Split out separate GNU and Musl gems

Due to changes in rake-compiler-dock, running a single Linux gem for
both GNU and Musl libraries no longer works reliably so precompile
separate gems and drop support for older Rubies accordingly.

.github/workflows/tests.yml

@@ -35,25 +35,45 @@ jobs:
           name: cruby-gem
           path: pkg/*.gem
 
-  precompile-aarch64-linux:
+  precompile-aarch64-linux-gnu:
     uses: ./.github/workflows/precompile-gem.yml
     with:
-      platform: aarch64-linux
+      platform: aarch64-linux-gnu
 
-  precompile-arm-linux:
+  precompile-aarch64-linux-musl:
     uses: ./.github/workflows/precompile-gem.yml
     with:
-      platform: arm-linux
+      platform: aarch64-linux-musl
 
-  precompile-x86-linux:
+  precompile-arm-linux-gnu:
     uses: ./.github/workflows/precompile-gem.yml
     with:
-      platform: x86-linux
+      platform: arm-linux-gnu
 
-  precompile-x86_64-linux:
+  precompile-arm-linux-musl:
     uses: ./.github/workflows/precompile-gem.yml
     with:
-      platform: x86_64-linux
+      platform: arm-linux-musl
+
+  precompile-x86-linux-gnu:
+    uses: ./.github/workflows/precompile-gem.yml
+    with:
+      platform: x86-linux-gnu
+
+  precompile-x86-linux-musl:
+    uses: ./.github/workflows/precompile-gem.yml
+    with:
+      platform: x86-linux-musl
+
+  precompile-x86_64-linux-gnu:
+    uses: ./.github/workflows/precompile-gem.yml
+    with:
+      platform: x86_64-linux-gnu
+
+  precompile-x86_64-linux-musl:
+    uses: ./.github/workflows/precompile-gem.yml
+    with:
+      platform: x86_64-linux-musl
 
   precompile-arm64-darwin:
     uses: ./.github/workflows/precompile-gem.yml
@@ -85,7 +105,7 @@ jobs:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        ruby: ["3.4.0-rc1", "2.6"] # oldest and newest
+        ruby: ["3.4.0-rc1", "3.0"] # oldest and newest
         libre2:
           - version: "20150501"
             soname: 0
@@ -128,7 +148,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
         sys: ["enable", "disable"]
     runs-on: "ubuntu-latest"
     steps:
@@ -151,7 +171,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
         sys: ["enable", "disable"]
     runs-on: "macos-13"
     steps:
@@ -174,14 +194,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0"]
         sys: ["enable", "disable"]
     runs-on: "windows-2019"
     steps:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby-pkgs@v1
         with:
-          ruby-version: ${{ matrix.ruby }}
+          ruby-version: "3.0"
           mingw: re2
           bundler-cache: true
       - uses: actions/download-artifact@v4
@@ -259,39 +278,60 @@ jobs:
         env:
           BUNDLE_PATH: ${{ github.workspace }}/vendor/bundle
 
-  test-precompiled-aarch64-linux:
-    needs: "precompile-aarch64-linux"
+  test-precompiled-aarch64-linux-gnu:
+    needs: "precompile-aarch64-linux-gnu"
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/download-artifact@v4
         with:
-          name: cruby-aarch64-linux-gem
+          name: cruby-aarch64-linux-gnu-gem
           path: pkg
       - name: Enable execution of multi-architecture containers by QEMU
         run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
       - run: |
           docker run --rm -v "$(pwd):/re2" -w /re2 \
-            --platform=linux/arm64/v8 \
+            --platform=linux/arm64 \
             ruby:${{ matrix.ruby }} \
             ./scripts/test-gem-install
 
-  test-precompiled-arm-linux:
-    needs: "precompile-arm-linux"
+  test-precompiled-aarch64-linux-musl:
+    needs: "precompile-aarch64-linux-musl"
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: cruby-aarch64-linux-musl-gem
+          path: pkg
+      - name: Enable execution of multi-architecture containers by QEMU
+        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+      - run: |
+          docker run --rm -v "$(pwd):/re2" -w /re2 \
+            --platform=linux/arm64 \
+            ruby:${{ matrix.ruby }}-alpine \
+            sh -c "gem update --system && apk add bash && ./scripts/test-gem-install"
+
+  test-precompiled-arm-linux-gnu:
+    needs: "precompile-arm-linux-gnu"
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/download-artifact@v4
         with:
-          name: cruby-arm-linux-gem
+          name: cruby-arm-linux-gnu-gem
           path: pkg
       - name: enable execution of multi-architecture containers by qemu
         run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
@@ -301,18 +341,39 @@ jobs:
             ruby:${{ matrix.ruby }} \
             ./scripts/test-gem-install
 
