When does GCC define NDEBUG?

Question

Possible Duplicate:
Where does the -DNDEBUG normally come from?

I am using assertions in my code, but I don't know if they will trigger, because I don't know if NDEBUG is defined or not. Am I supposed to to specify the -DNDEBUG explicitly during compilation?

Duplicate of http://stackoverflow.com/questions/1878645/where-does-the-dndebug-normally-come-from — MikeD, Jul 02 '10 at 15:45
you can also refer : https://stackoverflow.com/questions/7724569/debug-vs-release-in-cmake — parasrish, Nov 24 '17 at 15:02

score 16 · Answer 1 · answered Jul 02 '10 at 15:48

16

Yes. GCC by itself does not set that flag. It is usually set by the makefile generator like Automake, CMake or QMake.

answered Jul 02 '10 at 15:48

Gianni

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... but when/how do make tools know to set `-NDEBUG`? – einpoklum Oct 04 '16 at 15:22
build targets ? – Asu Jan 10 '17 at 19:10
use `gcc`'s comman-line agruments – Sohail Si Feb 08 '18 at 18:07

When does GCC define NDEBUG?

1 Answers1