Clean up the build directory if clean is set to true

.github/actions/setup/directories/action.yml

@@ -49,6 +49,13 @@ inputs:
     default: '1'
     description: The depth of commit history fetched from the remote repository
 
+  clean:
+    required: false
+    type: boolean
+    default: ''
+    description: >-
+      If set to true, clean build directory.
+
 outputs: {} # nothing?
 
 runs:
@@ -147,9 +154,12 @@ runs:
         grep -F A.rb a.rb > /dev/null && set "${@:27}"
         echo files="$*" >> $GITHUB_OUTPUT
 
-    - if: steps.dummy-files.outcome == 'success'
+    - if: steps.dummy-files.outcome == 'success' || inputs.clean == 'true'
       uses: gacts/run-and-post-run@674528335da98a7afc80915ff2b4b860a0b3553a # v1.4.0
       with:
-        working-directory: ${{ inputs.builddir }}
-        post:
-          rm ${{ steps.dummy-files.outputs.files }}
+        working-directory:
+        post: |
+          cd ${{ inputs.builddir }} && rm ${{ steps.dummy-files.outputs.files }}
+          cd ${{ inputs.builddir }} && make distclean
+          find ${{ inputs.builddir }} -ls
+          [ "${{ inputs.builddir }}" = "${{ inputs.srcdir }}" ] || rmdir ${{ inputs.builddir }}

.github/workflows/compilers.yml

@@ -240,6 +240,7 @@ jobs:
           srcdir: src
           builddir: build
           makeup: true
+          clean: true
 
       - name: Run configure
         run: >

.github/workflows/macos.yml

@@ -67,6 +67,7 @@ jobs:
           srcdir: src
           builddir: build
           makeup: true
+          clean: true
           dummy-files: ${{ matrix.test_task == 'check' }}
           # Set fetch-depth: 0 so that Launchable can receive commits information.
           fetch-depth: 10

.github/workflows/ubuntu.yml

@@ -79,6 +79,7 @@ jobs:
           srcdir: src
           builddir: build
           makeup: true
+          clean: true
           dummy-files: ${{ matrix.test_task == 'check' }}
           # Set fetch-depth: 10 so that Launchable can receive commits information.
           fetch-depth: 10