build: bump minimum Clang version to 19

.github/actions/install-clang/action.yml

@@ -0,0 +1,15 @@
+name: Install Clang
+description: Installs a specific Clang version. Useful if the GitHub runner does not have it by default.
+inputs:
+  clang-version:
+    description: The Clang major version to install
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Install Clang
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y clang-${{ inputs.clang-version }}

.github/workflows/build-tarball.yml

@@ -30,8 +30,9 @@ concurrency:
 env:
   PYTHON_VERSION: '3.12'
   FLAKY_TESTS: keep_retrying
-  CC: sccache clang
-  CXX: sccache clang++
+  CLANG_VERSION: '19'
+  CC: sccache clang-19
+  CXX: sccache clang++-19
   SCCACHE_GHA_ENABLED: 'true'
 
 permissions:
@@ -45,6 +46,10 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           persist-credentials: false
+      - name: Install Clang ${{ env.CLANG_VERSION }}
+        uses: ./.github/actions/install-clang
+        with:
+          clang-version: ${{ env.CLANG_VERSION }}
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:
@@ -75,6 +80,10 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           persist-credentials: false
+      - name: Install Clang ${{ env.CLANG_VERSION }}
+        uses: ./.github/actions/install-clang
+        with:
+          clang-version: ${{ env.CLANG_VERSION }}
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:

.github/workflows/coverage-linux-without-intl.yml

@@ -36,8 +36,9 @@ concurrency:
 env:
   PYTHON_VERSION: '3.12'
   FLAKY_TESTS: keep_retrying
-  CC: sccache clang
-  CXX: sccache clang++
+  CLANG_VERSION: '19'
+  CC: sccache clang-19
+  CXX: sccache clang++-19
   SCCACHE_GHA_ENABLED: 'true'
 
 permissions:
@@ -51,6 +52,10 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           persist-credentials: false
+      - name: Install Clang ${{ env.CLANG_VERSION }}
+        uses: ./.github/actions/install-clang
+        with:
+          clang-version: ${{ env.CLANG_VERSION }}
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:

.github/workflows/coverage-linux.yml

@@ -36,8 +36,9 @@ concurrency:
 env:
   PYTHON_VERSION: '3.12'
   FLAKY_TESTS: keep_retrying
-  CC: sccache clang
-  CXX: sccache clang++
+  CLANG_VERSION: '19'
+  CC: sccache clang-19
+  CXX: sccache clang++-19
   SCCACHE_GHA_ENABLED: 'true'
 
 permissions:
@@ -51,6 +52,10 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           persist-credentials: false
+      - name: Install Clang ${{ env.CLANG_VERSION }}
+        uses: ./.github/actions/install-clang
+        with:
+          clang-version: ${{ env.CLANG_VERSION }}
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:

.github/workflows/test-internet.yml

@@ -33,8 +33,9 @@ concurrency:
 env:
   PYTHON_VERSION: '3.12'
   FLAKY_TESTS: keep_retrying
-  CC: clang
-  CXX: clang++
+  CLANG_VERSION: '19'
+  CC: clang-19
+  CXX: clang++-19
 
 permissions:
   contents: read
@@ -47,6 +48,10 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # v4.2.2
         with:
           persist-credentials: false
+      - name: Install Clang ${{ env.CLANG_VERSION }}
+        uses: ./.github/actions/install-clang
+        with:
+          clang-version: ${{ env.CLANG_VERSION }}
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:

.github/workflows/test-linux.yml

@@ -27,8 +27,9 @@ concurrency:
 env:
   PYTHON_VERSION: '3.12'
   FLAKY_TESTS: keep_retrying
-  CC: sccache clang
-  CXX: sccache clang++
+  CLANG_VERSION: '19'
+  CC: sccache clang-19
+  CXX: sccache clang++-19
   SCCACHE_GHA_ENABLED: 'true'
 
 permissions:
@@ -47,6 +48,10 @@ jobs:
         with:
           persist-credentials: false
           path: node
+      - name: Install Clang ${{ env.CLANG_VERSION }}
+        uses: ./node/.github/actions/install-clang
+        with:
+          clang-version: ${{ env.CLANG_VERSION }}
       - name: Set up Python ${{ env.PYTHON_VERSION }}
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065  # v5.6.0
         with:

configure.py

@@ -1236,8 +1236,8 @@ def check_compiler(o):
   print_verbose(f"Detected {'clang ' if is_clang else ''}C++ compiler (CXX={CXX}) version: {version_str}")
   if not ok:
     warn(f'failed to autodetect C++ compiler version (CXX={CXX})')
-  elif clang_version < (8, 0, 0) if is_clang else gcc_version < (12, 2, 0):
-    warn(f'C++ compiler (CXX={CXX}, {version_str}) too old, need g++ 12.2.0 or clang++ 8.0.0')
+  elif clang_version < (19, 1, 0) if is_clang else gcc_version < (12, 2, 0):
+    warn(f'C++ compiler (CXX={CXX}, {version_str}) too old, need g++ 12.2.0 or clang++ 19.1.0')
 
   ok, is_clang, clang_version, gcc_version = try_check_compiler(CC, 'c')
   version_str = ".".join(map(str, clang_version if is_clang else gcc_version))