Eterno introduces the Sleepless Blood series and the topic of the C++ compiler process.

• Eterno welcomes viewers back to his Sleepless Blood series.
• The focus of the video is to explain how the C++ people applause compiler operates.

A brief overview of compiling and linking in C++ is given.

• Compiling and linking are two main operations needed to transform C++ text files into an executable binary.
• The compiler's job is to convert text files into object files; linking is covered in another video.

Eterno explains the pre-processing stage of the compiler.

• Pre-processing evaluates directives like include, resulting in an abstract syntax tree.
• An example using include is demonstrated to show how it essentially copies and pastes file contents.

The process of compiling an abstract syntax tree to machine code is explained.

• The compiler generates machine code that CPUs will execute, and stores constant variables.

The role of optimization in the compilation process is discussed.

• Optimization removes unnecessary code and improves performance.
• An example of optimization shows the compiler simplifying code and removing redundant function calls.

Eterno wraps up the video with a summary and mentions future advanced topics.

• A basic understanding of the C++ compiler is important for debugging and learning advanced topics.
• Viewers are encouraged to follow Eterno on social media and support him on Patreon.