How to install GZDoom on Xubuntu 21.04 arm64 w/o emulators

[SlainByWoodborne]

Hello,

I have a [Raspberry Pi 400](https://www.raspberrypi.org/products/raspberry-pi-400/specifications/) with Xubuntu 21.04 arm64 onto which I am attempting to install GZDoom. To get to Xubuntu on this P400 (not a PII 400Mhz), I installed the Ubuntu 20.04 arm64 OS. I then installed Xfce 4, changed the configuration settings, and upgraded to 21.04 (still arm64).

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root@terminal:~# cat /etc/os-release
NAME="Ubuntu"
VERSION="21.04 (Hirsute Hippo)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 21.04"
VERSION_ID="21.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=hirsute
UBUNTU_CODENAME=hirsute
root@terminal:~#


Although the installation would likely be cleaner if I learned how to compiled a targeted version of Xubuntu arm64 with the armhf libraries, I want to determine how best to install GZDoom as well as its requisite packages and configurations prior to learning how to compile an image so that I can eventually include those requisite packages in the targeted version.

I initially began attempting to install GZDoom after watching a YouTube video that had piqued my interest: [Set up GZDoom on Raspberry pi (Rpi) install Doom on rpi without dosbox or retropi](https://www.youtube.com/watch?v=nquBHS-Nf1o). The Raspberry Pi 400 is fairly similar to the layout of the first keyboard on which I played the shareware copy of Doom on a Gateway 2000 with a Pentium-ready 89Mhz processor, 4MB RAM, and a 404 MB drive with Windows 3.1x.

The sequence to a functional GZDoom has been challenging since my background is not in linux despite using it daily for the past two years professionally. The following are the my steps, in order of execution, to attempt to install a functional GZDoom.

I started by using [https://zdoom.org/files/gzdoom/bin/gzdoom_3.4.1_armhf.deb] to download GZDoom using a web browser, not wget, which is one of the two links provided by the description of the video. The second is a link to the poster's [dropbox](https://www.dropbox.com/sh/3ne1927dp55vryl/AADNFpECkEftPcGPkgHhzkNza?dl=0) containing three files:

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Brutal Doom pack.pk3

;

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gzdoom_3.4.1_armhf.deb

;

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gzdoom.ini

. I downloaded the other two files, so that all three files were are in my

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/home/user/Downloads

path. I tried to perform the process in the video but soon realized the OS and configurations were too different.

I installed

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gdebi

using

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sudo apt install gdebi

and proceeded to attempt to install the GZDoom

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.deb

file.

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root@terminal:/home/user# sudo gdebi /home/user/Downloads/gzdoom_3.4.1_armhf.deb
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
This package is uninstallable
Wrong architecture 'armhf' -- Run dpkg --add-architecture to add it and update afterwards
root@terminal:/home/user#


I added the missing

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armhf

architecture using

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dpkg --add-architecture armhf

and updated using

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sudo apt update

, then tried again.

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root@terminal:/home/user# sudo gdebi /home/user/Downloads/gzdoom_3.4.1_armhf.deb
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Reading state information... Done
Requires the installation of the following packages: gcc-11-base:armhf libc6:armhf libcom-err2:armhf libcrypt1:armhf libgcc-s1:armhf libgomp1:armhf libgssapi-krb5-2:armhf libidn2-0:armhf libjpeg-turbo8:armhf libjpeg8:armhf libk5crypto3:armhf libkeyutils1:armhf libkrb5-3:armhf libkrb5support0:armhf libnsl2:armhf libnss-nis:armhf libnss-nisplus:armhf libssl1.1:armhf libstdc++6:armhf libtirpc3:armhf libunistring2:armhf zlib1g:armhf

OpenGL version of ZDoom.
Do you want to install the software package? [y/N]:
...
Selecting previously unselected package gzdoom:armhf.
(Reading database ... 233687 files and directories currently installed.)
Preparing to unpack .../gzdoom_3.4.1_armhf.deb ...
Unpacking gzdoom:armhf (3.4.1) ...
Setting up gzdoom:armhf (3.4.1) ...
Processing triggers for bamfdaemon (0.5.5+21.04.20210119-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mailcap (3.68ubuntu1) ...
Processing triggers for gnome-menus (3.36.0-1ubuntu1) ...
Processing triggers for desktop-file-utils (0.26-1ubuntu1) ...
root@terminal:/home/user#


