add cgpt framework and attribute support.

src/platform/vboot_reference/Makefile

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 export CC ?= gcc
 export CFLAGS = -Wall -DNDEBUG -O3 -Werror
 export TOP = $(shell pwd)
 export INCLUDES = \
         -I$(TOP)/common/include \
         -I$(TOP)/cryptolib/include \
         -I$(TOP)/misclibs/include \
         -I$(TOP)/cgptlib
 
 SUBDIRS=common cgptlib cryptolib misclibs vfirmware vkernel utility tests
 
 all:
-        for i in $(SUBDIRS); do \
-        ( cd $$i ; $(MAKE)) ; \
+        set -e; \

[Bill Richardson, 2010/05/20 16:51:15]

That's not parallelizable. Use this instead:

all: $(foreach DIR,$(SUBDIRS),$(DIR)-subdir)

%-subdir :
        $(MAKE) -C $(subst -subdir,,$@) $(MAKECMDGOALS)

[Louis, 2010/05/21 03:43:21]

This cannot be parallelized because we need to compile common first, then *lib,
then rest binaries.

+                for i in $(SUBDIRS); do \
+        make -C $$i; \
         done
 
 clean:
+        set -e; \

[Bill Richardson, 2010/05/20 16:51:15]

clean: $(foreach DIR,$(SUBDIRS),$(DIR)-subdir) 

[Louis, 2010/05/21 03:43:21]

This cannot be parallelized because our build system uses "make clean all" and
accidentally triggers 'make all' in '%-subdir:'.

         for i in $(SUBDIRS); do \
-        ( cd $$i ; make clean) ; \
+                make -C $$i clean ; \
         done