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cross-compile.md

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Cross-Compiling

Method Selection

  • aarch64 / armv7h
    • Native + Distcc
    • Native without Distcc is still faster than Docker
  • armv6h
    • Native + Distcc
    • Native without Distcc is slower than Docker
  • rust/cargo - not support Distcc

Distcc

  • Master - RPi
  • Client/Volunteer - x86-64 Arch Linux
  • Build package

Master - RPi

  • Install distcc + setup: bash <( curl -L https://github.com/rern/rern.github.io/raw/main/distcc-install-master.sh )

Client/Volunteer - x86-64 Arch Linux

  • Install distcc + toolchains: bash <( curl -L https://github.com/rern/rern.github.io/raw/main/distcc-install-client.sh )

Build package

  • Start Distcc
    • Master - No need
    • Client systemctl start distccd-ARCH (ARCH - armv6h, armv7h, armv8)
  • Setup and build as usual.
  • Monitor with another SSH: 
     su USER
 distccmon-text 1  # 1: @ 1 second
  • Copy to repository from Client: 
     scp root@MASTER_IP:/home/alarm/PKG_DIR/PKG.tar.xz /home/USER/GitHub/rern.github.io/ARCH
 bash <( curl -L https://github.com/rern/rAudio-addons/raw/main/0Packages/repoupdate.sh )
    • GitHub Desktop > Push

Docker

pacman -Sy docker
systemctl start docker
  • New CONTAINER
    • Source
      • Custom - docker import IMAGE_FILE.tar
        • rAudio Source
         xz -kd rAudio-ARCH-VERSION.img.xz
 # dolphin: mount the rAudio-ARCH-VERSION.img
 cd /run/media/USER/ROOT/
 bsdtar cvf /home/USER/IMAGE_FILE.tar .
 docker import IMAGE_FILE.tar
        • armv6h:
         docker run --privileged linuxkit/binfmt:v0.8

 #   optional:
 #	fakeroot        : --ulimit nofile=1024:524288 (soft:hard)
 #	armv7l > armv6l : -e QEMU_CPU=arm1176
 docker run -it --ulimit nofile=1024:524288 --name CONTAINER_NAME -e QEMU_CPU=arm1176 IMAGE_NAME bash
      • Docker's
        • List - docker search SEARCH_STRING
        • Get - docker pull IMAGE
      • Existing IMAGE - docker image ls
      • Docker's copy - docker image load -i IMAGE_FILE.tar
    • Initialize - docker run -it --name CONTAINER_NAME IMAGE_NAME bash
  • Existing CONTAINER
    • List - docker ps -a
    • Start - docker start CONTAINER_NAME
    • Run - docker exec -it CONTAINER_NAME bash
    • Stop - docker stop CONTAINER_NAME (Stop all - docker stop $( docker ps -aq ))
    • Rename - docker rename CONTAINER_NAME NEW_NAME
    • Remove - docker rm CONTAINER_NAME
  • Existing IMAGE
    • List - docker image ls
    • Copy
      • New IMAGE - docker commit CONTAINER_ID IMAGE_NAME
      • New file - docker save -o IMAGE_FILE.tar IMAGE_NAME
    • Remove - docker image rm IMAGE_NAME (REPOSITORY:TAG if more than 1)
  • Shared directory
    • Mount - -v /home/USER/SHARE:/DOCKER_SHARE
    • Copy file - docker cp NAME:/path/to/SOURCE_FILE .