use cmake-format instead of gersemi in CI

.cmake-format.py

@@ -0,0 +1,32 @@
+# SPDX-FileCopyrightText: (C) The kokkos-fft development team, see COPYRIGHT.md file
+#
+# SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
+
+# -----------------------------
+# Options affecting formatting.
+# -----------------------------
+with section("format"):
+
+# How wide to allow formatted cmake files
+line_width = 120
+
+# If an argument group contains more than this many sub-groups (parg or kwarg
+# groups) then force it to a vertical layout.
+max_subgroups_hwrap = 3
+
+# If a statement is wrapped to more than one line, than dangle the closing
+# parenthesis on its own line.
+dangle_parens = True
+
+# If the trailing parenthesis must be 'dangled' on its on line, then align it
+# to this reference: `prefix`: the start of the statement,  `prefix-indent`:
+# the start of the statement, plus one indentation  level, `child`: align to
+# the column of the arguments
+dangle_align = 'prefix'
+
+# ------------------------------------------------
+# Options affecting comment reflow and formatting.
+# ------------------------------------------------
+with section("markup"):
+    # enable comment markup parsing and reflow
+    enable_markup = False

.github/workflows/__clang-format-check.yaml

@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: (C) The kokkos-fft development team, see COPYRIGHT.md file
+#
+# SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
+
+name: clang-format check
+
+on:
+  workflow_call:
+
+permissions: read-all
+
+jobs:
+  clang-formatting-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: DoozyX/clang-format-lint-action@v0.18
+      with:
+        source: 'common/ fft/ examples/ install_test/'
+        exclude: ''
+        extensions: 'hpp,cpp'
+        clangFormatVersion: 17

.github/workflows/__cmake-format-check.yaml

@@ -0,0 +1,23 @@
+# SPDX-FileCopyrightText: (C) The kokkos-fft development team, see COPYRIGHT.md file
+#
+# SPDX-License-Identifier: MIT OR Apache-2.0 WITH LLVM-exception
+
+name: cmake-format check
+
+on:
+  workflow_call:
+
+permissions: read-all
+
+jobs:
+  cmake-formatting-check:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - name: cmake-format lint action
+      uses: puneetmatharu/cmake-format-lint-action@2ac346e79e7ceac958bc637c1391285fb335ed7c # v1.0.5
+      with:
+        args: --config-files .cmake-format.py --in-place
+        file-regex: '(.*\.cmake$|.*\.cmake\.in$|CMakeLists.txt$)'
+    - name: check
+      run: git diff --exit-code 

.github/workflows/build_test.yaml

@@ -19,19 +19,15 @@ env:
 
 jobs:
   # run linter on the code
-  lint:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    - uses: DoozyX/clang-format-lint-action@v0.18
-      with:
-        source: 'common/ fft/ examples/ install_test/'
-        exclude: ''
-        extensions: 'hpp,cpp'
-        clangFormatVersion: 17
+  clang-format-check:
+    uses: ./.github/workflows/__clang-format-check.yaml
+
+  # run cmake format check
+  cmake-format-check:
+    uses: ./.github/workflows/__cmake-format-check.yaml
 
   # run typos for spell check
-  spell_check:
+  spell-check:
     name: spell check with typos
     runs-on: ubuntu-latest
     steps: