Symbol lookup error

SDL Development
1

Hello everyone,

i havent touched a little game source for a while. Now if i try to compiles and run with code:blocks
i get the error in the title: Symbol lookup error: /lib/x86_64-linux-gnu/

LibSDL2_Image-2.0.so.0: undefined symbol: SDL_RWseek.

It seems that some macro like SDL_RWseek have been converted into functions.

How can i solve this problem?
I’m using ubuntu 20.10
This are the library version i have:
ii libsdl2-2.0-0:amd64 2.0.12+dfsg1-4 amd64
ii libsdl2-dev:amd64 2.0.12+dfsg1-4 amd64
ii libsdl2-image-2.0-0:amd64 2.0.5+dfsg1-2 amd64
ii libsdl2-image-dev:amd64 2.0.5+dfsg1-2 amd64
ii libsdl2-mixer-2.0-0:amd64 2.0.4+dfsg1-2build1 amd64
ii libsdl2-ttf-2.0-0:amd64 2.0.15+dfsg1-1 amd64
ii libsdl2-ttf-dev:amd64 2.0.15+dfsg1-1 amd64

Kind regards

2

Anyone on this?

The code worked last time, but now, after many months, doesn’t work anymore.
Could someone give me an hint to solve?

Kind regards

3

As you said, the SDL_RW* macros have been turned into functions.
Those functions should be in recent versions of libSDL2-2.0.so.0 - is it possible that your game doesn’t actually use the libSDL2-2.0.so.0 from libsdl2-2.0-0:amd64 2.0.12+dfsg1-4 amd64 but and older version that’s still somewhere else on the system?
ldd YourGame should tell you which libs (incl. paths) it will use at runtime

4

I installed again SDL2 and SDL2 image. Same result.
Do you think i should delete all related to SDL2 and SDL2_image with purge?

Thank you very much.
Kind regards

5

No, I think you should use ldd YourGame to find out which libSDL2-2.0.so.0 is used.
Maybe you still have one in /usr/local/lib/ or some other directory from a “manual” installation (maybe from compiling an old version of SDL yourself).

Only if you can rule that out it makes sense to investigate whether the distribution packages are somehow broken.