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    Retropie 4.x on Odroid C2

    Scheduled Pinned Locked Moved Ideas and Development
    odroidbuild
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    • gizmo98G
      gizmo98 Global Moderator
      last edited by

      Remove mali because if you add this flag RetroPie-Setup tries to build a sdl2 mali armhf package instead of a arm64 package.

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      • P
        phoenix73
        last edited by phoenix73

        Thanks.

        Just updated my fork (https://github.com/hgomez/RetroPie-Setup/blob/master/scriptmodules/system.sh) and restarted build :)

        I'll do a PR if I succeed to have a working setup on Odroid C2

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        • P
          phoenix73
          last edited by

          new build complain about missing libsdl1.2-dev and libraspberrypi-dev ;/

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          • D
            detron
            last edited by

            thank you for your efforts to get RetroPie running on the Odroid C2 .

            I love Retropie, and I own a C2, and think the power it adds will be a great gaming system.

            P 2 Replies Last reply Reply Quote 0
            • P
              phoenix73 @detron
              last edited by

              @detron well I'm just trying to figure how to build it on C2, unsure if it will be easy or not.
              I posted also on Odroid Forum (http://forum.odroid.com/viewtopic.php?f=136&t=23889) to see if someone already tried to build it

              D 1 Reply Last reply Reply Quote 0
              • D
                detron @phoenix73
                last edited by

                @phoenix73

                I still appreciate knowing SOMEONE is trying. I do not have the right knowledge to try it myself.

                1 Reply Last reply Reply Quote 0
                • gizmo98G
                  gizmo98 Global Moderator
                  last edited by gizmo98

                  I expect odroid C2 runs a full X11 environment. I would start from scratch and run RetroPie-Setup with sudo __platform=generic-x11 ./retropie_setup.sh and look what happens. Or add x11 to your __platform_flags.

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                  • P
                    phoenix73
                    last edited by

                    I'll have a look to this approach too :)

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                    • P
                      phoenix73 @detron
                      last edited by

                      @detron libretro testing ppa (http://ppa.launchpad.net/libretro/testing/ubuntu/pool/) contains many packages for arm64, so it could be something to investigate too. I'll try to rebuild emulationstation deb on Odroid C2 too

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                      • D
                        detron @phoenix73
                        last edited by

                        @phoenix73

                        thank you. I am very comfortable with linux, but I do not have a good understanding of what truly goes into retroarch and emulationstation setup.

                        good luck, and if you get anywhere, please let me know.

                        thank you again

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                        • 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.

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                          • 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.

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                                        • 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
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