How to build Gingerbread on 32 bit Ubuntu OS

Make following simple changes to build Gingerbread on 32 bit Ubuntu.
1. In build/core/main.mk change
 ifneq (64,$(findstring 64,$(build_arch)))
 to
 ifneq (i686,$(findstring i686,$(build_arch)))
 (Note that there are two changes on that line)
 2. In the following files
 external/clearsilver/cgi/Android.mk
 external/clearsilver/java-jni/Android.mk
 external/clearsilver/util/Android.mk
 external/clearsilver/cs/Android.mk
 change
 LOCAL_CFLAGS += -m64
 LOCAL_LDFLAGS += -m64
 to
 LOCAL_CFLAGS += -m32
 LOCAL_LDFLAGS += -m32

 3. Install following packages (in addition to packages you must have
 installed for Froyo Build.)

 sudo apt-get install lib64z1-dev libc6-dev-amd64 g++-multilib
 lib64stdc++6

 4. Install Java 1.6
 sudo apt-get install sun-java6-jdk