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How to install the source code of linux? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something.

Almost all software on inux is licensed by GPL, so almost all software will provide source code.

For a software to be executed on Linux, it must be a binary file, so when we get the software source code, we need to compile it into a binary file to run on Linux.

Software compilation process

Compiling the source code into binaries that can be run by Linux takes two steps:

1. Use the gcc compiler to compile the source code into an object file

two。 Again use the gcc compiler to link the target file to a binary file

The process seems simple, but in fact it is not. The source code of a software is often encapsulated in multiple source files, in addition, these files have complex dependencies, and compilation needs to be carried out strictly in the specified order, which undoubtedly increases the difficulty of compilation. Fortunately, the make command can help us simplify the compilation process.

The whole compilation process is condensed into the Makefile file (telling the make command how to compile and link the program). When the make command is executed, make will look for the Makefile file in the current directory and complete the compilation process according to the requirements in the file.

The Makefile file is generated by the configure command. When executing the configure command, configure will dynamically generate a Makefile file suitable for the system according to the current system environment for use by the make command.

Linux source code installation steps

Get the source code

Download the source code of the software to / usr/local/, and extract it.

View INSTALL and README files

After decompression, check the INSTALL and README files, which describe in detail the installation method and matters needing attention of the software.

Create a Makefile file

Execute the configure command to generate the Makefile file.

Compile

Execute the make clean;make command to compile the source code into a binary file.

The PS:make clean command is used to clear the target file generated by the last compilation. This step is optional, but to ensure the success of the compilation, it is better to add it. Prevent compilation failure due to residual object files in the software.

Installation

Execute the make install command to install the compiled binaries in the previous step to the specified directory.

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