RetroPie forum home
    • Recent
    • Tags
    • Popular
    • Home
    • Docs
    • Register
    • Login

    Retropie 4.x on Odroid C2

    Scheduled Pinned Locked Moved Ideas and Development
    odroidbuild
    92 Posts 15 Posters 49.2k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • roleoR
      roleo
      last edited by

      Hi.
      I'm trying to compile retropie using the system.sh proposed in the 1st post.
      I started with emulationstation and I successfully compiled it.
      Below my system:

      • Odroid C2 rev 0.2
      • Ubuntu standard image: ubuntu64-16.04lts-mate-odroid-c2-20161017

      I followed the recommended procedure for ODROID C1 except for the last command:

      sudo apt-get install -y git
      git clone --depth=1 https://github.com/RetroPie/RetroPie-Setup.git
      cd RetroPie-Setup
      sudo __platform=odroid-c2 ./retropie_setup.sh
      

      I changed also the CMakeLists.txt with the correct libMali.so path.

      #check if we're running on olinuxino
      MESSAGE("Looking for libMali.so")
      if(EXISTS "/usr/lib/aarch64-linux-gnu/libMali.so")
          MESSAGE("libMali.so found")
          set(GLSystem "OpenGL ES")
      else()
          MESSAGE("libMali.so not found")
      endif()
      

      I stopped lightdm and when I run emulationstation I can see the correct graphic screen.

      1 Reply Last reply Reply Quote 0
      • roleoR
        roleo
        last edited by roleo

        Hi.
        Second step.
        I successfully compile retroarch and lr-mame2003.
        For retroarch I used the following build_retroarch() in retroarch.sh:

        function build_retroarch() {
            local params=(--enable-sdl2)
            ! isPlatform "x11" && params+=(--disable-x11 --enable-opengles --disable-ffmpeg --disable-sdl --enable-sdl2 --disable-oss --disable-pulse --disable-al --disable-jack)
            isPlatform "rpi" && params+=(--enable-dispmanx)
            isPlatform "mali" && params+=(--enable-mali_fbdev)
            isPlatform "arm" && params+=(--enable-floathard)
        #    isPlatform "neon" && params+=(--enable-neon)
            isPlatform "armv8" && params+=(--disable-wayland --disable-vg --disable-miniupnpc)
            ./configure --prefix="$md_inst" "${params[@]}"
            sed -i 's/HAVE_OSS_LIB = 1/HAVE_OSS_LIB = 0/g' config.mk
            sed -i 's/HAVE_VIDEOCORE = 1/HAVE_VIDEOCORE = 0/g' config.mk
            sed -i 's/OPENGLES_LIBS = -lGLESv2 -lEGL -lGLESv2 -lbcm_host -lvcos -lvchiq_arm/OPENGLES_LIBS = -lGLESv2 -lEGL/g' config.mk
            make clean
            make
            md_ret_require="$md_build/retroarch"
        }
        

        And I patched
        libretro-common/include/glsym/glsym_es2.h
        adding:

        #include <stdint.h>
        

        in the first line.

        For lr-mame2003 the compilation has no problems.

        I tried a few games and it works!

        roleo

        BuZzB 1 Reply Last reply Reply Quote 0
        • BuZzB
          BuZz administrators @roleo
          last edited by

          @roleo you shouldn't need to modify config.mk afterwards - the raspberry pi link libs/video core stuff should only be added if the raspberry pi dev libs are present on the system - which shouldn't be the case.

          are you building to run on X or framebuffer ?

          To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

          roleoR 1 Reply Last reply Reply Quote 0
          • roleoR
            roleo @BuZz
            last edited by roleo

            @BuZz
            I know but if I don't modify the config.mk the compilation process doesn't complete.
            And I didn't find an option to disable videocore from configure.
            Similar for OSS: the compilation is ok but the linker search for -lossaudio.
            Maybe I missed a parameter?

            I'm building on framebuffer, X is stopped.

            1 Reply Last reply Reply Quote 0
            • BuZzB
              BuZz administrators
              last edited by

              I will look into getting an ODroid-c2 board.

              To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

              roleoR 1 Reply Last reply Reply Quote 0
              • roleoR
                roleo @BuZz
                last edited by

                @BuZz
                Is there a donation link?
                I think there are a lot of users interested.

