2.2.3. Enabling debugging of C and C++ applications with the GCC

Procedure

1. Compile and link your code with the -g option to generate debugging information:

   $ gcc ... -g ...

2. Optional: Set the optimization level to -Og:

   $ gcc ... -g -Og ...

   Compiler optimizations can make executable code hard to relate to the source code. The -Og option optimizes the code without interfering with debugging. However, be aware that changing optimization levels can alter the program’s behavior.

3. Optional: Use -g for moderate debugging information, or -g3 to include macro definitions:

   $ gcc ... -g3 ...