Clion How to Add Debug Flags?

Question

I used to compile my program like this:

g++ -std=c++11 –DNDEBUG –Wall *.cpp

Now I moved to use Clion, where it has the following CMakeLists.txt, can someone kindly help me on how to add the above flags to it? (Already added C++11 flag):

cmake_minimum_required(VERSION 3.20)
project(DS_WET1_PART1)

set(CMAKE_CXX_STANDARD 11)

add_executable(DS_WET1_PART1 main1.cpp library1.cpp library1.h linked_list.h node.h)

If related I'm working on macOS

`NDEBUG` is already defined in Release, MinSizeRel, and RelWithDebInfo configuration types. Warning flags are best added by setting CMAKE_CXX_FLAGS in a preset / the CLion settings, rather than hardcoding it. — Alex Reinking, Aug 20 '21 at 16:04
You should not set CMAKE_CXX_STANDARD, either. Instead write `target_compile_features(DS_WET1_PART1 PRIVATE cxx_std_11)`. — Alex Reinking, Aug 20 '21 at 16:06
Does this answer your question? [Modern way to set compiler flags in cross-platform cmake project](https://stackoverflow.com/questions/45955272/modern-way-to-set-compiler-flags-in-cross-platform-cmake-project) — Alex Reinking, Aug 20 '21 at 16:33

Hatted Rooster · Accepted Answer · 2021-08-20T11:57:47.533

0

Globally, you can use :

add_compile_definitions(NDEBUG)
add_compile_options(-Wall)

Otherwise, use the target specific calls:

target_compile_definitions(DS_WET1_PART1 PUBLIC NDEBUG)
target_compile_options(DS_WET1_PART1 PUBLIC -Wall)

edited Aug 20 '21 at 11:57

answered Aug 20 '21 at 11:56

Hatted Rooster

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what is "NDEBUG"? – Dano Aug 20 '21 at 11:57
@Dano That's your `-DNDEBUG` preprocessor definition. – Hatted Rooster Aug 20 '21 at 11:58
DNDEBUG != NDEBUG – Dano Aug 20 '21 at 12:08
@Dano Yes it is. In your command the first part, `-D` means -> define a directive. The actual directive is `NDEBUG`. that's why I only add `NDEBUG`. – Hatted Rooster Aug 20 '21 at 12:12
*DNDEBUG != NDEBUG* The compiler flag `-DNDEBUG` is *as if* the compile had `#define NDEBUG 1` at the very beginning. – Eljay Aug 20 '21 at 12:33
You should not add flags without compiler checks. This breaks MSVC for no discernable reason. You should also never use directory commands like `add_compile_options` or `add_compile_definitions` in new code. – Alex Reinking Aug 20 '21 at 16:09

Clion How to Add Debug Flags?

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