It did install but it is not functional. I realized I had missed a step from the video, so I made a

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/home/user/.config/gzdoom

directory and used

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sudo chmod a+w /home/user/.config/gzdoom

to change its permissions. I copied the other two files to

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cp -a /home/user/Downloads/gzdoom.ini /home/user/.config/gzdoom/

and

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cp -a /home/user/Downloads/'Brutal Doom pack.pk3' /opt/gzdoom/

;

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/opt/gzdoom

is where

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gdebi

installed GZDoom from its

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.deb

file.

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root@terminal:/home/user# gzdoom /home/user/.config/gzdoom/gzdoom.ini
/opt/gzdoom/gzdoom: error while loading shared libraries: libSDL2-2.0.so.0: cannot open shared object file: No such file or directory
root@terminal:/home/user#


According to https://github.com/redeclipse/base/issues/634:

Have you installed the sdl library? You need these packages: libsdl2-mixer-2.0-0 libsdl2-image-2.0-0 libsdl2-2.0-0

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sudo apt install libsdl2-mixer-2.0-0 libsdl2-image-2.0-0 libsdl2-2.0-0

Same error encountered when invoking "gzdoom" from the shell; tried explicit libraries for the "armhf" architecture, which installed.

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sudo apt install libsdl2-mixer-2.0-0:armhf libsdl2-image-2.0-0:armhf libsdl2-2.0-0:armhf

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root@terminal:/home/user# gzdoom
/opt/gzdoom/gzdoom: error while loading shared libraries: libbz2.so.1.0: cannot open shared object file: No such file or directory
root@terminal:/home/user#


A different error message!

According to https://michaelheap.com/error-while-loading-shared-libraries-libbz2-so-1-0-cannot-open-shared-object-file-on-centos-7/:

Whilst trying to build using electron-builder on CentOS 7, I ran into the following error message:

error while loading shared libraries: libbz2.so.1.0: cannot open shared object file

To fix it, you'll need to install bzip2-devel, and potentially create a symlink too as libbz2.so.1 exists, but libbz2.so.1.0 doesn't

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sudo yum install bzip2-devel
sudo ln -s `find /usr/lib64/ -type f -name "libbz2.so.1*"` /usr/lib64/libbz2.so.1.0


Slightly modified:

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sudo apt install bzip2-devel:arm64 bzip2-devel:armhf
sudo ln -s `find /usr/lib64/ -type f -name "libbz2.so.1*"` /usr/lib64/libbz2.so.1.0


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root@terminal:/home/user# sudo apt install bzip2-devel:arm64 bzip2-devel:armhf
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package bzip2-devel:arm64
E: Unable to locate package bzip2-devel:armhf
root@terminal:/home/user# sudo apt install bzip2-devel
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package bzip2-devel
root@terminal:/home/user#


:-/

According to https://github.com/samtools/samtools/issues/701:

The conda recipe for bzip2 lacks the shared library, install libbz2-dev (or something like that) with your system's package manager.

So, I tried

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sudo apt install libbz2-dev

, which did install the

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arm64

architecture libraries and

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sudo apt install libbz2-dev:armhf

installed the

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armhf

architecture libraries; now to symlink.

