Can I check compiler options in a header file

Question

0.00/5 (No votes)

See more:

C++

C

Is it possible to add a line to a header that will display a compile error if a certain compiler switch is not set?

Posted 12-Feb-14 8:09am

softwaremonkey

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Vedat Ozan Oner · Answer 1 · 2014-02-12T09:51:00

Solution 1

yes possible. you can do this like:

XML

$ cat 1.c
#include <stdio.h>

#ifndef TEST
#error err
#endif

int main() {
 return 0;
}

error if no TEST define

$ gcc 1.c
1.c:4:2: error: #error err

clear if -D TEST

$ gcc 1.c -D TEST

Posted 12-Feb-14 9:51am

Vedat Ozan Oner

Comments

Vedat Ozan Oner 12-Feb-14 17:22pm

I'm thinking that I might have misunderstood the question. is my answer a solution for your question?

Sergey Alexandrovich Kryukov 12-Feb-14 18:09pm

I cannot imagine that OP could mean something else, not covered by this answer. It should be the answer, recommended to be accepted formally. My 5.
—SA

Vedat Ozan Oner 12-Feb-14 18:38pm

else my answer would be no :) thanks by the way.