CODEWITHSUNDEEP
c++cmake
Dugas
Dugas

Reputation: 560

CMake: suppress ALL warnings

I am trying to do something extremely simple:

I have to work on a C++ project that raises a lot of compilation warnings. Temporarily, I want to only see errors when I run make. What do I need to add to my CMakeLists.txt to make that happen? The simpler, the better.

Upvotes: 13

Views: 21370

Answers (2)

ceztko
ceztko

Reputation: 15237

Nobody properly cared about MSVC so here is my answer, which also make use of add_compile_options:

# Hide all warnings for 3rdparty code
if (MSVC)
    add_compile_options(/W0)
else()
    add_compile_options(-w)
endif()

If you try to use -w or /w with MSVC you'll get plenty of Command line warning D9025: overriding '/W1' with '/w' warnings or similar ones, which can't be really fixed. In general it seems /W[1-4] flags can be overridden only with a similar /W flag

Upvotes: 0

Dugas
Dugas

Reputation: 560

It turns out the answer was to simply add the line

add_definitions(-w)

To CMakeLists.txt

It took me a lot longer than it should have to find this simple answer.

Upvotes: 18

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