build on various architectures

Author: schwicke

.github/workflows/makefile.yml

@@ -1,4 +1,4 @@
-name: Makefile CI
+name: OpenPHIGS build CI
 
 on:
   push:
@@ -11,6 +11,15 @@ jobs:
 
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm/v6
+          - linux/arm/v7
+          - linux/arm64
+
     steps:
     - uses: actions/checkout@v4