Illegal instruction

Libretro Lakka
#1

Hello everyone,

i have tried to run lakka.tv on an Athlon XP 2600+ and i get an illegal instruction error after i choose live run (but even if i choose install to disk).

The cpu isn’t sse2 capable, but i think it should be fast enought to run something nice (it would be placed in a wannabe console & computer museum). Is there a way to solve the problem?

Thank you in advance.

#2

Hello, yes we use SSE in our PC builds

#3

Ok thank you.

If you compile it with sse i’ll let you know if it will be fast enought!

#4

Hello, we provided some compilation guide if you want to try by yourself (you need a linux for that). I lack time to try this because I’m busy with some other bugs for now.

#5

I can try, i’ve found compilation guide here: http://www.lakka.tv/doc/Compiling-Lakka/

And yes i use Linux. Unfortunatly i don’t understand how to disable sse2…

how can i modify the following line in order to do so (the gcc option is -mno-sse2)?

DISTRO=Lakka PROJECT=Generic ARCH=i386 make image

Thank you again.

#6

Should i edit Lakka/config/arch.i386 using athlon-xp as TARGET_CPU this way?

Do you think that a -O3 in FLAGS can improve performances or it will create problems?

Thank you again.

# determines TARGET_CPU, if not forced by user
  if [ -z "$TARGET_CPU" ]; then
    TARGET_CPU=athlon-xp
  fi

# determine architecture's family
  TARGET_SUBARCH=i686

# setup ARCH specific *FLAGS
  TARGET_CFLAGS="-march=$TARGET_CPU -m32"
  TARGET_LDFLAGS="-march=$TARGET_CPU -m32"

# build with SIMD support ( yes / no )
  SIMD_SUPPORT="yes"
#7

Compiled (took a LOT of time), but i get an error message:

sh: bad number

On my netbook (atom) it works…

#8

I’ve got an AMD sempron 2400+. Is someone manage to get Lakka TV on old AMD cpu ? I’m stuck in the loading screen when i boot from the Flashdrive