Re: Building 3.9.1 and finding SDL2 built with autotools

[Ron Economos]

It's not looking for sdl2, it's looking for sdl1.2.

If you're using a version of CMake greater than 3.17, you can turn on 
find_package debugging by adding the following to the cmake invocation:

-DCMAKE_FIND_DEBUG_MODE=1

This will give copious output about exactly what and where packages are 
being searched.

Ron

On 6/8/21 4:06 PM, Barry Jackson wrote:
> gnuradio & cmake seem not to be able to detect the presence of sdl2 
> development files.
>
>  -- Configuring gr-video-sdl support...
> --   Dependency SDL_FOUND = FALSE
> --   Dependency Boost_FOUND = TRUE
> --   Dependency ENABLE_GNURADIO_RUNTIME = ON
> --   Disabling gr-video-sdl support.
> --   Override with -DENABLE_GR_VIDEO_SDL=ON/OFF
>
> I can see nothing in the CMakeList.txt to enable it to find sdl2.pc 
> and use it, however my cmake knowledge is small.
>
> Obviously there are no cmake files packaged with sdl2 as the package 
> is not build using cmake.
>
> In earlier versions we had no issues building with sdl support so has 
> something changed?
>
> Any help would be appreciated.
>
> Barry
> (GR maintainer for Mageia)