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OK3568 Development Environment Configuration - Ubuntu - 22.04

#硬件24
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The document provides instructions for setting up the OK3568 development environment on Ubuntu 22.04. It includes links to official resources and a virtual machine image. The setup process involves downloading the source code, extracting files, and moving necessary components to speed up system image compilation. Key steps include: 1. **System Image Compilation**: Extract the `OK3568_Linux_fs.tar` and `dl.tar.bz2` files, then move `dl` to the `buildroot` directory. 2. **Cross-Compiling Software**: Set the path for the cross-compiler in the `~/.bashrc` file. 3. **Compiling Libraries**: - **FFmpeg**: Use the `configure` script with specific flags to set the installation path and enable cross-compilation. After configuration, run `make` and `sudo make install`. - **log4cplus**: Similar configuration steps as FFmpeg, ensuring the correct cross-compiler is used. - **ZeroMQ**: Follow the same procedure, specifying the installation path and enabling shared libraries. The document emphasizes the importance of specific configuration flags for successful cross-compilation.

The official materials for OK3568 and the Ubuntu 22.04 virtual machine image are as follows:
File shared via cloud storage: OK3568-Data-Development Virtual Machine

1 System Image Compilation#

Download the source code from the cloud storage, and after extracting, you will get OK3568_Linux_fs.tar. Extract OK3568_Linux_fs.tar and dl.tar.bz2, then move dl to OK3568_Linux_fs/buildroot to speed up the compilation of the system image.
The tutorial for compiling the system image is as follows:
04_Related Code Compilation

2 Cross-Compile and Install Software#

The path for the cross-compiler is OK3568_Linux_fs/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-, configure the environment variable in ~/.bashrc as export PATH="/home/forlinx/3568/OK3568_Linux_fs/prebuilts/gcc/linux-x86/aarch64/gcc-arm-10.3-2021.07-x86_64-aarch64-none-linux-gnu/bin:$PATH".

2.1 ffmpeg-2.4.14#

First, run the configure script in the source code folder.

./configure \
--prefix=/usr/local \
--cross-prefix=aarch64-none-linux-gnu- \
--arch=aarch64 \
--target-os=linux \
--enable-cross-compile \
--disable-static \
--enable-shared \
--pkg-config-flags="--static"
  • --prefix=/usr/local: Specifies the installation path of FFmpeg on the target machine.
  • --cross-prefix=aarch64-none-linux-gnu-: The most critical parameter, it tells the configure script to use aarch64-none-linux-gnu- as the prefix for all compilers and tools.
  • --arch=aarch64: Specifies the target CPU architecture.
  • --target-os=linux: Specifies the target operating system as Linux.
  • --enable-cross-compile: Explicitly enables cross-compilation mode.
  • --disable-static: Compiles only dynamic libraries (.so files), which usually reduces the size of the final files.
  • --enable-shared: Compiles dynamic link libraries.
  • --pkg-config-flags="--static": Prevents pkg-config from trying to find dynamic libraries on the host machine during cross-compilation.
    After successful configuration, execute make and sudo make install, and the compiled library files, header files, and executables will be installed in the /usr/local directory.

2.2 log4cplus-2.0.7#

The configure command is as follows:

./configure --host=aarch64-none-linux-gnu --prefix=/usr/local
  • --host=aarch64-none-linux-gnu: This is the most important parameter, ensuring that the make command will call the correct cross-compiler.
  • --prefix=/usr/local: This parameter specifies the installation path of log4cplus on the target machine. If not specified, the default is also /usr/local.

2.3 zeromq-4.0.8#

The configure command is as follows:

./configure --host=aarch64-none-linux-gnu --prefix=/usr/local --enable-shared --disable-static
  • --host=aarch64-none-linux-gnu: The most critical parameter, it tells the configure script that you are cross-compiling for the aarch64 architecture.
  • --prefix=/usr/local: Specifies the installation path of ZeroMQ on the target machine.
  • --enable-shared: Compiles dynamic link libraries (.so files).
  • --disable-static: Does not compile static libraries (.a files) to reduce the size of the final files.
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