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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 /cpu/i386/Makefile | |
| 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 'cpu/i386/Makefile')
| -rw-r--r-- | cpu/i386/Makefile | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/cpu/i386/Makefile b/cpu/i386/Makefile index c44412a025..cd46dea2c7 100644 --- a/cpu/i386/Makefile +++ b/cpu/i386/Makefile @@ -1,4 +1,7 @@ # +# (C) Copyright 2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# # (C) Copyright 2002 # Daniel Engström, Omicron Ceti AB, daniel@omicron.se. # @@ -23,22 +26,26 @@ include $(TOPDIR)/config.mk -LIB = lib$(CPU).a +LIB = $(obj)lib$(CPU).a START = start.o start16.o reset.o COBJS = serial.o interrupts.o cpu.o timer.o sc520.o -AOBJS = sc520_asm.o +SOBJS = sc520_asm.o -all: .depend $(START) $(LIB) +SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) +START := $(addprefix $(obj),$(START)) -$(LIB): $(COBJS) $(AOBJS) - $(AR) crv $@ $(COBJS) $(AOBJS) +all: $(obj).depend $(START) $(LIB) + +$(LIB): $(OBJS) + $(AR) crv $@ $(OBJS) ######################################################################### -.depend: Makefile $(START:.o=.S) $(COBJS:.o=.c) $(AOBJS:.o=.S) - $(CC) -M $(CFLAGS) $(START:.o=.S) $(COBJS:.o=.c) $(AOBJS:.o=.S) > $@ +# defines $(obj).depend target +include $(SRCTREE)/rules.mk -sinclude .depend +sinclude $(obj).depend ######################################################################### |