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Perl on-embedded-devices

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Slides for a one day training to get Perl developers more familiar with embedded Devices, Yocto and cross compiling

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Perl on-embedded-devices

  1. 1. Perl on embedded Devices Jens Rehsack Niederrhein Perl Mongers German Perl Workshop 2018 Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 1 / 16
  2. 2. Login on Build Server Login on Build Server $ ssh -Y gpw_acc_${VLAN_GRP}@10 .0.${VLAN_GRP }0.1 # e.g. ssh -Y gpc_acc_4@10 .0.40.1 Your password is identical to your login name. Attach your device (to your Laptop) $ ls -l /dev | grep -i usb $ screen /dev/tty.usbserial 115200 On Windows use putty, for example. Optionally power on your device and watch the boot process Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 3 / 16
  3. 3. Setup Build-Tree Prepare Build-Tree (Build Server) $ mkdir -p ~/gpw -community -bsp/sources $ cd ~/gpw -community -bsp/ $ git clone -b master https :// github.com/rehsack/gpw -yocto -platform.git $ cd sources $ git clone -b master https :// github.com/rehsack/poky.git $ git clone -b master https :// github.com/rehsack/meta - openembedded.git $ git clone -b master https :// github.com/meta -cpan/meta -cpan.git $ git clone -b master https :// github.com/rehsack/meta -jens.git $ git clone -b master https :// github.com/rehsack/meta -gpw.git Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 4 / 16
  4. 4. Setup Environment Prepare Environment (Build Server) # gpw_acc_5 does , gpw_acc_8 uses 8 $ echo "export VLAN_GRP =5 export LANG=en_US.UTF -8 source ~/gpw -community -bsp/sources/poky/scripts/oe -init -bashrc" >> ~/. bashrc Please use your VLAN group from your name plate on the desk. Restart and prepare your shell (Build Server) $ exec bash $ oe_builddir use ~/gpw -community -bsp/gpw -yocto -platform Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 5 / 16
  5. 5. Setup Cache Prepare Cache (Build Server) Add the following lines to $BUILDDIR/conf/local.conf BB_GENERATE_MIRROR_TARBALLS = "1" INHERIT += "own -mirrors" SOURCE_MIRROR_URL = "file :/// home/gpw2018/downloads" SSTATE_MIRRORS ?= " file ://.* file :/// home/gpw2018/sstate -cache/PATH" Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 6 / 16
  6. 6. Enter Buildmode (Build Server) Enter Buildmode # create new screen session named bitbake $ screen -S bitbake $ oe_builddir use ~/gpw -community -bsp/gpw -yocto -platform $ WANTED_ROOT_DEV =emmc mkimgs updatable -app -image Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 8 / 16
  7. 7. Enter Flash (Build Server) Enter Flash (Build Server) # re -connect to screen session named bitbake $ screen -r bitbake $ WANTED_ROOT_DEV =emmc gpw_deploy flash Reset your device (Your Laptop) Reset your device and stop automatic booting by pressing space on the terminal attached to the device serial console. Flash device (Your Laptop, Device Screen) run netboot Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 9 / 16
  8. 8. Add packages (Build Server) Add rakudo* $ cd ${BSPDIR }/ sources/meta -gpw $ vim recipes -images/images/updatable -app -image.bbappend IMAGE_INSTALL_append = " rakudo -star " Add Dancer2 (Build Server) $ cd ${BSPDIR }/ sources/meta -gpw $ vim recipes -images/images/updatable -app -image.bbappend IMAGE_INSTALL_append = " dancer2 -perl " Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 11 / 16
  9. 9. Update image Update from Upstream (Build Server) $ cd ${BSPDIR }/ sources/poky $ git remote add upstream git :// git.yoctoproject.org/poky $ git fetch upstream $ git rebase upstream/master Repeat this for all cloned repositories . . . Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 13 / 16
  10. 10. Own software Add self written software (Build Server) $ cd ${BSPDIR }/ sources/meta -gpw $ mkdir recipes -service/myservice $ vim recipes -service/myservice/ myservice_git .bb DESCRIPTION = "My:: Service provides backend for cool stuff" LICENSE = "MIT" MAINTAINER = "my.name@my.company" HOMEPAGE = "https :// myservice.my.company/" LIC_FILES_CHKSUM = "file ://${ COMMON_LICENSE_DIR }/ MIT;md5 =..." SRC_REV = " abcdef0123456789abcdef0123456789abcdef01 " SRC_URI = " git :// scm.my.company/path/repo.git;rev=${SRC_REV} file :// run file ://my -service.json ..." RDEPENDS_${PN} += " daemontools " RDEPENDS_${PN} += "dancer2" RDEPENDS_${PN} += "moox -configfromfile -perl" do_install_appends () { install -d -m ${D}${ sysconfdir} install -m 0644 ${WORKDIR }/my -service.json ${D}${sysconfdir} install -m 0755 ${WORKDIR }/run ${D}${sysconfdir }/ daemontools /service/run } Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 14 / 16
  11. 11. Prepare Packger::Utils Prepare Packger::Utils (Build Server) # checkout and prepare Packager :: Utils $ mkdir ~/ Projects $ cd ~/ Projects $ git clone https :// github.com/rehsack/Packager -Utils.git $ cd Packager -Utils $ perl Makefile.PM $ cpanm installdeps . Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 15 / 16
  12. 12. Recipes for CPAN modules Recipes for CPAN modules (Build Server) # create list of available perl/cpan packages $ make && env BBPATH=$BUILDDIR perl -Mblib bin/pkg_util check up2date --packages_pattern "*-perl_ *.bb" --packages_pat $ make && env BBPATH=$BUILDDIR perl -Mblib bin/pkg_util create package --categories www --modules Mojolicious Jens Rehsack (Niederrhein.PM) Perl on embedded Devices German Perl Workshop 2018 16 / 16

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