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root@terminal:~# sudo ln -s `find /usr/lib64/ -type f -name "libbz2.so.1*"` /usr/lib64/libbz2.so.1.0
find: ‘/usr/lib64/’: No such file or directory
root@terminal:~# sudo ln -s `find /usr/lib/ -type f -name "libbz2.so.1*"` /usr/lib/libbz2.so.1.0
ln: target '/usr/lib/libbz2.so.1.0': No such file or directory
root@terminal:~# sudo ln -s `find /usr/lib/arm-linux-gnueabihf/ -type f -name "libbz2.so.1*"` /usr/lib/arm-linux-gnueabihf/libbz2.so.1.0
ln: failed to create symbolic link '/usr/lib/arm-linux-gnueabihf/libbz2.so.1.0': File exists
root@terminal:~# sudo ln -s `find /usr/lib/arm-linux-gnueabihf/ -type f -name "libbz2.so.1*"` /usr/lib/libbz2.so.1.0
root@terminal:~#


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root@terminal:~# gzdoom
/opt/gzdoom/gzdoom: error while loading shared libraries: libgme.so.0: cannot open shared object file: No such file or directory
root@terminal:~#


At least its another new error.

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sudo apt install libgme-dev

then

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sudo apt install libgme-dev:armhf

.


Woohoo! "gzdoom" attempted to open but failed due to no "level" (missing wad, I assume):

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root@terminal:~# gzdoom
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 86260, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 86260: generic error
gdb-respfile-ChrGn5:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~#


On the search for this error, I rediscovered a command,

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apt search

, about which I had forgotten.

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apt search libpthread

to find the name of the library and

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sudo apt install libpthread-stubs0-dev

to install the

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arm64

architecture version and

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sudo apt install libpthread-stubs0-dev:armhf

to install the

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armhf

architecture version.

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root@terminal:~# gzdoom
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 87388, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 87388: generic error
gdb-respfile-uMEFwY:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~#


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root@terminal:~# sudo ln -s `find /usr/lib/arm-linux-gnueabihf/ -type f -name "libpthread.so.*"` /usr/lib/libpthread.so.0
root@terminal:~#


Same error, again, aside from timestamp; I thought I might be encountering these errors due to having no IWAD, so I obtained several from Steam and compared their hashes to links from [IWAD](https://zdoom.org/wiki/IWAD).

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root@terminal:~# for p in /home/user/.config/gzdoom/Hexen/HEXEN.WAD /home/user/.config/gzdoom/Hexen_Deathkings_of_the_Dark_Citadel/HEXEN.WAD; do for h in md5sum sha1sum; do $h $p; done; done;
abb033caf81e26f12a2103e1fa25453f  /home/user/.config/gzdoom/Hexen/HEXEN.WAD
4b53832f0733c1e29e5f1de2428e5475e891af29  /home/user/.config/gzdoom/Hexen/HEXEN.WAD
abb033caf81e26f12a2103e1fa25453f  /home/user/.config/gzdoom/Hexen_Deathkings_of_the_Dark_Citadel/HEXEN.WAD
4b53832f0733c1e29e5f1de2428e5475e891af29  /home/user/.config/gzdoom/Hexen_Deathkings_of_the_Dark_Citadel/HEXEN.WAD
root@terminal:~# for p in /home/user/.config/gzdoom/Doom_2/rerelease/doom2.wad /home/user/.config/gzdoom/Doom_2/DOOM2.WAD; do for h in md5sum sha1sum; do $h $p; done; done;
8ab6d0527a29efdc1ef200e5687b5cae  /home/user/.config/gzdoom/Doom_2/rerelease/doom2.wad
9574851209c9dfbede56db0dee0660ecd51e6150  /home/user/.config/gzdoom/Doom_2/rerelease/doom2.wad
25e1459ca71d321525f84628f45ca8cd  /home/user/.config/gzdoom/Doom_2/DOOM2.WAD
7ec7652fcfce8ddc6e801839291f0e28ef1d5ae7  /home/user/.config/gzdoom/Doom_2/DOOM2.WAD
root@terminal:~#


I then edited

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/home/user/.config/gzdoom/gzdoom.ini

to include those paths for the following sections for both the

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/home/user/.config/gzdoom/

and

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/opt/gzdoom/

paths.

