Compile GCC on Ubuntu ARM

Author: antoyo

.github/workflows/main.yml

@@ -9,11 +9,14 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-24.04
+    runs-on: ${{ matrix.os }}
 
     strategy:
       fail-fast: false
       matrix:
+        os:
+          - ubuntu-24.04
+          - ubuntu-24.04-arm
         version:
           - { use_patch: true, asset_name: "gcc-15-without-int128.deb" }
           - { use_path: false, asset_name: "gcc-15.deb" }