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authorMarian Balakowicz <m8@semihalf.com>2006-09-01 19:49:50 +0200
committerMarian Balakowicz <m8@semihalf.com>2006-09-01 19:49:50 +0200
commitf93286397ed2a7084efb0362a43ee09f11702349 (patch)
tree11e0c11781ba0b867831eff47a4178a464cf00b3 /dtt
parent24d3d3754634532ae262075484e7c1d00d447152 (diff)
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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.
Diffstat (limited to 'dtt')
-rw-r--r--dtt/Makefile18
1 files changed, 12 insertions, 6 deletions
diff --git a/dtt/Makefile b/dtt/Makefile
index 0a33478..486008a 100644
--- a/dtt/Makefile
+++ b/dtt/Makefile
@@ -1,4 +1,7 @@
#
+# (C) Copyright 2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
# (C) Copyright 2001
# Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
#
@@ -25,20 +28,23 @@ include $(TOPDIR)/config.mk
#CFLAGS += -DDEBUG
-LIB = libdtt.a
+LIB = $(obj)libdtt.a
+
+COBJS = lm75.o ds1621.o adm1021.o
-OBJS = lm75.o ds1621.o adm1021.o
+SRCS := $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
all: $(LIB)
-$(LIB): $(START) $(OBJS)
+$(LIB): $(obj).depend $(OBJS)
$(AR) crv $@ $(OBJS)
#########################################################################
-.depend: Makefile $(OBJS:.o=.c)
- $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
-sinclude .depend
+sinclude $(obj).depend
#########################################################################