How Can I Create a Single Static Library from Multiple Static Libraries and Optimize its Size?

Creating a Static Library That Incorporates External Libraries

When developing code that relies on multiple static libraries, it's often desirable to package the code into a distinct static library for distribution. However, directly linking a new static library to existing static libraries may result in errors due to missing symbols.

To address this issue, it's necessary to create a new static library that encompasses the original library along with the functionality it requires from the external libraries. This can be achieved using a tool like 'ar' (on Unix systems) to concatenate multiple libraries into a single entity.

Optimizing Library Size Through Symbol Selection

By merging libraries, it's possible to eliminate unnecessary symbols and reduce library size. To do this manually, one needs to identify and select only the required object files from the external libraries. While it's challenging, it can provide significant size reduction.

Note:

While combining libraries can be straightforward, it's important to keep in mind the portability implications as different systems may have different symbol linkage conventions. Thorough testing is recommended to ensure compatibility across platforms.

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