Add Linux/arm32 builds

Fixes #122

Or actually works around rather than fixes. The fix would be to have
moar packaged for Debian.

build.sh

@@ -8,12 +8,12 @@ fi
 VERSION="$(git describe --tags --dirty --always)"
 
 BINARY="moar"
-if [ -n "$GOOS$GOARCH" ]; then
+if [ -n "${GOOS}${GOARCH}" ]; then
     EXE=""
-    if [ "$GOOS" = "windows" ]; then
+    if [ "${GOOS}" = "windows" ]; then
         EXE=".exe"
     fi
-    BINARY="releases/$BINARY-$VERSION-$GOOS-$GOARCH$EXE"
+    BINARY="releases/${BINARY}-${VERSION}-${GOOS}-${GOARCH}${EXE}"
 fi
 
 # Linker flags version number trick below from here:
@@ -25,4 +25,4 @@ fi
 
 # This line must be last in the script so that its return code
 # propagates properly to its caller
-go build -ldflags="-s -w -X main.versionString=$VERSION" -o "$BINARY"
+go build -ldflags="-s -w -X main.versionString=${VERSION}" -o "${BINARY}"

release.sh

@@ -48,6 +48,7 @@ git tag --annotate "${VERSION}"
 #
 # NOTE: Make sure this list matches the one in test.sh
 GOOS=linux GOARCH=386 ./build.sh
+GOOS=linux GOARCH=arm ./build.sh # Ref: https://github.com/walles/moar/issues/122
 GOOS=darwin GOARCH=amd64 ./build.sh
 GOOS=windows GOARCH=amd64 ./build.sh
 

test.sh

@@ -26,6 +26,11 @@ go test -timeout 20s ./...
 echo "Testing cross compilation..."
 echo "  Linux i386..."
 GOOS=linux GOARCH=386 ./build.sh
+
+# Ref: https://github.com/walles/moar/issues/122
+echo "  Linux ARM32..."
+GOOS=linux GOARCH=arm ./build.sh
+
 echo "  macOS amd64..."
 GOOS=darwin GOARCH=amd64 ./build.sh
 echo "  Windows amd64..."