Fix crossbuild script to continue after invalid arch.

.github/workflows/build.yml

@@ -6,18 +6,18 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@master
-      - uses: actions/setup-go@master
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
         with:
-          go-version: '1.14'
+          go-version: '1.16'
       - name: Run Cross-build
         run: ./crossbuild.sh
       - name: Show MemGator CLI Help
         run: /tmp/mgbins/memgator-linux-amd64
       - name: Upload Built MemGator Binaries
-        uses: actions/upload-artifact@master
+        uses: actions/upload-artifact@v2
         with:
           name: memgator-bins
           path: /tmp/mgbins

crossbuild.sh

@@ -7,24 +7,24 @@ echo "Building binaries for various platforms"
 # Create directory to store all binaries
 binsdir=/tmp/mgbins
 mkdir -p $binsdir
+rm -rf $binsdir/memgator-*
 echo "Output directory for binaries created: $binsdir"
 
-# OS and architecture matrix
-oses="linux darwin windows"
-arcs="386 amd64"
+# Platforms (OS/arch matrix)
+platforms="linux/amd64 darwin/amd64 windows/amd64 darwin/arm64"
 
-# Build binaries for all OSes and architectures
-for os in $oses; do
-  for arc in $arcs; do
-    echo "Building binary for $os/$arc"
-    fn=$binsdir/memgator-$os-$arc
-    if [ $os == "windows" ]; then
-      GOOS=$os GOARCH=$arc go build -v -o $fn.exe
-    else
-      GOOS=$os GOARCH=$arc CGO_ENABLED=0 go build -v -a -installsuffix cgo -o $fn
-    fi
-  done
+# Build binaries for all listed platforms
+for p in $platforms; do
+  os=${p%/*}
+  arc=${p#*/}
+  echo "Building binary for platform: $p"
+  fn=$binsdir/memgator-$os-$arc
+  if [ $os == "windows" ]; then
+    GOOS=$os GOARCH=$arc go build -v -o $fn.exe
+  else
+    GOOS=$os GOARCH=$arc CGO_ENABLED=0 go build -v -a -installsuffix cgo -o $fn
+  fi
 done
 
 echo "Following binaries have been created in: $binsdir"
-ls -lh $binsdir
+(cd $binsdir && ls -lh memgator-*)