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[IWADSearch.Directories]
Path=$HOME/.config/gzdoom
Path=/home/user/.config/gzdoom/Final_Doom
Path=/home/user/.config/gzdoom/Doom_2
Path=/home/user/.config/gzdoom/Doom_2/rerelease
Path=/home/user/.config/gzdoom/Heretic_Shadow_of_the_Serpent_Riders
Path=/home/user/.config/gzdoom/Hexen
Path=/home/user/.config/gzdoom/Hexen_Deathkings_of_the_Dark_Citadel
Path=/opt/gzdoom
Path=/opt/gzdoom/Final_Doom
Path=/opt/gzdoom/Doom_2
Path=/opt/gzdoom/Doom_2/rerelease
Path=/opt/gzdoom/Heretic_Shadow_of_the_Serpent_Riders
Path=/opt/gzdoom/Hexen
Path=/opt/gzdoom/Hexen_Deathkings_of_the_Dark_Citadel

[FileSearch.Directories]
Path=$HOME/.config/gzdoom
Path=/opt/gzdoom/

[SoundfontSearch.Directories]
Path=$HOME/.config/gzdoom/soundfonts
Path=/opt/gzdoom/soundfonts


A similar error to the previous errors when attempting to execute "gzdoom":

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root@terminal:~# gzdoom
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 91513, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 91513: generic error
gdb-respfile-GD5au1:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~#


It still appeared that it cannot find the IWAD files despite changes to the

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gzdoom.ini

file, so I copied the IWADs and ini file to the base paths of

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/home/user/.config/gzdoom/

and

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/opt/gzdoom/

.

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root@terminal:~# for w in $(find /opt/gzdoom/ | grep -i "wad"); do cp $w /opt/gzdoom/; done;
root@terminal:~# ls /opt/gzdoom
brightmaps.pk3        DOOM2.WAD   gzdoom.ini                            HEXDD.WAD                             lights.pk3    zd_extra.pk3
Brutal_Doom_pack.pk3  extras.wad  gzdoom.pk3                            Hexen                                 PLUTONIA.WAD
Doom_2                Final_Doom  Heretic_Shadow_of_the_Serpent_Riders  Hexen_Deathkings_of_the_Dark_Citadel  soundfonts
doom2.wad             gzdoom      HERETIC.WAD                           HEXEN.WAD                             TNT.WAD
root@terminal:~# path=/home/user/.config/gzdoom/; for w in $(find ${path} | grep -i "wad"); do cp $w ${path}; done;
root@terminal:~# ls /home/user/.config/gzdoom/
Doom_2     DOOM2.WAD   Final_Doom  Heretic_Shadow_of_the_Serpent_Riders  HEXDD.WAD  Hexen_Deathkings_of_the_Dark_Citadel  PLUTONIA.WAD
doom2.wad  extras.wad  gzdoom.ini  HERETIC.WAD                           Hexen      HEXEN.WAD                             TNT.WAD
root@terminal:~#


The same error is encountered even when IWADs are in the same directory as the executable. I tried again just before this post to get a "fresh"

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gzdoom-crash.log

just to ensure that it hadn't somehow fixed itself due to an update. The crash logs all have "No" for one library but I don't know if that is the issue or if it is something else since I did create a symlink for that library.

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* Loaded Libraries
From        To          Syms Read   Shared Object Library
0xf773b0e0  0xf77e4028  Yes (*)     /lib/arm-linux-gnueabihf/libSDL2-2.0.so.0
0xf77031e0  0xf770f252  No          /lib/arm-linux-gnueabihf/libpthread.so.0
0xf76e9c90  0xf76ec850  Yes (*)     /lib/arm-linux-gnueabihf/librt.so.1


The errors in the CLI also reference

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/lib/arm-linux-gnueabihf/libpthread.so.0

but I don't know how to fix it.

I have also tried it at the non root user level with nearly the same error message.

