Retropie Setup does not work in Ubuntu 26.04

[Scoob1978]

Description

I ran the retropie setup after upgrading from 24.10. It was a clean install. The set up script stops here. Hopefully there is an easy fix.

record/drivers/record_ffmpeg.c:375:25: error: ‘AV_INPUT_BUFFER_MIN_SIZE’ undeclared (first use in this function); did you mean ‘AV_INPUT_BUFFER_PADDING_SIZE’?
375 | audio->outbuf_size = AV_INPUT_BUFFER_MIN_SIZE;
| ^~~~~~~~~~~~~~~~~~~~~~~~
| AV_INPUT_BUFFER_PADDING_SIZE
record/drivers/record_ffmpeg.c:375:25: note: each undeclared identifier is reported only once for each function it appears in
CC gfx/video_crt_switch.c
record/drivers/record_ffmpeg.c: In function ‘ffmpeg_free’:
record/drivers/record_ffmpeg.c:952:7: error: implicit declaration of function ‘avcodec_close’; did you mean ‘avio_close’? [-Wimplicit-function-declaration]
952 | avcodec_close(handle->audio.codec);
| ^~~~~~~~~~~~~
| avio_close
make: *** [Makefile:209: obj-unix/release/record/drivers/record_ffmpeg.o] Error 1
make: *** Waiting for unfinished jobs....
cores/libretro-ffmpeg/ffmpeg_core.c: In function ‘libretro_ffmpeg_retro_unload_game’:
cores/libretro-ffmpeg/ffmpeg_core.c:2092:10: error: implicit declaration of function ‘avcodec_close’; did you mean ‘avcodec_license’? [-Wimplicit-function-declaration]
2092 | avcodec_close(sctx[i]);
| ^~~~~~~~~~~~~
| avcodec_license
make: *** [Makefile:207: obj-unix/release/cores/libretro-ffmpeg/ffmpeg_core.o] Error 1
Could not successfully build retroarch - RetroArch - frontend to the libretro emulator cores - required by all lr-* emulators (/home/bo/RetroPie-Setup/tmp/build/retroarch/retroarch not found).
/home/bo/RetroPie-Setup
Errors:
Could not successfully build retroarch - RetroArch - frontend to the libretro emulator cores - required by all lr-* emulators (/home/bo/RetroPie-Setup/tmp/build/retroarch/retroarch not found).

[cmitu]

@Scoob1978 it's been already reported, should be fixed when RetroPie/RetroArch#11 is merged, closing also #4190.

[cmitu]

@Scoob1978 ok, can you try now ? The RetroArch fix has been merged. You need to clean the sources then re-install (from source) RetroArch.

[Scoob1978]

Retroarch compiled but emulation station does not

= = = = = = = = = = = = = = = = = = = = =
Building 'emulationstation' : EmulationStation - Frontend used by RetroPie for launching emulators
= = = = = = = = = = = = = = = = = = = = =

Removing additional swap
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
Compatibility with CMake < 3.5 has been removed from CMake.

Update the VERSION argument value. Or, use the ... syntax
to tell CMake that the project requires at least but has been updated
to work with policies introduced by or earlier.

Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.

-- Configuring incomplete, errors occurred!
make: *** No rule to make target 'clean'. Stop.
make: *** No targets specified and no makefile found. Stop.
Removing additional swap
Could not successfully build emulationstation - EmulationStation - Frontend used by RetroPie for launching emulators (/home/bo/RetroPie-Setup/tmp/build/emulationstation/emulationstation not found).
/home/bo/RetroPie-Setup

[cmitu]

emulationstation-dev should work (from the experimental packages section).

[Scoob1978]

That worked. Thank you so much.

[cmitu]

@Scoob1978 ok, thanks for the report. We'll backport the CMake related commits to the stable branch of EmulationStation, just to start support for 26.94, but I expect you'll see similar issues with upstream projects.
I'll leave this open until EmulationStation is updated.