Basic install failed - could not successfully build muplen64plus

RonReese

Hello I am on a Dell Laptop running Lubuntu 18.04 and new to Linux in general - have tried the install twice and get the above message (GlideN64/projects/cmake/plugin/Release/muplen64plus-video-Glide-GlideN64 - so. not found)
Any ideas?
Thanks

mitu

@ronreese Are you running the latest RetroPie release ? Find the compilation log under /home/pi/RetroPie-Setup/logs/ (should a .gz file with the date of the install) and upload it to pastebin.com to take a look at the actual error.

RonReese

@mitu It says no such file or directory? I can now see Retropie under the 'Games' tab and it's let me scrape a number of roms, it just doesn't play any of them

mitu

@ronreese The folder I mentioned should be there, this is where all the operations performed in the RetroPie-Setup script are logged.
Given you're on Lubuntu, it's probably $HOME/RetroPie-Setup/logs.

RonReese

@mitu Me again, just tried to install it again and still no luck with mupen, it directs me to a logfile then tells me Permission Denied

DougA

I also installed on Ubuntu 18.04 a couple of weeks ago, and got error messages and "failed to install" on the mupen 64 emulator, but I didn't do anything about it because I didn't want to play N64 games.

RonReese

@douga That's fair enough however none of the other emulators are working for me either, I can hear the music but the screen is a dark gray rectangle

mitu

@ronreese Switch the RetroArch output video driver to sdl2 and try again, this is a common problem with 18.04.
For your initial problem, please provide the log file from the compilation, as I asked before, simply saying doesn't work or Permission denied does not ring any bells and it's useless trying to diagnose the problem you're having.

BuZz

@ronreese make sure your retroarch version is v1.7.3 - should work without switching video driver. if not, update retropie-setup and retroarch.

BuZz

mupen64 currently fails on 32bit installs - should work on 64bit Ubuntu.

RonReese

@mitu how do I switch the RetroArch output video driver please? And as I stated when I've tried the command to get the log file I get 'Permission Denied' when I type it in so I haven't been able to get one

RonReese

@buzz I went onto retropie and chose the linux 32 bit instructions so would that be v.1.7.3?

mitu

@ronreese Modify the /opt/retropie/configs/all/retroarch.cfg and find the line with

# video driver = gl

Modify it so it becomes

video_driver = sdl2

then try again to start a Libretro emulator - try a NES/SNES/Arcade game that was not working.

As for the log file, as @buzz said, if you're running a 32 bit Lubuntu installation, installation won't work. TO copy the log file, go to a command prompt and change it's permissions with sudo

sudo chown $USER <file>

where $USER is your username and <file> is the full path to the file.

RonReese

@mitu Sorry me again, as I stated I'm new to linux and do appreciate your help, does 'Modify' mean open a terminal and type in that line of script? Or should I be doing something else? I've just opened a terminal and typed the /opt/etc. in and it stated Permission Denied again so maybe that;s not what you meant?

mitu

@ronreese No, modifying means using a text editor to modify the file's contents. When you type directly a path in the command line, the shell is trying to execute it as a command, but directories are not executable, hence the error.
If you have a graphical desktop, then use something like leafpad or geany to edit the file (they might be already installed, if not you can install them from the software center). If you're on a command line use nano as an editor and type name /path/to/file to open it up and modify it.

RonReese

@mitu erm again, i've got leafpad but after that i'm completely lost, I am a complete noob to linux, how do i use it to edit a file in retropie? it looks like notepad on windows

mitu

@ronreese Sorry, it seems you're also a beginner with using a computer ?
You might want to start with a linux user guide to familiarize yourself with the concepts of the operating system and its applications.

RonReese

@mitu No I've been using a computer for a long time but on windows so I've never had to do anything like this before

RonReese

@ronreese anyway I finally managed to figure it out, changed the video setting in the config file and it didn't fix it, it's still the same. I'll try to get the log file this evening now I understand a bit more about what I'm doing.

mitu

OK, that's progress. Can you upload the retroarch.cfg file you modified on pastebin.com and provide the link, so we can check its contents ? Do the same for the log file for the compilation of the Mupen64plus emulator.