CI: Add jobs for multiarch

.github/workflows/ci.yml

@@ -28,8 +28,10 @@ jobs:
           - x86-mingw32
           - x64-mingw-ucrt
           - x64-mingw32
-          - x86-linux
-          - x86_64-linux
+          - x86-linux-gnu
+          - x86_64-linux-gnu
+          - x86-linux-musl
+          - x86_64-linux-musl
 
     runs-on: ubuntu-latest
     env:
@@ -74,10 +76,10 @@ jobs:
             platform: x64-mingw-ucrt
           - os: ubuntu
             ruby: "2.5"
-            platform: x86_64-linux
+            platform: x86_64-linux-gnu
           - os: ubuntu
             ruby: "3.3"
-            platform: x86_64-linux
+            platform: x86_64-linux-gnu
 
     runs-on: ${{ matrix.os }}-latest
     steps:
@@ -90,6 +92,11 @@ jobs:
         uses: actions/download-artifact@v4
         with:
           name: gem-${{ matrix.platform }}
+      - name: Update rubygems - ruby-2.5
+        if: matrix.ruby == '2.5'
+        run: |
+          gem install --no-doc rubygems-update -v 3.3.27
+          update_rubygems
       - name: Install gem-${{matrix.platform}}
         run: gem install *.gem --verbose
       - name: bundle install
@@ -102,6 +109,40 @@ jobs:
         run: |
           bundle exec rake ci
 
+
+  job_binary_multiarch:
+    name: multiarch (${{matrix.platform}} on ${{matrix.from_image}} ${{matrix.image_platform}})
+    needs: docker_build
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - from_image: centos
+            image_platform: linux/x86_64
+            gem_platform: x86_64-linux-gnu
+            dockerfile: centos
+          - from_image: alpine
+            image_platform: linux/386
+            gem_platform: x86-linux-musl
+            dockerfile: alpine
+          - from_image: alpine
+            image_platform: linux/x86_64
+            gem_platform: x86_64-linux-musl
+            dockerfile: alpine
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Download gem-${{matrix.gem_platform}}
+        uses: actions/download-artifact@v4
+        with:
+          name: gem-${{ matrix.gem_platform }}
+      - name: Build image and Run tests
+        run: |
+          docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+          docker build --rm --platform ${{matrix.image_platform}} --build-arg from_image=${{matrix.from_image}} -t ruby-test -f test/env/Dockerfile.${{matrix.dockerfile}} .
+          docker run --rm -t --network=host -v `pwd`:/build ruby-test
+
   # These jobs use Buildx layer caching
   source_gem:
     name: Source gem

Gemfile

@@ -3,17 +3,19 @@ source "http://rubygems.org"
 # Specify your gem's dependencies in libusb.gemspec
 gemspec
 
-group :test do
+group :eventmachine do
   gem 'eventmachine'
+end
+group :test do
   gem 'minitest'
 end
 
-gem 'rake-compiler-dock', '~> 1.1'
+gem 'rake-compiler-dock', '~> 1.5-rc1'
 gem 'rake-compiler', '~> 1.0'
 gem 'bundler', '>= 1', '< 3'
 gem 'yard', '~> 0.6', '>= 0.9.36'
 
 # For some reason this is required in addition to the gemspec
 # when 'bundle config force_ruby_platform true' is active:
-gem 'ffi'
+gem 'ffi', '~> 1.17.0.rc1'
 gem 'mini_portile2'

Rakefile

@@ -52,8 +52,10 @@ CrossLibraries = [
   ['x86-mingw32', 'i686-w64-mingw32', 'bin/libusb-1.0.dll'],
   ['x64-mingw32', 'x86_64-w64-mingw32', 'bin/libusb-1.0.dll'],
   ['x64-mingw-ucrt', 'x86_64-w64-mingw32', 'bin/libusb-1.0.dll'],
-  ['x86-linux', 'i686-linux-gnu', 'lib/libusb-1.0.so'],
-  ['x86_64-linux', 'x86_64-linux-gnu', 'lib/libusb-1.0.so'],
+  ['x86-linux-gnu', 'i686-linux-gnu', 'lib/libusb-1.0.so'],
+  ['x86_64-linux-gnu', 'x86_64-linux-gnu', 'lib/libusb-1.0.so'],
+  ['x86-linux-musl', 'i686-linux-gnu', 'lib/libusb-1.0.so'],
+  ['x86_64-linux-musl', 'x86_64-linux-gnu', 'lib/libusb-1.0.so'],
 ].map do |ruby_platform, host_platform, libusb_dll|
   LIBUSB::CrossLibrary.new ruby_platform, host_platform, libusb_dll
 end
@@ -70,7 +72,8 @@ CrossLibraries.map(&:ruby_platform).each do |platform|
     sh "bundle package"
     RakeCompilerDock.sh <<-EOT, platform: platform
       bundle --local &&
-      #{ "sudo yum install -y libudev-devel &&" if platform=~/linux/ }
+      #{ "sudo yum install -y libudev-devel &&" if platform=~/linux-gnu/ }
+      #{ "sudo apt-get update && sudo apt-get install -y libudev-dev &&" if platform=~/linux-musl/ }
       bundle exec rake --trace cross:#{platform} gem "MAKE=make V=1 -j`nproc`" || cat tmp/*/ports/libusb/*/*.log
     EOT
   end

libusb.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
   s.extensions    = ['ext/extconf.rb']
   s.metadata["yard.run"] = "yri"
 
-  s.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
-  s.add_runtime_dependency 'ffi', '~> 1.0'
+  s.required_ruby_version = Gem::Requirement.new(">= 2.5.0")
+  s.add_runtime_dependency 'ffi', '~> 1.0.dev'
   s.add_runtime_dependency 'mini_portile2', LIBUSB::MINI_PORTILE_VERSION
 end

test/env/Dockerfile.alpine

@@ -0,0 +1,20 @@
+ARG from_image
+FROM ${from_image}
+
+RUN uname -a
+RUN apk add ruby ruby-etc ruby-rake git gcc make musl-dev gcompat
+
+RUN ruby --version
+RUN ruby -e 'puts File.read("/proc/#{Process.pid}/maps")'
+RUN gem env
+RUN gem inst bundler --conservative
+
+WORKDIR /build
+
+CMD ruby -v && \
+  ruby -e "puts Gem::Platform.local.to_s" && \
+  gem install ffi --pre --no-document && \
+  gem install --local *.gem --verbose --no-document && \
+  bundle config set --local without 'eventmachine' && \
+  bundle install && \
+  ruby -rlibusb -S rake test

test/env/Dockerfile.centos

@@ -0,0 +1,28 @@
+ARG from_image
+FROM ${from_image}
+
+RUN uname -a
+
+# Change download address of Centos-8 which is EOL
+RUN sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
+RUN sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
+
+RUN yum install -y ruby git gcc make
+
+RUN ruby --version
+RUN gem env
+
+RUN gem install rubygems-update:3.3.26 --no-doc && \
+  update_rubygems
+# centos-8 comes with Ruby 2.5, and this is the last version of bundler that supports it
+RUN gem install bundler -v2.2.28
+
+WORKDIR /build
+
+CMD ruby -v && \
+  ruby -e "puts Gem::Platform.local.to_s" && \
+  gem install ffi --pre --no-document && \
+  gem install --local *.gem --verbose --no-document && \
+  bundle config set --local without 'eventmachine' && \
+  bundle install && \
+  ruby -rlibusb -S rake test