Split CI into per-compiler workflows with individual badges

.github/workflows/clang-libcpp.yml

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+name: Clang (libc++)
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Clang 21 libc++ -x- ${{ matrix.config }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        config: [Debug, Release]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Clang 21 and libc++
+        run: |
+          # https://github.com/actions/runner-images/issues/7192
+          echo 'APT::Get::Always-Include-Phased-Updates "false";' | sudo tee /etc/apt/apt.conf.d/99-phased-updates
+          sudo apt-get update && sudo apt-get -y upgrade --fix-missing
+          sudo apt-get install -y build-essential cmake ninja-build
+          wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
+          sudo add-apt-repository -y "deb http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-21 main"
+          sudo apt-get update
+          sudo apt-get install -y clang-21 libc++-21-dev libc++abi-21-dev
+
+      - name: Configure
+        run: >
+          cmake -S . -B build -G Ninja
+          -DCMAKE_CXX_COMPILER=clang++-21
+          -DCMAKE_BUILD_TYPE=${{ matrix.config }}
+          -DCMAKE_CXX_FLAGS=-stdlib=libc++
+
+      - name: Build
+        run: cmake --build build --parallel --config ${{ matrix.config }}
+
+      - name: Test
+        run: ctest --test-dir build --output-on-failure

.github/workflows/clang-libstdcpp.yml

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+name: Clang (libstdc++)
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Clang 21 libstdc++ -x- ${{ matrix.config }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        config: [Debug, Release]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Clang 21
+        run: |
+          # https://github.com/actions/runner-images/issues/7192
+          echo 'APT::Get::Always-Include-Phased-Updates "false";' | sudo tee /etc/apt/apt.conf.d/99-phased-updates
+          sudo apt-get update && sudo apt-get -y upgrade --fix-missing
+          sudo apt-get install -y build-essential cmake ninja-build
+          wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
+          sudo add-apt-repository -y "deb http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-21 main"
+          sudo apt-get update
+          sudo apt-get install -y clang-21
+
+      - name: Configure
+        run: >
+          cmake -S . -B build -G Ninja
+          -DCMAKE_CXX_COMPILER=clang++-21
+          -DCMAKE_BUILD_TYPE=${{ matrix.config }}
+
+      - name: Build
+        run: cmake --build build --parallel --config ${{ matrix.config }}
+
+      - name: Test
+        run: ctest --test-dir build --output-on-failure

.github/workflows/clang-macos.yml

@@ -0,0 +1,41 @@
+name: Clang (macOS)
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+
+jobs:
+  build:
+    name: Clang (Homebrew) -x- ${{ matrix.config }}
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        config: [Debug, Release]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install LLVM and CMake
+        run: |
+          brew install llvm cmake ninja
+          echo "$(brew --prefix llvm)/bin" >> $GITHUB_PATH
+
+      - name: Configure
+        run: >
+          cmake -S . -B build -G Ninja
+          -DCMAKE_CXX_COMPILER=$(brew --prefix llvm)/bin/clang++
+          -DCMAKE_OSX_SYSROOT=$(xcrun --show-sdk-path)
+          -DCMAKE_BUILD_TYPE=${{ matrix.config }}
+
+      - name: Build
+        run: cmake --build build --parallel --config ${{ matrix.config }}
+
+      - name: Test
+        run: ctest --test-dir build --output-on-failure

.github/workflows/gcc.yml

@@ -0,0 +1,45 @@
+name: GCC
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+
+jobs:
+  build:
+    name: GCC 15 -x- ${{ matrix.config }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        config: [Debug, Release]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install GCC 15
+        run: |
+          # https://github.com/actions/runner-images/issues/7192
+          echo 'APT::Get::Always-Include-Phased-Updates "false";' | sudo tee /etc/apt/apt.conf.d/99-phased-updates
+          sudo apt-get update && sudo apt-get -y upgrade --fix-missing
+          sudo apt-get install -y build-essential cmake ninja-build
+          sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+          sudo apt-get update
+          sudo apt-get install -y g++-15
+
+      - name: Configure
+        run: >
+          cmake -S . -B build -G Ninja
+          -DCMAKE_CXX_COMPILER=g++-15
+          -DCMAKE_BUILD_TYPE=${{ matrix.config }}
+
+      - name: Build
+        run: cmake --build build --parallel --config ${{ matrix.config }}
+
+      - name: Test
+        run: ctest --test-dir build --output-on-failure

.github/workflows/msvc.yml

@@ -0,0 +1,52 @@
+name: MSVC
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+    branches: [ main ]
+
+jobs:
+  build:
+    name: MSVC Preview -x- ${{ matrix.config }}
+    runs-on: windows-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        config: [Debug, Release]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install MSVC Build Tools Preview
+        shell: pwsh
+        run: |
+          $url = "https://aka.ms/vs/18/insiders/vs_buildtools.exe"
+          Invoke-WebRequest -Uri $url -OutFile "$env:TEMP\vs_buildtools.exe" -UseBasicParsing
+          $process = Start-Process -Wait -PassThru -FilePath "$env:TEMP\vs_buildtools.exe" `
+            -ArgumentList "--quiet  --wait --norestart --add Microsoft.VisualStudio.Workload.VCTools --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --add Microsoft.VisualStudio.Component.Windows11SDK.26100 --add Microsoft.VisualStudio.Component.VC.CMake.Project --includeRecommended"
+          $exitCode = $process.ExitCode
+          Write-Output "VS installer exit code: $exitCode"
+          if ($exitCode -notin 0,3010,3015) { throw "VS Installer failed: $exitCode" }
+
+      - name: Set up MSVC environment
+        uses: ilammy/msvc-dev-cmd@v1
+        with:
+          vsversion: '18'
+
+      - name: Configure
+        shell: pwsh
+        run: >
+          cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=${{ matrix.config }}
+
+      - name: Build
+        shell: pwsh
+        run: cmake --build build --parallel --config ${{ matrix.config }}
+
+      - name: Test
+        shell: pwsh
+        run: ctest --test-dir build --output-on-failure

README.md

@@ -1,4 +1,8 @@
-![Build & Test](https://github.com/GabrielDosReis/ipr/actions/workflows/main.yml/badge.svg)
+![MSVC](https://github.com/GabrielDosReis/ipr/actions/workflows/msvc.yml/badge.svg)
+![GCC](https://github.com/GabrielDosReis/ipr/actions/workflows/gcc.yml/badge.svg)
+![Clang (libstdc++)](https://github.com/GabrielDosReis/ipr/actions/workflows/clang-libstdcpp.yml/badge.svg)
+![Clang (libc++)](https://github.com/GabrielDosReis/ipr/actions/workflows/clang-libcpp.yml/badge.svg)
+![Clang (macOS)](https://github.com/GabrielDosReis/ipr/actions/workflows/clang-macos.yml/badge.svg)
 ![Analysis](https://github.com/GabrielDosReis/ipr/actions/workflows/analysis.yml/badge.svg)
 ![Docs](https://github.com/GabrielDosReis/ipr/actions/workflows/docs.yaml/badge.svg)