From f93286397ed2a7084efb0362a43ee09f11702349 Mon Sep 17 00:00:00 2001
From: Marian Balakowicz <m8@semihalf.com>
Date: Fri, 1 Sep 2006 19:49:50 +0200
Subject: 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.
---
 board/cray/L1/Makefile | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

(limited to 'board/cray')

diff --git a/board/cray/L1/Makefile b/board/cray/L1/Makefile
index bfe0922eb..44ef9c26a 100644
--- a/board/cray/L1/Makefile
+++ b/board/cray/L1/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
@@ -23,35 +23,41 @@
 
 include $(TOPDIR)/config.mk
 
-LIB	= lib$(BOARD).a
+LIB	= $(obj)lib$(BOARD).a
 
-OBJS	= $(BOARD).o flash.o
+COBJS	= $(BOARD).o flash.o
 SOBJS	= init.o
 
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
 # HACK: depend needs bootscript.c, which needs tools/mkimage, which is not
 # built in the depend stage.  So... put bootscript.o here, not in OBJS
-$(LIB):	$(OBJS) $(SOBJS) bootscript.o
+$(LIB):	$(OBJS) $(SOBJS) $(obj)bootscript.o
 	$(AR) crv $@ $^
 
 clean:
-	rm -f $(SOBJS) $(OBJS) bootscript.c bootscript.image bootscript.o
+	rm -f $(SOBJS) $(OBJS) $(obj)bootscript.c \
+		$(obj)bootscript.image $(obj)bootscript.o
 
 distclean:	clean
 	rm -f $(LIB) core *.bak .depend
 
-$(BOARD).o : $(BOARD).c bootscript.o
+$(obj)$(BOARD).o : $(src)$(BOARD).c $(obj)bootscript.o
 
-bootscript.c: bootscript.image
+$(obj)bootscript.c: $(obj)bootscript.image
 	od -t x1 -v -A x $^ | awk -f x2c.awk > $@
 
-bootscript.image: bootscript.hush Makefile
-	-$(TOPDIR)/tools/mkimage -A ppc -O linux -T script -C none -a 0 -e 0 -n bootscript -d  bootscript.hush $@
+$(obj)bootscript.image: $(src)bootscript.hush $(src)Makefile
+	-$(OBJTREE)/tools/mkimage -A ppc -O linux -T script -C none -a 0 -e 0 -n bootscript -d $(src)bootscript.hush $@
 
 #########################################################################
 
-.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
 
 #########################################################################
-- 
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