lr-mame requires gcc 5

Tasio

lr-mame requires gcc 5 to compile, you can see that here
https://github.com/RetroPie/RetroPie-Setup/blob/master/scriptmodules/libretrocores/lr-mame.sh
My up to date retropie has gcc 4.4.38-v7

On the other hand, lr-mame2016 compiles and works fine with some games.

dankcushions

raspbian jessie doesn't have gcc 5, so i guess the options are:

install gcc 5 manually (this seemed hard when i looked into it a while ago)
wait for raspbian stretch (maybe 1st half of this year? i don't think they've announced a release date)
get someone with gcc5 and a pi3 to build a binary.

i hear that current versions of gcc have more ARM optimisations so i want to try it out, but it seems like a hassle to get it installed...

joyrider3774

can't we crosscompile on the pc ?

i did not try setting up a crosscompiler for my pi yet, though i never did that before. With other systems i used to get a binary build of a toolchain for windows when doing this in the past for the gp2x, wiz, cannoo.

Will have to look into this once because compiling on the pi tiselve takes way too long

dankcushions

@joyrider3774 absolutely, but yeah can be a bit of a challenge. if anyone can figure it out and give some instructions that would be ace! i guess @BuZz has set one up to create the binaries.

BuZz

It would be possible to cross compile or build a newer gcc on the rpi, but it's not worth the effort imho -what is in lr-mame that isn't in lr-mame2016 that you need ?

Tasio

@BuZz I just wanted to test if some games works best there but the main reason of this post is to report the non working installer

BuZz

@Tasio How do you mean non-working ? The installing intentionally fails if an older gcc is found.

lr-mame2016 is quite new enough to use vs a mame no more than 6 months newer or so.

Tasio

@BuZz sorry what I mean is that retropie doesn't meet the requirements to instal lr-mame, may be it should be removed from the installation menu or find a workaround to install lr-mame.

BuZz

@Tasio it works on retropie on other operating systems other than Raspbian. I dont have a quick fix to hide it based on version of gcc installed so it just does the check on install.

RetroPie is not just an pre-made image for the Raspberry Pi.

Tasio

@BuZz that make sense, I forgot that RetroPie is not exclusive for Raspbian.