Add standalone cases (#3536)

tests/standalone/test-running-modes/compile_wasm_app.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+#
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+
+set -e
+readonly COMPILE_CMD="/opt/wasi-sdk/bin/clang"
+
+if ! test -x ${COMPILE_CMD}; then
+  echo "wasi-sdk could not be found"
+  exit
+fi
+
+${COMPILE_CMD} -O3 \
+  -z stack-size=8192 -nostdlib -Wl,--allow-undefined -Wl,--no-entry -Wl,--initial-memory=65536 \
+  -o wasm-apps/mytest.wasm wasm-apps/mytest.c \
+  -Wl,--export=__main_argc_argv
+
+${COMPILE_CMD} -O3 \
+  -Wl,--no-entry -nostdlib \
+  -o wasm-apps/hello.wasm wasm-apps/hello.c \
+  -Wl,--export=echo