python移植到arm平台

主要参考了两篇博文：http://randomsplat.com/id5-cross-compiling-python-for-embedded-linux.html和http://wiki.woodpecker.org.cn/moin/LeoJay/HOWTOCrossCompilePythonForARM

1.  交叉编译Python

　　见Cross Compiling Python for Embedded Linux

CC=arm-linux-gcc CXX=arm-linux-g++ AR=arm-linux-ar RANLIB=arm-linux-ranlib ./configure --host=arm-linux --build=x86_64-linux-gnu --prefix=/root/tftpboot/Python-2.7.3

make HOSTPYTHON=./hostpython HOSTPGEN=./Parser/hostpgen BLDSHARED="arm-linux-gcc -shared" CROSS_COMPILE=arm-linux- CROSS_COMPILE_TARGET=yes HOSTARCH=arm-linux BUILDARCH=x86_64-linux-gnu

make install HOSTPYTHON=./hostpython BLDSHARED="arm-linux-gcc -shared" CROSS_COMPILE=arm-linux- CROSS_COMPILE_TARGET=yes prefix=/root/tftpboot/Python-2.7.3

2. PC与开发板文件传输

　　tftp： tftp -l path/to/filename -r filename -g 192.168.*.*

3. 文件拷贝

• 　　cp /your/path/bin/python2.7 /bin/python     

  or  export PATH=/your/path/bin/:$PATH   # OK210开发板会报错

•        拷贝serial、django等python库拷贝到/lib/python2.7/site-packages/目录下。

4. 设置Python相关环境变量

　　以Python2.7.x为例。

export PYTHONHOME=/your/path/
#export PYTHONPATH=$PYTHONHOME:$PYTHONHOME/lib/python2.7:$PYTHONHOME/lib:$PYTHONHOME/lib/python2.7/site-packages
#export PATH=$PATH:$PYTHONHOME:$PYTHONPATH

5. sqlite3

Building SQLLite and other dependancies

Thanks to Lothsahn’s 2.7.3 patch, it is now possible to build sqlite3, bz2, gz, ssl and ctypes.  Lothsahn provides the following instructions:

To do the compilation, the dependencies must be in the include and lib folder one path up from the python install.   For example:

<base directory>/include <– header files go here

<base directory>/lib <– shared object files go here

/Python-2.7.3 <—Python sources go here during compile

Dependencies include libffi, sqlite, openssl, bzip2, zlib, etc.

1. 按照上面Paul Gibson给的Cross Compiling Python for Embedded Linux , 但是import sqlite3会报错，原因暂不明。

试了一些解决办法，尝试未果，可能是lib_dir路径问题：

• 　　Removing other search paths from the setup.py, but the one i had the ARM compiled library in, made it work. 测试也未通过。

http://stackoverflow.com/questions/12385634/shared-library-sqlite3-so-not-found-when-importing-sqlite3-on-python-2-6-6

• 　　http://stackoverflow.com/questions/10654707/no-module-named-zlib-found
• 　　http://stackoverflow.com/questions/6171210/building-python-and-more-on-missing-modules

3. debian平台成功。 http://www.friendlyarm.net/forum/topic/2731

参考：

1. cross compile python, busybox, flex, bash and so on, ARM cross-compiling howto

2. 网上一个给力的例子，python-2.6.6:

Click and run python cross compiling for Embedded ARM Linux

3. 在友善之臂Linux系统中使用python http://112.124.9.243/?p=285

4. 移植python3到ARM平台的OK6410开发板 http://www.51bigfool.com/%E7%A7%BB%E6%A4%8Dpython3%E5%88%B0arm%E5%B9%B3%E5%8F%B0%E7%9A%84ok6410%E5%BC%80%E5%8F%91%E6%9D%BF.html

附：

• 　用strip处理过后，将去掉其中的调试信息，执行文件大小也将小很多。命令如下：

　　　　# arm-linux-strip  file

　　　　其中file是用arm-liunux-gcc编译生成的二进制文件。

•    ./configure --host=arm-linux CC=arm-linux-gcc AR=arm-linux-ar STRIP=arm-linux-strip RANLIB=arm-linux-ranlib
•    sqlite3的交叉编译
  • 　　# CC=arm-linux-gcc ./configure --prefix=/your/path/sqlite-3.7.14 --host=arm-linux --disable-tcl

    　　#make && make install