                BuZzB 1 Reply Last reply Reply Quote 0
                • BuZzB
                  BuZz administrators @roleo
                  last edited by

                  @roleo https://retropie.org.uk/donate/

                  I have sent an email to Hardkernel to see if they would be interested in providing any development boards (as it would benefit them too). If not I will buy an ODroid-C2 to start with.

                  To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                  1 Reply Last reply Reply Quote 0
                  • roleoR
                    roleo
                    last edited by roleo

                    Update.
                    I compiled also lr-fbalpha adding the following section to makefile.libretro:

                    else ifeq ($(platform), armv8)
                        TARGET := $(TARGET_NAME)_libretro.so
                        fpic := -fPIC
                        SHARED := -shared -Wl,-no-undefined -Wl,--version-script=$(LIBRETRO_DIR)
                        PLATFORM_DEFINES += -march=armv8-a+crc -mcpu=cortex-a53 -ffast-math
                        HAVE_NEON = 1
                        ENDIANNESS_DEFINES := -DLSB_FIRST
                        CFLAGS += -DARM
                    

                    However I can not compile lr-imame4all.

                    1 Reply Last reply Reply Quote 0
                    • roleoR
                      roleo
                      last edited by

                      Update.
                      lr-fceumm ok without problems.
                      lr-nestopia ok without problems.
                      lr-snes9x2010 ok adding the following section to Makefile.libretro:

                      # ARMv8
                      else ifneq (,$(findstring armv8,$(platform)))
                      	EXT    ?= so
                      	TARGET := $(TARGET_NAME)_libretro.$(EXT)
                      	SHARED := -shared -Wl,--no-undefined
                      	fpic := -fPIC
                      	CC   ?= gcc
                      	CFLAGS += -march=armv8-a+crc -mcpu=cortex-a53 -DARM
                      	ASFLAGS += -mcpu=cortex-a53
                      

                      lr-imame4all compiles but doesn't work.
                      No chances with reicast: too asm parts...

                      BuZzB 1 Reply Last reply Reply Quote 0
                      • BuZzB
                        BuZz administrators @roleo
                        last edited by BuZz

                        @roleo I have been generously offered an ODroid-C2 for free from Hardkernel so I will look into adding official support once it arrives. Thanks for your code feedback etc.

                        To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                        roleoR D 2 Replies Last reply Reply Quote 1
                        • roleoR
                          roleo @BuZz
                          last edited by

                          @BuZz
                          Good news!
                          I hope I can help you.

                          1 Reply Last reply Reply Quote 0
                          • roleoR
                            roleo
                            last edited by

                            Update.
                            Finally I compiled the lr-imame4all. I encountered two problems:
                            1 - The libco (src/libretro/libretro-common/libco) gives an error at runtime: "longjmp causes uninitialized stack frame", so I had to use the ucontext.c part instead of sjlj.c modifying libco.c (could be a performance issue).
                            2 - The file src/libretro/osinline.h contains some asm code that I tried to patch (sorry but I'm not an asm programmer :) ).

                            This is the code I used for the lr-imame4all.sh script:

                            function sources_lr-imame4all() {
                                gitPullOrClone "$md_build" https://github.com/libretro/mame2000-libretro.git
                                sed -i 's/#include "sjlj.c"/#include "ucontext.c"/g' src/libretro/libretro-common/libco/libco.c
                                sed -i 's/#include <retro_inline.h>/#include <retro_inline.h>\n#include <stdint.h>/g' src/libretro/osinline.h
                                sed -i 's/    int res_hi, res_lo;/    int64_t res;/g' src/libretro/osinline.h
                                sed -i 's/("smull\\t%1,%0,%2,%3"/("smull\\t%x0,%w1,%w2"/g' src/libretro/osinline.h
                                sed -i 's/: "=r"(res_hi), "=r"(res_lo)/: "=r"(res)/g' src/libretro/osinline.h
                                sed -i 's/return res_hi;/return res>>32;/g' src/libretro/osinline.h
                                sed -i 's/( " mov %2, %2, asr #1 \\n"/( " asr %2, %2, #1 \\n"/g' src/libretro/osinline.h
                            }
                            
                            1 Reply Last reply Reply Quote 0
                            • M
                              mphil906
                              last edited by mphil906

                              Hello,

                              I was able to compile emulationstation on my C2 successfully, but I get the following error when trying to run it:

                              lvl0:   Error initializing SDL!
                                      Failed to connect to the Mir Server
                              lvl0:   Renderer failed to initialize!
                              lvl0:   Window failed to intialize!
                              

