After hard coding your program hour by hour (sometime, it becomes year by year :) ), one of the most uncomfortable time is compiling it into executable file. As usually, we are going to compile a program by the hardest way to do it, just because it will make us knows that in some case,
gcc is really a hero :))
The post's content is about compiling a C program by manual way. In that program, we use an external lib, defined by yourself.