Add Linux arm build

Author: timothyschoen

.github/workflows/makefile.yml

@@ -9,7 +9,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  ubuntu-build:
+  ubuntu-amd64-build:
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -30,10 +30,34 @@ jobs:
     - name: upload
       uses: actions/upload-artifact@v4
       with:
-        name: pdlua-ubuntu-pd${{ matrix.floatsize }}
+        name: pdlua-ubuntu-amd64-pd${{ matrix.floatsize }}
         path: build
 
-  macos-build:
+  ubuntu-arm64-build:
+    runs-on: ubuntu-24.04-arm
+    strategy:
+      matrix:
+        floatsize: [32, 64]
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: recursive
+        fetch-depth: 0
+
+    - name: install dependencies
+      run: git clone --branch=0.56-2 --depth=1 https://github.com/pure-data/pure-data.git
+
+    - name: make
+      run: make install PDDIR=./pure-data objectsdir=./build floatsize=${{ matrix.floatsize }} extension=linux-arm64-${{ matrix.floatsize }}.so
+
+    - name: upload
+      uses: actions/upload-artifact@v4
+      with:
+        name: pdlua-ubuntu-arm64-pd${{ matrix.floatsize }}
+        path: build
+
+  macos-universal-build:
     runs-on: macos-latest
     strategy:
       matrix:
@@ -56,10 +80,10 @@ jobs:
     - name: upload
       uses: actions/upload-artifact@v4
       with:
-        name: pdlua-macos-pd${{ matrix.floatsize }}
+        name: pdlua-macos-universal-pd${{ matrix.floatsize }}
         path: build
 
-  windows-build:
+  windows-amd64-build:
     runs-on: windows-latest
     strategy:
       matrix:
@@ -100,15 +124,15 @@ jobs:
     - name: upload
       uses: actions/upload-artifact@v4
       with:
-        name: pdlua-windows-pd${{ matrix.floatsize }}
+        name: pdlua-windows-amd64-pd${{ matrix.floatsize }}
         path: build
 
 # Big thanks to @tomara-x and @timothyschoen for showing me how to do this! -ag
 
   github-release:
     if: github.ref_type == 'tag'
     runs-on: ubuntu-latest
-    needs: [ubuntu-build, macos-build, windows-build]
+    needs: [ubuntu-amd64-build, ubuntu-arm64-build, macos-universal-build, windows-amd64-build]
 
     steps:
     - uses: actions/download-artifact@v4