problems with sdl compilation on Mac OS

[BSVogler]

Why I try to compile with cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_PYTHON=ON -DBUILD_JAVA=ON -DBUILD_LUA=ON and make I get a lot of SDL errors. The first error is:

In file included from ./ViZDoom/src/vizdoom/src/oplsynth/music_opldumper_mididevice.cpp:37: In file included from ./ViZDoom/src/vizdoom/src/sound/i_musicinterns.h:20: In file included from ./ViZDoom/src/vizdoom/src/oplsynth/opl_mus_player.h:1: In file included from ./ViZDoom/src/vizdoom/src/posix/sdl/critsec.h:9: In file included from /Library/Frameworks/SDL.framework/Headers/SDL_thread.h:32: /Library/Frameworks/SDL.framework/Headers/SDL_stdinc.h:94:2: error: redefinition of enumerator 'SDL_FALSE' SDL_FALSE = 0, ^ /usr/local/include/SDL2/SDL_stdinc.h:141:5: note: previous definition is here SDL_FALSE = 0,

Then a list of similar errors follow. I tried adding SLD with brew install SDL but the error persists. SDL2 is installed.

[mwydmuch]

Hi @BSVogler, you should install SDL2 package (brew install SDL2), SDL is the first version and it is available as separate package in brew.

[BSVogler]

@nwydmuch You probably did not saw my edit. I have sdl2 installed.

[mwydmuch]

It seems that you have two versions of SDL2 in your system that conflict. One in /Library/Frameworks/SDL.framework/Headers/SDL_stdinc.h and other in /usr/local/include/SDL2/SDL_stdinc.h (from brew). You should remove one.

[BSVogler]

You were right. I uninstalled the brew one. make says that it found the one in /Library/Frameworks/SDL.framework However I am still getting the same error. :(

[mwydmuch]

• Are you still getting this message: ?

/Library/Frameworks/SDL.framework/Headers/SDL_stdinc.h:94:2: error: redefinition of enumerator 'SDL_FALSE'
SDL_FALSE = 0,
^
/usr/local/include/SDL2/SDL_stdinc.h:141:5: note: previous definition is here
SDL_FALSE = 0,

• Are you sure that you removed SLD2 from brew?

• Is this working for you: ?

sdl2-config
sdl2-config --version

• Did you rerun:

rm CMakeCache.txt
cmake -DCMAKE_BUILD_TYPE=Release ...
make

[BSVogler]

I can confirm every point but this one: There is not such command as sdl2-config on my system. After all it's just a framework in the frameworks folder.

[mwydmuch]

SDL2 should have sdl2-config app that provides information for building. But it is strange that you are still getting same error. Did you check if files were really removed from /usr/local/include/SDL2/? You can try to edit cmake_modules/FindSDL2.cmake and remove all searching paths and left only /Library/Frameworks/. Also I suggest to remove all SDL versions and install only one from brew.

[BSVogler]

I found a solution. The problem is that /Library/Frameworks/SDL.framework version 1 is being used even if cmake says it found the installed SDL2 version. Can this be caused because "sdl.h" is used in vizdoom? Is there something like "sdl2.h?"

[mwydmuch]

No, SDL2 doesn't use '2' in its headers, sdl.h is correct include for SDL2.

[mwydmuch]

Old issue, closing.