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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 /config.mk
parent24d3d3754634532ae262075484e7c1d00d447152 (diff)
downloadu-boot-linaro-stable-f93286397ed2a7084efb0362a43ee09f11702349.tar.gz
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.mk45
1 files changed, 39 insertions, 6 deletions
diff --git a/config.mk b/config.mk
index b59667a83..3ed7107fb 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
+
#########################################################################