Firstly follow officail wiki to build ubuntu14.04 environment.
New 16.04 apt source cannot provide openjdk-7 ，add up a source
sudo add-apt-repository ppa: openjdk-r/ppa ###behind colon no need space
sudo apt-get update
sudo apt-get install openjdk-7-jdk
After installed , check the version of jdk present
sudo update-alternatives --config java
sudo update-alternatives --config javac
Android complie
error occure：
clang: error: linker command failed with exit code 1 (use -v to see invocation)
build/core/host_shared_library_internal.mk:51: recipe for target ‘out/host/linux-x86/obj32/lib/libart.so’ failed
make: *** [out/host/linux-x86/obj32/lib/libart.so] Error 1
reason：ubuntu16.04 clang problem
1.Off clang，gedit file art/build/Android.common_build.mk ,find out WITHOUT_HOST_CLANG
diff：
# Host.
ART_HOST_CLANG := false
ifneq ($(WITHOUT_HOST_CLANG),true)
# By default, host builds use clang for better warnings.
- ART_HOST_CLANG := true+ ART_HOST_CLANG := false
endif
- rebuild env
sudo apt install git-core gnupg flex bison gperf build-essentialzip
curl zlib1g-dev gcc-multilib g+±multilib libc6-dev-i386lib32ncurses5-dev
x11proto-core-dev libx11-dev lib32z-dev ccache libgl1-mesa-dev
libxml2-utils xsltproc unzip m4 && sudo apt-get update
No need to make clean, continue make again .