How to Compile Android(安卓)on Ubuntu (12.04)

I ran into a few errors when I tried to compile Android on my Ubuntu 12.04 64-bit laptop. Here are my notes on fixing them and compiling successfully:

Wrong Java Version

I have the Java 6 OpenJDK, version 1.6.0_24. This meets the android Java requirement for 1.6.0, but I found (later in the build process) that Android really needs to be built by Sun’s Java SDK. In the meantime, the _24 suffix doesn’t check out in Android’s makefile, which produces the errorYou are attempting to build with the incorrect version of javabefore exiting:

                           1                            2                            3                            4                            5                            6                            7                            8                            9                            10                            11                            12                 

                           Checking build tools versions...                            ************************************************************                            You are attempting to build with the incorrect version                            of java.                                     Your version is: java version "1.6.0_24".                            The correct version is: Java SE 1.6.                                     Please follow the machine setup instructions at                            http://source.android.com/source/download.html                            ************************************************************                            build/core/main.mk:131: *** stop.Stop.                 

Commenting out the $(error stop) statement from build/core/main.mk on line 131 will allow compilation to proceed:

                           131                            132                  

                           # $(error stop)                            endif                  

make will display the error message, but continue compiling.However, compiling with OpenJDK will probably create problems later in the build process(inout/target/common/obj/APPS/CtsVerifier_intermediates/classes-full-debug.jar). To fix the problems, Sun’s Java SDK will need to be installed.

Installing the Sun Java 6 JDK in Ubuntu 12.04

To fix themake: *** [out/target/common/obj/APPS/CtsVerifier_intermediates/classes-full-debug.jar] Error 41, get the most recent Sun JDK fromhere. Once you’ve downloaded it, install it and run update-alternatives so your system uses the Sun JDK:

                           1                            2                            3                            4                            5                            6                            7                            8                            9                            10                            11                 

                           $ chmod +x jdk-6u33-linux-x64.bin                            $ sudo ./jdk-6u33-linux-x64.bin                            $ sudo mv jdk1.6.0_32 /usr/lib/jvm/                                     $sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.6.0_33/bin/java 1                            $ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.6.0_33/bin/javac 1                            $ sudo update-alternatives --install /usr/bin/javaws javaws /usr/lib/jvm/jdk1.6.0_33/bin/javaws 1                                     $ sudo update-alternatives --config java                            $ sudo update-alternatives --config javac                            $ sudo update-alternatives --config javaws                 

To verify that the installation was successful, check Java’s version. It should now show that the Sun JDK is running instead of IcedTea:

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                           $ java -version                            java version "1.6.0_33"                            Java(TM) SE Runtime Environment (build 1.6.0_33-b04)                            Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03, mixed mode)                  

To revert the changes after Android has been compiled, run update-alternatives to switch back to OpenJDK.

error: “_FORTIFY_SOURCE” redefined [-Werror]

This is a well-known error caused by the redefinition of _FORTIFY_SOURCE inbuild/core/combo/HOST_linux-x86.mk. It doesn’t happen on all systems. In fact, the error didn’t appear for most people in Ubuntu 11.04, but it started showing up after 11.10.

The error can be fixed by changing the HOST_GLOBAL_CFLAGS on line 56 from

1	HOST_GLOBAL_CFLAGS += -D_FORTIFY_SOURCE=0

1	HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0

Undefining and redefining the _FORTIFY_SOURCE macro somehow fixes the issue. The “_FORTIFY_SOURCE redefined” error was initially discovered by aCyanogenMod developer.

external/mesa3d/src/glsl/linker.cpp:1394:49: error: expected primary-expression before ‘,’ token

I was compiling Android with gcc/g++ 4.6. This error can be solved by downgrading to gcc/g++4.4

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                           $ sudo apt-get install gcc-4.4 g++-4.4 g++-4.4-multilib                                     $ sudo unlink /usr/bin/gcc                            $ sudo ln -s /usr/bin/gcc-4.4 /usr/bin/gcc                                     $ sudo unlink /usr/bin/g++                            $ sudo ln -s /usr/bin/g++-4.4 /usr/bin/g++                 

To reverse the changes when you’re done with them, reverse the instructions:

                           1                            2                            3                            4                            5                  

                           $ sudo unlink /usr/bin/gcc                            $ sudo ln -s /usr/bin/gcc-4.6 /usr/bin/gcc                                              $ sudo unlink /usr/bin/g++                            $ sudo ln -s /usr/bin/g++-4.6 /usr/bin/g++                  

If your system is like mine, Android should have compiled successfully. You can test the build by running theemulatorcommand, which is automatically added to your path after compilation.

The result:

The Emulator, running the finished product

Wrong Java Version

Installing the Sun Java 6 JDK in Ubuntu 12.04

error: “_FORTIFY_SOURCE” redefined [-Werror]

external/mesa3d/src/glsl/linker.cpp:1394:49: error: expected primary-expression before ‘,’ token

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