Unsupported ffmpeg version

[berarma]

Hi.

When building on Debian 12 I get this output and error:

Updating build configuration files for UltraStar WorldParty, please wait...
configure.ac:42: warning: The macro `AC_LN_S' is obsolete.
configure.ac:42: You should run autoupdate.
./lib/autoconf/oldnames.m4:62: AC_LN_S is expanded from...
configure.ac:42: the top level
checking whether make sets $(MAKE)... yes
checking whether ln -s works... yes
checking for a race-free mkdir -p... /usr/bin/mkdir -p
checking for a BSD-compatible install... /usr/bin/install -c
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for fpc... fpc
checking for fpcmake... fpcmake
checking version of fpc... [3.2.2]
checking whether the Free Pascal Compiler works... yes
checking whether the Free Pascal Compiler can link... yes
checking whether FPC supports -k"-z noexecstack"... yes
checking whether FPC supports -k"--copy-dt-needed-entries"... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking for ranlib... ranlib
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for sdl2... yes
checking for SDL2_image... yes
checking for freetype2... yes
checking for sqlite3... yes
checking for lua5.3... yes
checking version of lua... [5.3.6]
checking size of lua_Integer... 64 bits
checking for libavcodec... yes
checking version of libavcodec... [59.37.100]
checking for avcodec_decode_audio in -lavcodec... no
checking for avcodec_decode_audio2 in -lavcodec... no
checking for img_convert in -lavcodec... no
checking for libavformat... yes
checking version of libavformat... [59.27.100]
checking for libavutil... yes
checking version of libavutil... [57.28.100]
checking for libswscale... yes
checking version of libswscale... [6.7.100]
checking for libswresample... yes
checking version of libswresample... [4.7.100]
checking version of ffmpeg... configure: error: 

Unsupported ffmpeg version, most recent version supported is 3.3.

I have ffmpeg 5.1.4 installed. What can I try?

Thanks!