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/sandburst/karef/Makefile b/board/sandburst/karef/Makefile
index 8b3173c..60d5573 100644
--- a/board/sandburst/karef/Makefile
+++ b/board/sandburst/karef/Makefile
@@ -1,4 +1,7 @@
#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
# (C) Copyright 2005
# Sandburst Corporation
# Travis B. Sawyer
@@ -23,6 +26,9 @@
#
include $(TOPDIR)/config.mk
+ifneq ($(OBJTREE),$(SRCTREE))
+$(shell mkdir -p $(obj)../common)
+endif
# TBS: add for debugging purposes
BUILDUSER := $(shell whoami)
@@ -32,13 +38,16 @@
# TBS: end debugging
-LIB = lib$(BOARD).a
+LIB = $(obj)lib$(BOARD).a
-OBJS = $(BOARD).o ../common/flash.o ../common/ppc440gx_i2c.o \
+COBJS = $(BOARD).o ../common/flash.o ../common/ppc440gx_i2c.o \
../common/sb_common.o
SOBJS = init.o
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+SOBJS := $(addprefix $(obj),$(SOBJS))
$(LIB): $(OBJS) $(SOBJS)
$(AR) crv $@ $(OBJS)
@@ -51,9 +60,9 @@
#########################################################################
-.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
#########################################################################