Does Ada have a preprocessor?
The answer to your question is no, Ada does not have a pre-processor that is built into the language. That means each compiler may or may not have one and there is not “uniform” syntax for pre-processing and things like conditional compilation. This was intentional: it’s considered “harmful” to the Ada ethos. There are almost always ways around a lack of a preprocessor but often times the solution can be a little cumbersome. For example, you can declare the platform specific functions as ‘separate’ and then use build-tools to compile the correct one (either a project system, using pragma body replacement, or a very simple directory system… put all the windows files in /windows/ and all the linux files in /linux/ and include the appropriate directory for the platform). All that being said, GNAT realized that sometimes you need a preprocessor and has created gnatprep. It should work regardless of the compiler (but you will need to insert it into your build process). Similarly, for simp
