBJ_FILES-y))): $(obj)%.o: $(SRCTREE)/arch/$(ARCH)/lib/%.S
$(CC) -g $(CFLAGS) -c -o $@ $<
diff --git a/post/lib_powerpc/fpu/Makefile b/post/lib_powerpc/fpu/Makefile
index ae56a82..a7aa5bc 100644
--- a/post/lib_powerpc/fpu/Makefile
+++ b/post/lib_powerpc/fpu/Makefile
@@ -18,7 +18,7 @@ obj-y += darwin-ldouble.o
CFLAGS := $(shell echo $(CFLAGS) | sed s/-msoft-float//)
CFLAGS += -mhard-float -fkeep-inline-functions

-$(obj)%.o: %.c
+$(addprefix $(obj),$(obj-y)): $(obj)%.o: %.c
$(CC) $(ALL_CFLAGS) -o $@.fp $< -c
$(OBJCOPY) -R .gnu.attributes $@.fp $@
rm -f $@.fp
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 50c0394..1b3d77f 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -67,6 +67,37 @@ endif

#########################################################################

+# Allow boards to use custom optimize flags on a per dir/file basis
+ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR))
+ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR))
+EXTRA_CPPFLAGS = $(CPPFLAGS_$(BCURDIR)/$(@F)) $(CPPFLAGS_$(BCURDIR))
+ALL_CFLAGS += $(EXTRA_CPPFLAGS)
+
+# The _DEP version uses the $< file target (for dependency generation)
+# See rules.mk
+EXTRA_CPPFLAGS_DEP = $(CPPFLAGS_$(BCURDIR)/$(addsuffix .o,$(basename $<))) \
+ $(CPPFLAGS_$(BCURDIR))
+$(obj)%.s: %.S
+ $(CPP) $(ALL_AFLAGS) -o $@ $<
+$(obj)%.o: %.S
+ $(CC) $(ALL_AFLAGS) -o $@ $< -c
+$(obj)%.o: %.c
+ifneq ($(CHECKSRC),0)
+ $(CHECK) $(CHECKFLAGS) $(ALL_CFLAGS) $<
+endif
+ $(CC) $(ALL_CFLAGS) -o $@ $< -c
+$(obj)%.i: %.c
+ $(CPP) $(ALL_CFLAGS) -o $@ $< -c
+$(obj)%.s: %.c
+ $(CC) $(ALL_CFLAGS) -o $@ $< -c -S
+
+# If the list of objects to link is empty, just create an empty built-in.o
+cmd_link_o_target = $(if $(strip $1),\
+ $(LD) $(LDFLAGS) -r -o $@ $1,\
+ rm -f $@; $(AR) rcs $@ )
+
+#########################################################################
+
# defines $(obj).depend target

include $(TOPDIR)/rules.mk
--
1.8.3.2