iwyu action

.github/workflows/iwyu.yml

@@ -0,0 +1,56 @@
+name: IWYU
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: iwyu
+    runs-on: ubuntu-latest
+    container: ghcr.io/neomutt/fedora:38
+
+    env:
+      CONFIGURE_OPTIONS: --autocrypt --bdb --full-doc --gdbm --gnutls --gpgme --gss --kyotocabinet --lmdb --lua --lz4 --mixmaster --notmuch --pcre2 --qdbm --rocksdb --sasl --tdb --tokyocabinet --with-lock=fcntl --zlib --zstd
+
+    steps:
+    - name: Get number of CPU cores
+      uses: SimenB/github-actions-cpu-cores@v1
+      id: cpu-cores
+
+    - name: Checkout Code
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 5
+
+    - name: Checkout IWYU
+      uses: actions/checkout@v3
+      with:
+        repository: neomutt/iwyu
+        path: iwyu
+
+    - name: Compilation Cache
+      uses: hendrikmuhs/ccache-action@v1
+
+    - name: Git Workaround
+      run: git config --global --add safe.directory $(pwd)
+
+    - name: Configure Neomutt
+      run: ./configure CC=clang --compile-commands $CONFIGURE_OPTIONS
+
+    - name: Build Neomutt
+      run: make CC=clang -j ${{steps.cpu-cores.outputs.count}}
+
+    - name: Neomutt Version
+      run: ./neomutt -v
+
+    - name: Clang Format
+      run: |
+        find . \( -name .git -o -name queue.h -o -path './test/*' -o -path './autosetup/*' -o -path './docs/*' \) -prune -o -type f -name '*.c' -print | sed 's/^\.\///' | sort | xargs clang-format -i
+        git diff
+
+    - name: Include What You Use
+      run: |
+        export IWYU=/usr/bin/include-what-you-use
+        find . -name '*.[ch]' | sed 's/^\.\///' | grep -v -e debug -e '^test/' -e "^autosetup/" -e "^docs/" -e queue.h | sort | xargs iwyu/bin/iwyu.sh 2>&1 | grep -v "has correct" | cat -s
+