Update GitHub Actions workflows to fix them

.github/workflows/build-BinaryBH-example.yml

@@ -1,51 +1,54 @@
 name: Build BinaryBH example with TwoPunctures
 
 on:
-  push: 
+  push:
   schedule:
     # Run once per month
     - cron:  '0 0 1 * *'
 
 jobs:
   build-BinaryBH-example:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     env:
       CHOMBO_HOME: ${{ github.workspace }}/Chombo/lib
       TWOPUNCTURES_SOURCE: ${{ github.workspace }}/TwoPunctures/Source
       OMP_NUM_THREADS: 1
 
     steps:
     - name: Checkout Chombo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v6
       with:
         repository: GRChombo/Chombo
         path: Chombo
 
     - name: Checkout GRChombo
-      uses: actions/checkout@v2
+      uses: actions/checkout@v6
       with:
         repository: GRChombo/GRChombo
         path: GRChombo
 
     - name: Checkout TwoPunctures
-      uses: actions/checkout@v2
+      uses: actions/checkout@v6
       with:
         path: TwoPunctures
 
-    - name: Install Chombo dependencies
+    - name: Install Chombo and TwoPunctures dependencies
       run: |
         sudo apt-get update
-        sudo apt-get -y --no-install-recommends install csh gfortran-10 g++-10 cpp-10 libhdf5-dev libhdf5-openmpi-dev openmpi-bin libblas-dev liblapack-dev libgetopt-complete-perl
-
-    - name: Set Compilers
-      run: |
-        sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 100
-        sudo update-alternatives --install /usr/bin/gfortran gfortran /usr/bin/gfortran-10 100
-        sudo update-alternatives --install /usr/bin/cpp cpp /usr/bin/cpp-10 100
+        sudo apt-get -y --no-install-recommends install \
+          csh \
+          libhdf5-dev \
+          libhdf5-openmpi-dev \
+          openmpi-bin \
+          libblas-dev \
+          liblapack-dev \
+          libgetopt-complete-perl \
+          libgsl-dev
 
     - name: Build Chombo
       run: |
-        cp $GITHUB_WORKSPACE/GRChombo/InstallNotes/MakeDefsLocalExamples/ubuntu-gcc.Make.defs.local $CHOMBO_HOME/mk/Make.defs.local
+        cp $GITHUB_WORKSPACE/GRChombo/InstallNotes/MakeDefsLocalExamples/ubuntu-gcc.Make.defs.local \
+           $CHOMBO_HOME/mk/Make.defs.local
         make -j 4 AMRTimeDependent AMRTools BaseTools BoxTools
       working-directory: ${{ env.CHOMBO_HOME }}
 

.github/workflows/style.yml

@@ -0,0 +1,38 @@
+name: Style
+
+on: push
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  cpp-linter:
+    name: clang-format
+    runs-on: ubuntu-latest
+    env:
+      LLVM_VERSION: '19'
+
+    steps:
+    - name: Checkout TwoPunctures
+      uses: actions/checkout@v6
+
+
+    - name: Run clang-format on modified files
+      uses: cpp-linter/cpp-linter-action@v2
+      id: linter
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        style: 'file' # Clang-Format style
+        tidy-checks: '-*' # Don't run clang-tidy
+        version: ${{ env.LLVM_VERSION }}
+        files-changed-only: true
+        lines-changed-only: false
+        # Write a comment to the PR with the output
+        step-summary: 'true' # Print output in the worflow job summary
+
+    - name: Fail job if checks fail
+      if: steps.linter.outputs.checks-failed > 0
+      run: exit 1
+

README.md

@@ -1,7 +1,7 @@
 # TwoPunctures (GRChombo)
 
 ![Build BinaryBH example with TwoPunctures](https://github.com/GRChombo/TwoPunctures/workflows/Build%20BinaryBH%20example%20with%20TwoPunctures/badge.svg)
-![Check Clang Format](https://github.com/GRChombo/TwoPunctures/workflows/Check%20Clang%20Format/badge.svg)
+![Style](https://github.com/GRChombo/TwoPunctures/workflows/Style/badge.svg)
 
 This repository originates from the
 [standalone TwoPunctures](https://bitbucket.org/relastro/twopunctures-standalone)