Merge pull request #5 from sysprog21/bump-clang-format

CI: Bump clang-format from 18 to 21

Author: jserv

.ci/check-format.sh

@@ -6,7 +6,7 @@ ret=0
 
 # Check C/C++ files with clang-format
 while IFS= read -r -d '' file; do
-    clang-format-18 -n --Werror "${file}" || ret=1
+    clang-format-21 -n --Werror "${file}" || ret=1
 done < <(git ls-files -z '*.c' '*.cpp' '*.h' ':!:*/submodule/*')
 
 # Check shell scripts with shfmt

.github/workflows/main.yml

@@ -22,14 +22,16 @@ jobs:
     timeout-minutes: 10
 
     env:
-      CLANG_FORMAT_VERSION: 18
+      CLANG_FORMAT_VERSION: 21
 
     steps:
       - name: Checkout
         uses: actions/checkout@v6
 
       - name: Install linting tools
         run: |
+          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/noble/ llvm-toolchain-noble-${{ env.CLANG_FORMAT_VERSION }} main"
           sudo apt-get update
           sudo apt-get install -y --no-install-recommends clang-format-${{ env.CLANG_FORMAT_VERSION }} shfmt
 

CONTRIBUTING.md

@@ -47,7 +47,7 @@ However, participation requires adherence to fundamental ground rules:
   For instance, opt for "initialize" over "initialise" and "color" rather than "colour".
 
 Software requirement:
-* [clang-format](https://clang.llvm.org/docs/ClangFormat.html) version 18.
+* [clang-format](https://clang.llvm.org/docs/ClangFormat.html) version 21+.
 * [shfmt](https://github.com/mvdan/sh).
 * [black](https://github.com/psf/black) version 25.1.0.