[Day 16] - Static and Dynamic Libraries (ar, objdump, ld, ldd) - Crash Course in C Programming

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►Lesson Description: In this lesson I show you how to create both static and shared libraries on linux. Static and shared libraries are both ways to allow for code reuse, and another way to break large projects into smaller more manageable pieces. Using libraries can also have advantages in our build systems, by allowing for separate compilation for instance.

00:00 introduction
00:50 ldd tool usage
2:28 Physical structure of project
3:12 Header guards
5:08 The include directory (-I)
6:30 Building individual .o object files as static library
10:10 Creating two .o files.
11:50 Compiling with two .o files
12:18 The advantage of separate compilation of our .o files
13:55 The archive (ar) tool.
17:00 The advantage and use case of shared object (.so) files
18:10 Building a shared library with position independent code
20:30 Understanding include and linking errors (undefined reference)
22:48 Understanding format of how to link libraries with -l (lowercase L)
25:40 LD_LIBRARY_PATH to utilize our shared libraries
27:40 Summary
31:26 dlopen preview
32:11 Conclusion

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