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This article mainly explains "how to transplant Python to the IMX6ULL development board". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to transplant Python to the IMX6ULL development board".

92.1 Source Code package

The source packages that come with the documentation are: "python-2.7.3 source code and patches. Zip"-python zip packages and patch files

"install_python.tar"-compiled sqlite library file

"sqlite-autoconf-3240000.tar.gz"-the source file of sqlite

"Test program"-python test routine.

Go to the Python official website to download the source code package 2.7.3, address or use the source code provided in the compressed package

Copy the Python-2.7.3.tar.bz2 and patch Python-2.7.3-xcompile.patch to the home/miniLinux directory of the ubuntu system through ssh, and use the command tar-vxf Python-2.7.3.tar.bz2 to decompress the source code package to get the directory Python-2.7.3.

92.2 compilation

92.2.1 compile the host interpreter

Compiling the embedded version of Python requires the interpreter to parse setup.py to compile the module of Python, so you need to compile the interpreter of HOST first.

Enter the unzipped "Python-2.7.3" directory and execute the command ". / configure" to run the configuration file.

The Makefile file is generated after execution, as shown in figure 92.2.1.1:

Execute the command "make python Parser/pgen" to compile the PC version of python Parser/pgen, as shown in figure 92.2.1.2:

Execute the command "mv python hostpython" to move the generated PC version to hostpython

Execute the command "mv Parser/pgen Parser/hostpgen" to move the generated PC interpreter to Parser/hostpgen.

Execute the command "make distclean" to clear unnecessary files.

92.2.2 arm patch cross-compiled patch we put it in the python directory and execute the command patch-p1

92.2.3 Cross-compilation configuration

Execute the following command under the "/ home/ubuntu/python/Python-2.7.3" directory to set up:

Set up cross editor CC=arm-none-linux-gnueabi-gcc

Set C++ cross compiler CXX=arm-none-linux-gnueabi-g++

Set up AR AR=arm-none-linux-gnueabi-ar

Set up RANLIB RANLIB=arm-none-linux-gnueabi-ranlib

92.2.4 compilation and installation testing

Copy the compiled sqlite3 library "install_python.tar" provided in the compressed package to / home/ubuntu/python through ssh, and then decompress it to get "install_python".

Users can also compile the sqlite3 library themselves, and the fourth section of this article introduces the compilation of the library.

Enter Python-2.7.3, execute the command "vim setup.py" to modify setup.py, and find line 1044 to change paths to the path where install_python is located, as shown in figure 92.2.4.2.

Navigate to line 1099 and modify the path as shown in figure 92.2.4.3.

Execute the command ". / configure-- host=arm-none-linux-gnueabi-- prefix=/python" to generate a Makefile that conforms to the cross-compiler, as shown in figure 92.2.4.4.

Execute the make command to compile "make HOSTPYTHON=./hostpythonHOSTPGEN=./Parser/hostpgen BLDSHARED=" arm-none-linux-gnueabi-gcc-shared "

"CROSS_COMPILE=arm-none-linux-gnueabi- CROSS_COMPILE_TARGET=yes" will indicate that the module is missing and ignore

After success, please see figure 92.2.4.6:

Execute the following command to install to the specified folder "make install HOSTPYTHON=./hostpython"

BLDSHARED= "arm-none-linux-gnueabi-gcc-shared" CROSS_COMPILE=arm-nonelinux-gnueabi-

CROSS_COMPILE_TARGET=yes prefix=/home/ubuntu/python/Python-2.7.3/_install ".

Where prefix=/home/ubuntu/python/Python-2.7.3/_install is the specified installation directory, the user changes according to the actual situation.

After success, please see figure 92.2.4.8:

Use the command "ls _ install" to view the results:

Copy the sqlite3 library file to "/ Python-2.7.3/_install/lib/":

Cp install_python/lib/libsqlite3* Python-2.7.3/_install/lib/

Package the whole _ install directory, copy it to the "/ data" directory on the development board, and then decompress it. The author uses the root file system mounted by NFS, and users can also copy it through the NFS mount directory or USB disk.

Go to the _ install directory and set the environment variable using the following command: "export export LD_LIBRARY_PATH=/data/_install/libLD_LIBRARY_PATH"

Thank you for reading, the above is the content of "how to transplant Python to IMX6ULL development board". After the study of this article, I believe you have a deeper understanding of how to transplant Python to IMX6ULL development board, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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