Build configurations for compilers

Two types of build configurations

1. debug used for developing the applications
2. release to create production ready build.

Debug build

• -ggdb option is used to enable debug build.

Release build

• -O2 -DNDEBUG is used to enable release bulids.
• -O# flag is used for optimizations.
  • -O1 is for debug level optimization. this is the default value.
  • -O2 is for release level optimizations.
  • -O3 adds additional optimizations that may or may not perform better than -O2.

Note

-O2 is alphabet “O” not “0”.

References

1. https://www.learncpp.com/cpp-tutorial/configuring-your-compiler-build-configurations/