Red Hat Summit4.2. Methods of creating software
You can convert the human-readable source code into machine code by using one the following methods:
- Natively compile software.
- Interpret software by using a language interpreter or language virtual machine. You can either raw-interpret or byte-compile software.
4.2.1. Natively compiled software
Natively compiled software is software written in a programming language that compiles to machine code with a resulting binary executable file. Natively compiled software is standalone software.
Natively compiled RPM packages are architecture-specific.
If you compile such software on a computer that uses a 64-bit (x86_64) AMD or Intel processor, it does not run on a 32-bit (x86) AMD or Intel processor. The resulting package has the architecture specified in its name.
4.2.2. Interpreted software
Some programming languages, such as Bash or Python, do not compile to machine code. Instead, a language interpreter or a language virtual machine executes the programs' source code step-by-step without prior transformations.
Software written entirely in interpreted programming languages is not architecture-specific. Therefore, the resulting RPM package has the noarch string in its name.
You can either raw-interpret or byte-compile software written in interpreted languages:
Raw-interpreted software
You do not need to compile this type of software. Raw-interpreted software is directly executed by the interpreter.
Byte-compiled software
You must first compile this type of software into bytecode, which is then executed by the language virtual machine.
注記Some byte-compiled languages can be either raw-interpreted or byte-compiled.
Note that the way you build and package software by using RPM is different for these two software types.
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