report llvm-target/cpu empty warning in all targets check

_demo/targetsbuild/build-all.sh

@@ -2,6 +2,7 @@
 
 # Initialize arrays to store results
 successful_targets=()
+warned_targets=()
 failed_targets=()
 
 for target in \
@@ -211,15 +212,22 @@ xiao-esp32c3 \
 xiao-rp2040 \
 xiao \
 xtensa; do
-	output=$(../../llgo.sh build -v -target $target -o hello.out . 2>&1)
+	output=$(../../llgo.sh build -target $target -o hello.out . 2>&1)
 	if [ $? -eq 0 ]; then
 		echo ✅ $target `file hello.out`
 		successful_targets+=("$target")
+	else
+		# Check if output contains warning messages
+		if echo "$output" | grep -q "does not have a valid LLVM target triple\|does not have a valid CPU configuration"; then
+			echo ⚠️ $target
+			echo "$output"
+			warned_targets+=("$target")
 		else
 			echo ❌ $target
 			echo "$output"
 			failed_targets+=("$target")
 		fi
+	fi
 done
 
 echo ""
@@ -231,6 +239,12 @@ for target in "${successful_targets[@]}"; do
 	echo "$target"
 done
 
+echo ""
+echo "Warned targets (${#warned_targets[@]} total):"
+for target in "${warned_targets[@]}"; do
+	echo "$target"
+done
+
 echo ""
 echo "Failed targets (${#failed_targets[@]} total):"
 for target in "${failed_targets[@]}"; do