Android requires the following system packages:
flex: This lexical analyzer generator is used to read a given input file for a description of a scanner to generate.
bison: This is a general-purpose parser generator.
gperf: This is a perfect hash function generator.
libesd0-dev: This enlightened sound daemon (dev files) is used to mix digitized audio streams for playback by a single device.
libwxgtk2.6-dev: This package provides GUI components and other facilities for many different platforms.
build-essential: This package contains a list of packages considered fundamental to building Debian packages.
linuxidc.com@lnuxidc-laptop:/$sudo apt-get install flex bison gperf libesd0-dev libwxgtk2.6-dev zlib1g-dev build-essential
安装好jdk 1.5.0
并在/etc/profile中设置好导出的环境变量
# Begin set java environment
export JAVA_HOME=/opt/java/jdk1.5.0_22
export JRE_HOME=/opt/java/jdk1.5.0_22/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
# End set java environment
Unpack i.MX Android Release Package
After you setup a Linux PC, unpack the FSL i.MX Android Release Package using the following commands:
$ cd
/opt (or any other directory you like)
$ tar xzvf
imx-android-r8.tar.gz
$ cd imx-android-r8/code
$ tar xzvf r8.tar.gz
Assume you had unzipped i.MX
Android release package to /opt/imx-android-r8/.
$ cd /opt
/imx
-android
-r8/tool
$ tar xzvf
gcc
-4.1.2-glibc
-2.5-nptl
-3.tar.gz
-C /opt
Now you can find your cross compiler at /opt/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin
设置要导出的编译器相关的环境变量
#Freescale CrossCompiler Env
export ARCH=arm
export CROSS_COMPILE=/opt/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-
export PATH=/opt/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin:$PATH
#
Prebuilt Image for uboot :
i.MX51 BBG3 board
Booting from SD
bootloader : imx51_BBG/u-boot.bin
kernel: imx51_BBG/uImage
Android file system:
"/": imx51_BBG/SD/uramdisk.img
"/system": imx51_BBG/SD/system.img
"/data" : imx51_BBG/SD/userdata.img. Not provided as it's empty.
"/recovery" : imx51_BBG/SD/recovery.img
Booting from TFTP/NFS
bootloader :
bootloader in SD: Same as "Booting from SD"
bootloader in SPI NOR: imx51_BBG/u-boot.bin
kernel: same as "Booting from SD"
Android file system: all in imx51_BBG/NFS/android_fs.tar.gz
下面开始repo代码打patch
Get Android Source Code (Android /Kernel /uboot )
the Android source code is maintained as more than 100 gits in an Android repository (Visit GitWeb from browser).
To get the Android source code from Google repo , follow the steps:
Assume you had unzipped i.MX
Android release package to /opt/imx-android-r8/.
$ cd
~
$ mkdir
myandroid
$ cd
myandroid
$ curl > ./repo
$ chmod
a+x
./repo
$ ./repo
init -u git://android.git.kernel.org/platform/manifest.git
-b eclair
$ cp /opt/imx-android-r8/code/r8/default.xml .repo/manifests/default.xml
(To avoid loading unnecessary gits
from Google repo
, meanwhile load some gits
from Google repo
which is not included in default manifest)
$ ./repo
sync
Get a clean kernel source code from kernel.org:
$ cd
myandroid
$ git
clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.31.y.git kernel_imx
If you use uboot as your bootloader , then you need get a clean source code base from the original git :
$ cd myandroid/bootable/bootloader
$ git clone git://git.denx.de/u-boot.git uboot-imx
Patch Code for i.MX
Apply all i.MX Android patches using following steps:
Assume you had unzipped i.MX
Android release package to /opt/imx-android-r8/.
$ cd
~/myandroid
$ . /opt/imx-android-r8/code/r8/and_patch.sh
$ help
Now you should see "c_patch
" function is available for you
$ c_patch /opt/imx-android-r8/code/r8 imx_r8
Here "/opt/imx-android-r8/code/r8" is the location of the patches (i.e. directory created when you unzip release package)
"imx_r8" is the branch which will be created automatically for you to hold all patches (only in those existing Google gits
).
You can choose any branch name you like instead of "imx_r8".
If everything is OK, "c_patch
" will generate the following output to indicate successful patch:
**************************************************************
Success: Now you can build android code for FSL i.MX
platform
**************************************************************
Note: The patch script ( and_patch.sh ) utalizes some basic utilities like awk/sed . If they are not available on your LinuxPC , install them in advance.
Build uboot
$ cd ~/myandroid/bootable/bootloader/uboot-imx
$ echo $ARCH && echo $CROSS_COMPILE
Make sure you have those 2 environment variables set
Command to build for i.MX51 BBG3 board is:
$ make mx51_bbg_android_config
$ make
"u-boot.bin " is generated if you have a successful build.