So... the "Vulkan" attempt didn't really work out (see other posting). Now going OpenGL.
First attempt... Well, better start with a clean "build" folder :D
Second attempt... Well, readme tells me to generate and download "glad" header files. Oh well...
So... It's more or less what the pre-build version gave me. to get portaudio I had to downgrade jackd but to run jackd I had to upgrade it again, and when I start it the game crashes with some ALSA errors. And without jackd running even before that...
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side Cannot lock down 82280346 byte memory area (Cannot allocate memory) Cannot lock down 82280346 byte memory area (Cannot allocate memory) ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave Cannot lock down 82280346 byte memory area (Cannot allocate memory) Segmentation fault (core dumped)