                              This error occurs if lightdm is stopped or running. Any ideas? I'm new so go easy on me.

                              roleoR 1 Reply Last reply Reply Quote 0
                              • roleoR
                                roleo @mphil906
                                last edited by

                                @mphil906
                                During the build, the script has also built and installed libsdl mali-2.04?
                                Which libsdl2 packages are installed? You should have:

                                odroid@odroid64:~$ dpkg --list | grep sdl2
                                ii  libsdl2-2.0-0:arm64                   2.0.4+4mali                                   arm64        Simple DirectMedia Layer
                                hi  libsdl2-dev:arm64                     2.0.4+4mali                                   arm64        Simple DirectMedia Layer development files
                                

                                from this source:
                                https://github.com/RetroPie/SDL-mirror/tree/mali-2.0.4
                                and not the original ones of ubuntu.

                                M B 2 Replies Last reply Reply Quote 0
                                • M
                                  mphil906 @roleo
                                  last edited by

                                  @roleo
                                  Thank you for the reply, I was able to compile emulationstation succesfully. Indeed, the default Ubuntu sdl was installed. I cloned the original posters repository. I'm not entirely sure if this was the issue, but in the function platform_odroid-c2() {...} __platform_flags did not contain mali. This is what I used:

                                  function platform_odroid-c2() {
                                      __default_cflags="-O3 -march=armv8-a+crc -mtune=cortex-a53 -funsafe-math-optimizations"
                                      __default_asflags=""
                                      __default_makeflags="-j2"
                                      __platform_flags="armv8 neon mali" #added mali flag
                                      __qemu_cpu=cortex-a9
                                      __has_binaries=0
                                  }
                                  

                                  Not sure if this was the issue, but it compiles and runs. Thanks! Now attempting to compile retroarch.

                                  roleoR ShakzS 2 Replies Last reply Reply Quote 0
                                  • BuZzB
                                    BuZz administrators
                                    last edited by

                                    Just to note - I have a board now and will be looking at adding basic support as free time permits (ES + retroarch etc first).

                                    To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                                    1 Reply Last reply Reply Quote 1
                                    • roleoR
                                      roleo @mphil906
                                      last edited by

                                      @mphil906
                                      I think this was the issue.

                                      @BuZz
                                      Great!
                                      Thank you.

                                      1 Reply Last reply Reply Quote 0
                                      • ShakzS
                                        Shakz @mphil906
                                        last edited by

                                        @mphil906
                                        See now I was just about to give up on this...dang...lemmie drag the darn thing out and give it another shot!
                                        Thanks for posting!

                                        RetroPie tips, tricks, and tweaks: https://www.youtube.com/eazyhax

                                        1 Reply Last reply Reply Quote 0
                                        • roleoR
                                          roleo
                                          last edited by roleo

                                          With the last changes of the EmulationStation github I have a new problem during the configure phase:

                                          cmake . -DFREETYPE_INCLUDE_DIRS=/usr/include/freetype2/
                                          

                                          The cmake didn't find the vlc library.

                                          CMake Error at CMake/Packages/FindVLC.cmake:33 (macro_ensure_version):
                                            MACRO_ENSURE_VERSION Macro invoked with incorrect arguments for macro
                                            named: MACRO_ENSURE_VERSION
                                          Call Stack (most recent call first):
                                            CMakeLists.txt:51 (find_package)
                                          

                                          --- EDIT ---

                                          Sorry, my mistake.
                                          The libvlc-dev was missing.

                                          1 Reply Last reply Reply Quote 0
                                          • BuZzB
                                            BuZz administrators
                                            last edited by

                                            I am currently working on odroid-c2 support - not trying to put you off working on it, but in case you don't want to duplicate efforts etc.

                                            To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                                            1 Reply Last reply Reply Quote 0
                                            • First post
                                              Last post

                                            Contributions to the project are always appreciated, so if you would like to support us with a donation you can do so here.

                                            Hosting provided by Mythic-Beasts. See the Hosting Information page for more information.