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Porting Software

Porting Software. by Thomas Himel. What is Porting?. When software is developed, it is intended to execute in a specific computing environment. Porting is adapting software to execute in a new environment. Different Environments. CPU Architecture x86, ARM, Cell Operating System

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Porting Software

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  1. Porting Software by Thomas Himel

  2. What is Porting? • When software is developed, it is intended to execute in a specific computing environment. • Porting is adapting software to execute in a new environment.

  3. Different Environments • CPU Architecture • x86, ARM, Cell • Operating System • Windows, Linux, Android • Compiler, loader, preprocessor

  4. Portability • Software is portable when the cost of porting it is less than the cost of rewriting it from scratch. • System standards make software more portable. • Desktop systems mostly use x86 CPU and Windows, OS X, or Linux operating system.

  5. Portability (contd.) • Abstraction in code development • Compliance with international standards • Usually sacrifice optimization for target system

  6. Software Modification • Software usually needs be adapted to run correctly on the target platform. • Common modifications: • Libraries or OS functions not available on target platform • Different paths and invalid file naming conventions • Different methods of storing values

  7. Software Modification (contd.) • Third-party tools automatically solve some porting issues. • High-level compilers output source code in C or C++. • Autotools reconfigures code to adapt to Unix-based systems.

  8. END

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