-  test-precompiled-x86-linux:
-    needs: "precompile-x86-linux"
+  test-precompiled-arm-linux-musl:
+    needs: "precompile-arm-linux-musl"
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: cruby-arm-linux-musl-gem
+          path: pkg
+      - name: enable execution of multi-architecture containers by qemu
+        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+      - run: |
+          docker run --rm -v "$(pwd):/re2" -w /re2 \
+            --platform=linux/arm/v7 \
+            ruby:${{ matrix.ruby }}-alpine \
+            sh -c "gem update --system && apk add bash && ./scripts/test-gem-install"
+
+  test-precompiled-x86-linux-gnu:
+    needs: "precompile-x86-linux-gnu"
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/download-artifact@v4
         with:
-          name: cruby-x86-linux-gem
+          name: cruby-x86-linux-gnu-gem
           path: pkg
       - name: Enable execution of multi-architecture containers by QEMU
         run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
@@ -322,12 +383,33 @@ jobs:
             ruby:${{ matrix.ruby }} \
             ./scripts/test-gem-install
 
-  test-precompiled-x86_64-linux:
-    needs: "precompile-x86_64-linux"
+  test-precompiled-x86-linux-musl:
+    needs: "precompile-x86-linux-musl"
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: cruby-x86-linux-musl-gem
+          path: pkg
+      - name: Enable execution of multi-architecture containers by QEMU
+        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
+      - run: |
+          docker run --rm -v "$(pwd):/re2" -w /re2 \
+            --platform=linux/386 \
+            ruby:${{ matrix.ruby }}-alpine \
+            sh -c "gem update --system && apk add bash && ./scripts/test-gem-install"
+
+  test-precompiled-x86_64-linux-gnu:
+    needs: "precompile-x86_64-linux-gnu"
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -337,18 +419,37 @@ jobs:
           bundler-cache: true
       - uses: actions/download-artifact@v4
         with:
-          name: cruby-x86_64-linux-gem
+          name: cruby-x86_64-linux-gnu-gem
           path: pkg
       - run: ./scripts/test-gem-install
         env:
           BUNDLE_PATH: ${{ github.workspace }}/vendor/bundle
 
+  test-precompiled-x86_64-linux-musl:
+    needs: "precompile-x86_64-linux-musl"
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+    runs-on: ubuntu-latest
+    container:
+      image: "ruby:${{ matrix.ruby }}-alpine"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          name: cruby-x86_64-linux-musl-gem
+          path: pkg
+      - run: gem update --system
+      - run: apk add bash
+      - run: ./scripts/test-gem-install
+
   test-precompiled-arm64-darwin:
     needs: "precompile-arm64-darwin"
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
     runs-on: macos-14
     steps:
       - uses: actions/checkout@v4
@@ -369,7 +470,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
+        ruby: ["3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
@@ -409,16 +510,12 @@ jobs:
 
   test-precompiled-x64-mingw32:
     needs: "precompile-x64-mingw32"
-    strategy:
-      fail-fast: false
-      matrix:
-        ruby: ["2.6", "2.7", "3.0"]
     runs-on: windows-2019
     steps:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "${{ matrix.ruby }}"
+          ruby-version: "3.0"
           bundler-cache: true
       - uses: actions/download-artifact@v4
         with:
@@ -429,24 +526,6 @@ jobs:
         env:
           BUNDLE_PATH: ${{ github.workspace }}/vendor/bundle
 
-  test-precompiled-x86_64-alpine:
-    needs: "precompile-x86_64-linux"
-    strategy:
-      fail-fast: false
-      matrix:
-        ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4.0-rc1"]
-    runs-on: ubuntu-latest
-    container:
-      image: "ruby:${{ matrix.ruby }}-alpine"
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/download-artifact@v4
-        with:
-          name: cruby-x86_64-linux-gem
-          path: pkg
-      - run: apk add bash libstdc++ gcompat
-      - run: ./scripts/test-gem-install
-
   ruby-memcheck:
     runs-on: "ubuntu-latest"
     env:

Rakefile

@@ -18,18 +18,22 @@ re2_gemspec.files << abseil_archive
 re2_gemspec.files << re2_archive
 
 cross_platforms = %w[
-  aarch64-linux
-  arm-linux
+  aarch64-linux-gnu
+  aarch64-linux-musl
+  arm-linux-gnu
+  arm-linux-musl
   arm64-darwin
   x64-mingw-ucrt
   x64-mingw32
-  x86-linux
+  x86-linux-gnu
+  x86-linux-musl
   x86-mingw32
   x86_64-darwin
-  x86_64-linux
+  x86_64-linux-gnu
+  x86_64-linux-musl
 ].freeze
 
-ENV['RUBY_CC_VERSION'] = %w[3.4.0 3.3.5 3.2.0 3.1.0 3.0.0 2.7.0 2.6.0].join(':')
+ENV['RUBY_CC_VERSION'] = %w[3.4.0 3.3.5 3.2.0 3.1.0 3.0.0].join(':')
 
 Gem::PackageTask.new(re2_gemspec).define