GCC #pragma to stop compilation

Question

Is there a GCC pragma directive that will stop, halt, or abort the compilation process?

I am using GCC 4.1, but I would want the pragma to be available in GCC 3.x versions also.

Answer 1

You probably want #error:

$ cd /tmp $ g++ -Wall -DGoOn -o stopthis stopthis.cpp $ ./stopthis  Hello, world  $ g++ -Wall -o stopthis stopthis.cpp  stopthis.cpp:7:6: error: #error I had enough 

File stopthis.cpp

#include <iostream>  int main(void) {   std::cout << "Hello, world\n";   #ifndef GoOn     #error I had enough   #endif   return 0; } 

Answer 2

I do not know about a #pragma, but #error should do what you want:

#error Failing compilation 

It will terminate compilation with the error message "Failing compilation".