Macro to turn off printf statements

Question

What MACRO can be used to switch off printf statements, rather than removing them all for deployment builds, I just want to switch them off, skip them, ignore them.

Answer 1

I use to prefix the debug printf()s (not all of them) with PDEB.

For the debug builds, I compile with -DPDEB= (nothing)

For the release builds, I compile with -DPDEB="0&&" or -DPDEB="0 && "

That way, the following code (test.c):

#include 

void main(void) {

        printf("normal print\n");

        PDEB printf("debug print\n");
}

outputs: either (in release mode): normal print

either (in debug mode): normal print debug print

Ideally, one could aim for turning the PDEB into the "//" (comments mark), except that this is not possible under the standard pre-/processing chain.