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| author | Marian Balakowicz <m8@semihalf.com> | 2006-09-01 19:49:50 +0200 |
|---|---|---|
| committer | Marian Balakowicz <m8@semihalf.com> | 2006-09-01 19:49:50 +0200 |
| commit | f93286397ed2a7084efb0362a43ee09f11702349 (patch) | |
| tree | 11e0c11781ba0b867831eff47a4178a464cf00b3 /examples | |
| parent | 24d3d3754634532ae262075484e7c1d00d447152 (diff) | |
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 'examples')
| -rw-r--r-- | examples/Makefile | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/examples/Makefile b/examples/Makefile index a342d75062a..85118eac689 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -1,5 +1,5 @@ # -# (C) Copyright 2000-2004 +# (C) Copyright 2000-2006 # Wolfgang Denk, DENX Software Engineering, wd@denx.de. # # See file CREDITS for list of people who contributed to this @@ -104,9 +104,9 @@ ifeq ($(BIG_ENDIAN),y) EX_LDFLAGS += -EB endif -OBJS = $(SREC:.srec=.o) +COBJS := $(SREC:.srec=.o) -LIB = libstubs.a +LIB = $(obj)libstubs.a LIBAOBJS= ifeq ($(ARCH),ppc) LIBAOBJS+= $(ARCH)_longjmp.o $(ARCH)_setjmp.o @@ -115,34 +115,40 @@ ifeq ($(CPU),mpc8xx) LIBAOBJS+= test_burst_lib.o endif LIBCOBJS= stubs.o -LIBOBJS = $(LIBAOBJS) $(LIBCOBJS) + +LIBOBJS = $(addprefix $(obj),$(LIBAOBJS) $(LIBCOBJS)) + +SRCS := $(COBJS:.o=.c) $(LIBCOBJS:.o=.c) $(if $(LIBAOBJS),$(LIBAOBJS:.o=.S)) +OBJS := $(addprefix $(obj),$(COBJS)) +BIN := $(addprefix $(obj),$(BIN)) +SREC := $(addprefix $(obj),$(SREC)) gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`) clibdir := $(shell dirname `$(CC) $(CFLAGS) -print-file-name=libc.a`) CPPFLAGS += -I.. -all: .depend $(OBJS) $(LIB) $(SREC) $(BIN) +all: $(obj).depend $(OBJS) $(LIB) $(SREC) $(BIN) ######################################################################### -$(LIB): .depend $(LIBOBJS) - $(AR) crv $@ $(LIBOBJS) +$(LIB): $(obj).depend $(LIBOBJS) + $(AR) crv $@ $(LIBOBJS) -%: %.o $(LIB) - $(LD) -g $(EX_LDFLAGS) -Ttext $(LOAD_ADDR) \ - -o $@ -e $(<:.o=) $< $(LIB) \ - -L$(gcclibdir) -lgcc -%.srec: % - $(OBJCOPY) -O srec $< $@ 2>/dev/null +$(obj)%: $(obj)%.o $(LIB) + $(LD) -g $(EX_LDFLAGS) -Ttext $(LOAD_ADDR) \ + -o $@ -e $(notdir $(<:.o=)) $< $(LIB) \ + -L$(gcclibdir) -lgcc +$(obj)%.srec: $(obj)% + $(OBJCOPY) -O srec $< $@ 2>/dev/null -%.bin: % - $(OBJCOPY) -O binary $< $@ 2>/dev/null +$(obj)%.bin: $(obj)% + $(OBJCOPY) -O binary $< $@ 2>/dev/null ######################################################################### -.depend: Makefile $(OBJS:.o=.c) $(LIBCOBJS:.o=.c) $(LIBAOBJS:.o=.S) - $(CC) -M $(CFLAGS) $(OBJS:.o=.c) $(LIBCOBJS:.o=.c) $(LIBAOBJS:.o=.S) > $@ +# defines $(obj).depend target +include $(SRCTREE)/rules.mk -sinclude .depend +sinclude $(obj).depend ######################################################################### |