Add support for a saving build objects in a separate directory.
Modifications are based on the linux kernel approach and
support two use cases:
1) Add O= to the make command line
'make O=/tmp/build all'
2) Set environement variable BUILD_DIR to point to the desired location
'export BUILD_DIR=/tmp/build'
'make'
The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'
Command line 'O=' setting overrides BUILD_DIR environent variable.
When none of the above methods is used the local build is performed and
the object files are placed in the source directory.
diff --git a/board/xilinx/ml300/Makefile b/board/xilinx/ml300/Makefile
index 880c494..4ecf37a 100644
--- a/board/xilinx/ml300/Makefile
+++ b/board/xilinx/ml300/Makefile
@@ -1,5 +1,5 @@
#
-# (C) Copyright 2000
+# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
@@ -19,14 +19,22 @@
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
+#
include $(TOPDIR)/config.mk
+ifneq ($(OBJTREE),$(SRCTREE))
+$(shell mkdir -p $(obj)../common)
+$(shell mkdir -p $(obj)../xilinx_enet)
+$(shell mkdir -p $(obj)../xilinx_iic)
+endif
-CFLAGS += -I../ml300 -I../common -I../xilinx_enet -I../xilinx_iic
+INCS := -I../ml300 -I../common -I../xilinx_enet -I../xilinx_iic
+CFLAGS += $(INCS)
+HOST_CFLAGS += $(INCS)
-LIB = lib$(BOARD).a
+LIB = $(obj)lib$(BOARD).a
-OBJS = $(BOARD).o \
+COBJS = $(BOARD).o \
serial.o \
../xilinx_enet/emac_adapter.o ../xilinx_enet/xemac.o \
../xilinx_enet/xemac_options.o ../xilinx_enet/xemac_polled.o \
@@ -39,6 +47,10 @@
SOBJS = init.o
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $^
@@ -50,9 +62,9 @@
#########################################################################
-.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
- $(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
-sinclude .depend
+sinclude $(obj).depend
#########################################################################