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user@terminal:~$ gzdoom
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.
Please select a game wad (or 0 to exit):
1. DOOM 2: Hell on Earth (DOOM2)
2. Final Doom: Plutonia Experiment (PLUTONIA)
3. Final Doom: TNT - Evilution (TNT)
4. Heretic: Shadow of the Serpent Riders (HERETIC)
5. Hexen: Beyond Heretic (HEXEN)
6. Hexen: Deathkings of the Dark Citadel (HEXDD)
Which one? 1
W_Init: Init WADfiles.
 adding /opt/gzdoom/gzdoom.pk3, 625 lumps
 adding /opt/gzdoom/zd_extra.pk3, 132 lumps
 adding /home/user/.config/gzdoom/DOOM2.WAD, 2919 lumps
I_Init: Setting up machine state.
Sound init failed. Using nosound.
V_Init: allocate screen.
S_Init: Setting up sound.
ST_Init: Init startup screen.
Checking cmd-line parameters...
S_InitData: Load sound definitions.
G_ParseMapInfo: Load map definitions.
Texman.Init: Init texture manager.
ParseTeamInfo: Load team definitions.
LoadActors: Load actor definitions.
script parsing took 332.76 ms
R_Init: Init Doom refresh subsystem.
DecalLibrary: Load decals.
M_Init: Init menus.
P_Init: Init Playloop state.
ParseSBarInfo: Loading custom status bar definition.
D_CheckNetGame: Checking network game status.
player 1 of 1 (1 nodes)
Using video driver x11


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 137035, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 137037: generic error
gdb-respfile-NjSsV8:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
user@terminal:~$


[Rachael]

arm-hardfloat (armhf) is currently on a "if it works it works" support status. We currently are targeting arm64 but mostly due to Apple M1 support more than it is for Raspberry Pi support.

The Raspberry Pi does not come with very good video drivers. The first thing to try is to see if the OpenGL ES backend will work (add +vid_preferbackend 3 to the command line when starting GZDoom - this only needs to be done once). Note that some fancy effects will be missing.

The Pi can do Vulkan as well as long as you have a bleeding edge Mesa driver. You can try +vid_preferbackend 1 to see if that works. Vulkan is a lot slower than GL-ES on the Pi, but it is confirmed working. When the game is started you can try vid_scalemode 1 to see if it speeds up Vulkan rendering - in my experience Vulkan is nearly playable that way, however that is in vanilla. I'm almost certain that Brutal Doom will not run well at all. Sorry but that's just the way it is - Brutal Doom has a lot of inefficient code that slows things down quite a lot, and this effect will only be multiplied by an order of magnitude on the slower ARM CPU's.

[SlainByWoodborne]

There are variants in the crash logs for the additional options but the general error remains the same.

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root@terminal:~# gzdoom +vid_preferbackend 3
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 139617, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 139617: generic error
gdb-respfile-KyK2Pl:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~# cp -a gzdoom-crash.log /home/gzdoom-crash_plus-vid_preferbackend-3.log
root@terminal:~#


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root@terminal:~# gzdoom +vid_preferbackend 1
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 139650, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 139650: generic error
gdb-respfile-fy5BeR:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~# cp -a gzdoom-crash.log /home/gzdoom-crash_plus-vid_preferbackend-1.log
root@terminal:~#


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root@terminal:~# gzdoom +vid_preferbackend 3 +vid_scalemode 1
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 139702, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 139702: generic error
gdb-respfile-86ON5X:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~# cp -a gzdoom-crash.log /home/gzdoom-crash_plus-vid_preferbackend-3_plus-vid_scalemode-1.log
root@terminal:~#


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root@terminal:~# gzdoom +vid_preferbackend 1 +vid_scalemode 1
GZDoom g3.4.1 - 2018-06-13 23:44:12 +0200 - SDL version
Compiled on Jun 13 2018

M_LoadDefaults: Load system defaults.


*** Fatal Error ***
Address not mapped to object (signal 11)
Address: 0x14

Generating gzdoom-crash.log and killing process 139741, please wait... Error while reading shared library symbols for /lib/arm-linux-gnueabihf/libpthread.so.0:
Cannot find user-level thread for LWP 139741: generic error
gdb-respfile-Itoy4j:10: Error in sourced command file:
Unable to fetch vFP/SIMD registers.: Invalid argument.
Killed
root@terminal:~# cp -a gzdoom-crash.log /home/gzdoom-crash_plus-vid_preferbackend-1_plus-vid_scalemode-1.log
root@terminal:~#


[Rachael]

Oh you're using a super old version of GZDoom. I am sorry but I am too used to the newer ones. Maybe someone else can help you.