Add unit test suites (#3490)

tests/unit/custom-section/wasm-apps/CMakeLists.txt

@@ -0,0 +1,14 @@
+# Copyright (C) 2019 Intel Corporation.  All rights reserved.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+cmake_minimum_required(VERSION 2.9)
+
+project(wasm-apps-custom-section)
+
+# Add -g option so there will be debugger related custom sections
+add_custom_target(app.wasm ALL
+    COMMAND /opt/wasi-sdk/bin/clang -g -nostdlib
+            -Wl,--no-entry,--export-all
+            -o ${CMAKE_CURRENT_BINARY_DIR}/app.wasm
+            ${CMAKE_CURRENT_LIST_DIR}/app.c
+)

tests/unit/custom-section/wasm-apps/app.c

@@ -0,0 +1,10 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+int
+main(int argc, char const *argv[])
+{
+    return 0;
+}