[An Introduction to GCC 学习笔记] 05 Make外部库
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1 Recompiling and Relinking
- In general, linking is faster than complition - in a large project with many source files, recompiling only those that have been modified can make a significant saving.
- The process of recompiling only the modified files in a project can be automated using GNU make.
2 make
请参考:C/C++ Make教程
3 Linking With External Libraries
- A library is a collection of precompiled object files which can be linked into programs. The most common uses of libraries is to provide system functions, such as the square root function sqrt found in the C math library.
- Libraries are typically stored in special archive files with the extension ‘.a’, referred to as static libraries. They are created from object files with a separate tools, the GNU archiver ar, and used by the linker to resolve references to functions at compile-time.
- The standard system libraries are usually found in the directories ‘/usr/lib’ and ‘/lib’.
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