diff options
| author | Marian Balakowicz | 2006-09-01 19:49:50 +0200 |
|---|---|---|
| committer | Marian Balakowicz | 2006-09-01 19:49:50 +0200 |
| commit | f93286397ed2a7084efb0362a43ee09f11702349 (patch) | |
| tree | 11e0c11781ba0b867831eff47a4178a464cf00b3 /config.mk | |
| 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 'config.mk')
| -rw-r--r-- | config.mk | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/config.mk b/config.mk index b59667a8331..3ed7107fb80 100644 --- a/config.mk +++ b/config.mk @@ -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 @@ -23,6 +23,22 @@ ######################################################################### +ifneq ($(OBJTREE),$(SRCTREE)) +ifeq ($(CURDIR),$(SRCTREE)) +dir := +else +dir := $(subst $(SRCTREE)/,,$(CURDIR)) +endif + +obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) +src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) + +$(shell mkdir -p $(obj)) +else +obj := +src := +endif + # clean the slate ... PLATFORM_RELFLAGS = PLATFORM_CPPFLAGS = @@ -124,9 +140,14 @@ gccincdir := $(shell $(CC) -print-file-name=include) CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \ - -I$(TOPDIR)/include \ - -fno-builtin -ffreestanding -nostdinc -isystem \ - $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) + +ifneq ($(OBJTREE),$(SRCTREE)) +CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include +endif + +CPPFLAGS += -I$(TOPDIR)/include +CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ + -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) ifdef BUILD_TAG CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ @@ -192,11 +213,23 @@ export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS ######################################################################### +ifndef REMOTE_BUILD + %.s: %.S - $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$< + $(CPP) $(AFLAGS) -o $@ $< %.o: %.S - $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$< + $(CC) $(AFLAGS) -c -o $@ $< %.o: %.c $(CC) $(CFLAGS) -c -o $@ $< +else + +$(obj)%.s: %.S + $(CPP) $(AFLAGS) -o $@ $< +$(obj)%.o: %.S + $(CC) $(AFLAGS) -c -o $@ $< +$(obj)%.o: %.c + $(CC) $(CFLAGS) -c -o $@ $< +endif + ######################################################################### |