Update OS for clang-17 and add clang-18

Author: mborland

.github/workflows/ci.yml

@@ -19,12 +19,72 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  ubuntu-noble:
+    runs-on: ubuntu-24.04
+    strategy:
+      fail-fast: false
+      matrix:
+        compiler: [ g++-13, g++-14, clang++-17, clang++-18 ]
+        standard: [ c++20, c++23 ]
+        suite: [ github_ci_block_1, github_ci_block_2 ]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: '0'
+      - name: Set TOOLSET
+        run: echo ${{ matrix.compiler }} | awk '/^g/ { print "TOOLSET=gcc" } /^clang/ { print "TOOLSET=clang" }' >> $GITHUB_ENV
+      - name: Add repository
+        continue-on-error: true
+        id: addrepo
+        run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
+      - name: Retry Add Repo
+        continue-on-error: true
+        id: retry1
+        if: steps.addrepo.outcome=='failure'
+        run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
+      - name: Retry Add Repo 2
+        continue-on-error: true
+        id: retry2
+        if: steps.retry1.outcome=='failure'
+        run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
+      - name: Install packages
+        run: sudo apt-get install -y g++-13 g++-14 clang-17 clang-18 libgmp-dev libmpfr-dev libfftw3-dev
+      - name: Checkout main boost
+        run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
+      - name: Update tools/boostdep
+        run: git submodule update --init tools/boostdep
+        working-directory: ../boost-root
+      - name: Copy files
+        run: cp -r $GITHUB_WORKSPACE/* libs/math
+        working-directory: ../boost-root
+      - name: Install deps
+        run: python tools/boostdep/depinst/depinst.py math -I example -I tools
+        working-directory: ../boost-root
+      - name: Bootstrap
+        run: ./bootstrap.sh
+        working-directory: ../boost-root
+      - name: Generate headers
+        run: ./b2 headers
+        working-directory: ../boost-root
+      - name: Generate user config
+        run: 'echo "using $TOOLSET : : ${{ matrix.compiler }} : <cxxflags>-std=${{ matrix.standard }} ;" > ~/user-config.jam'
+        working-directory: ../boost-root
+      - name: Config info install
+        run: ../../../b2 config_info_travis_install toolset=$TOOLSET
+        working-directory: ../boost-root/libs/config/test
+      - name: Config info
+        run: ./config_info_travis
+        working-directory: ../boost-root/libs/config/test
+      - name: Test
+        run: ../../../b2 toolset=$TOOLSET ${{ matrix.suite }} define=CI_SUPPRESS_KNOWN_ISSUES define=SLOW_COMPILER define=BOOST_MATH_RUN_MP_TESTS
+        working-directory: ../boost-root/libs/math/test
+
   ubuntu-jammy:
     runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
-        compiler: [ g++-12, clang++-14, clang++-15, clang++-16, clang++-17 ]
+        compiler: [ g++-12, clang++-14, clang++-15, clang++-16 ]
         standard: [ c++14, c++17 ]
         suite: [ github_ci_block_1, github_ci_block_2 ]
     steps:
@@ -48,7 +108,7 @@ jobs:
         if: steps.retry1.outcome=='failure'
         run: sudo apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
       - name: Install packages
-        run: sudo apt-get install -y g++-12 clang-14 clang-15 clang-16 clang-17 libgmp-dev libmpfr-dev libfftw3-dev
+        run: sudo apt-get install -y g++-12 clang-14 clang-15 clang-16 libgmp-dev libmpfr-dev libfftw3-dev
       - name: Checkout main boost
         run: git clone -b develop --depth 1 https://github.com/boostorg/boost.git ../boost-root
       - name: Update tools/boostdep