Cross compile to aarch64? -- used to work

1

I am trying to cross compile from x86_64 to aarch64. I can build a x86_64 package, but when I attempt an aarch64 the build crashes. I am using electron and the crash is around the time that the ‘zypak-wrapper’ script is being used.

Some time ago, maybe months, I could succsesfully compile my app for aarch64.

I have checked and I have the aarch64 flatpak packages installed for my app.

My biggest concern is that flatpak does not support aarch64 cross compiling any more.

Below is some terminal output.

    $ flatpak --supported-arches
    x86_64
    i386

    $ flatpak install org.freedesktop.Sdk.Extension.node14/aarch64/21.08
    Looking for matches…
    Skipping: org.freedesktop.Sdk.Extension.node14/aarch64/21.08 is already installed

    $ flatpak install org.electronjs.Electron2.BaseApp/aarch64/21.08
    Looking for matches…
    Skipping: org.electronjs.Electron2.BaseApp/aarch64/21.08 is already installed

Note: I can go through all the required flatpak packages and the flatpak program will tell me they are there.

Here is some crash output.

    npm ERR! code ELIFECYCLE
    npm ERR! errno 1
    npm ERR! electron@18.1.0 postinstall: `node install.js`
    npm ERR! Exit status 1
    npm ERR! 
    npm ERR! Failed at the electron@18.1.0 postinstall script.
    npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
    npm timing npm Completed in 483509ms

    npm ERR! A complete log of this run can be found in:
    npm ERR!     /run/build/gpt-etc/flatpak-node/npm-cache/_logs/2022-09-15T15_39_46_810Z-debug.log
    Error: module gpt-etc: Child process exited with code 1

and btw, I cannot find the /run/build/ dir for the log on my system.

2

It never did support cross compilation. At best you can run it with qemu, where the whole build process with be emulated.

3

does not flatpak builder support an --arch=aarch64 target achitecture?

4

This is my yaml file. Breifly I could not even build the x86_64 arch. Then I realized that I had edited the node16 to read node14. This really baffled me. Now x86_64 works again. Now when I try to build for aarch64 I get an error, again somewhere around the zypak wrapper. It has something to do with electron-builder in the packaging stage. I then added zypak sources to the yaml file. Still I get the same error. I updated electron-builder to 23.5.1, but the error remains the same.

    app-id: org.theguy.GptEtc
    runtime: org.freedesktop.Platform
    runtime-version: '21.08'
    sdk: org.freedesktop.Sdk
    base: org.electronjs.Electron2.BaseApp
    base-version: '21.08'
    sdk-extensions:
      - org.freedesktop.Sdk.Extension.node16 
    command: run.sh
    separate-locales: false
    finish-args:
      - --share=ipc
      - --socket=x11
      - --socket=pulseaudio
      - --share=network
      - --filesystem=home
      - --filesystem=/tmp/
      - --filesystem=host
      - --filesystem=/var/local:ro 
      - --socket=system-bus
      - --device=dri
      - --filesystem=xdg-config/gtk-3.0:ro 
      - --env=GOOGLE_APPLICATION_CREDENTIALS=/var/local/google-application-credentials.json
      - --env=GPT_ETC_AUTO_FILE=gpt.txt 
      - --env=GPT_ETC_NOT_HANDHELD=true
    build-options:
      append-path: /usr/lib/sdk/node16/bin:/app/main/dist
      cflags: -O2 -g
      cxxflags: -O2 -g
      env:
        NPM_CONFIG_LOGLEVEL: info
    modules:

      - name: zypak
        sources:
          - type: git
            url: https://github.com/refi64/zypak
            commit: 55a60d110301e8dd37b631503c3524ab7baaf7aa

      - name: sox
        buildsystem: autotools
        config-opts: []
        sources: 
          - type: archive
            url: https://downloads.sourceforge.net/project/sox/sox/14.4.2/sox-14.4.2.tar.gz?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fsox%2Ffiles%2Fsox%2F14.4.2%2Fsox-14.4.2.tar.gz%2Fdownload&ts=1549545438
            sha256: b45f598643ffbd8e363ff24d61166ccec4836fea6d3888881b8df53e3bb55f6c 

      - name: iputils
        buildsystem: meson 
        config-opts: []
        sources: 
          - type: git 
            url: https://github.com/iputils/iputils.git 
            commit: 309f28518adbe161b5dfd6717f91a3fbe3ab8eab
     
      - name: curl
        buildsystem: cmake
        config-opts: []
        sources: 
          - type: git 
            url: https://github.com/curl/curl.git 
            commit: 5e9a703cf211a892e9b74ec11129994dcc241623 
     
      - name: gpt-etc
        buildsystem: simple
        build-options:
          env:
            electron_config_cache: /run/build/gpt-etc/npm-cache
            XDG_CACHE_HOME: /run/build/gpt-etc/flatpak-node/cache
            npm_config_cache: /run/build/gpt-etc/flatpak-node/npm-cache
            npm_config_nodedir: /usr/lib/sdk/node16  
            npm_config_offline: 'true'
        subdir: main
        sources:
          - type: dir
            path: ..
            dest: main
          - generated-sources.json
          # Wrapper to launch the app
          - type: script
            dest-filename: run.sh
            commands:
              - zypak-wrapper.sh /app/main/gpt-etc "$@"
        build-commands:
          # Install npm dependencies
          #- cat /app/bin/zypak-wrapper.sh 
          - jq '.scripts.start="electron --disable-gpu ."' <<<$(<package.json) > package.json

          #- pwd
          - install -Dm755 integration/org.theguy.GptEtc.desktop /app/share/applications/org.theguy.GptEtc.desktop
          - install -Dm755 integration/*.png /app/share/icons/hicolor/128x128/apps/org.theguy.GptEtc.png

          - npm install --offline
          # Build the app; in this example the `dist` script
          # in package.json runs electron-builder
          - |
            . ../flatpak-node/electron-builder-arch-args.sh
            npm run dist -- $ELECTRON_BUILDER_ARCH_ARGS   --linux --dir 
          # Bundle app and dependencies
          - 'cp -a dist/linux*unpacked /app/main'
          - 'install -Dm755 -t /app/bin/ ../run.sh'

This is the actual error.

Running: cp -a dist/linux*unpacked /app/main
cp: target ‘/app/main’ is not a directory
Error: module gpt-etc: Child process exited with code 1

5

Well, if dist/linux*unpacked resolve into more than one file/directory than /app/main must exist prior to it.

6

I think you are right. maybe special cp commands need to be written for the right content to end up in /app/main too.