Refactor the wasm graphic layer (wgl) and the gui sample (#231)

samples/gui/wasm-apps/build_apps.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+APPS_ROOT=$(cd "$(dirname "$0")/" && pwd)
+cd ${APPS_ROOT}
+
+echo "OUT_DIR: ${OUT_DIR}"
+
+if [ -z ${OUT_DIR} ]; then
+    OUT_DIR=${APPS_ROOT}/out
+    echo "set the wasm app folder: ${OUT_DIR}"
+
+    if [ -d ${OUT_DIR} ]; then
+        rm -rf ${OUT_DIR}
+        echo "removed the present output folder: ${OUT_DIR}"
+    fi
+    mkdir ${OUT_DIR}
+
+fi
+
+if [ -z ${WAMR_DIR} ]; then
+    WAMR_DIR=${APPS_ROOT}/../../..
+fi
+
+
+cd ${APPS_ROOT}/increase
+
+rm -rf build
+mkdir build && cd build
+cmake .. -DCMAKE_TOOLCHAIN_FILE=${WAMR_DIR}/wamr-sdk/out/gui/app-sdk/wamr_toolchain.cmake
+make
+[ $? -eq 0 ] || exit $?
+mv ui_increase.wasm ${OUT_DIR}/
+
+# $makewrap
+# mv ui_app.wasm ${OUT_DIR}/
+
+cd ${APPS_ROOT}/decrease
+make
+[ $? -eq 0 ] || exit $?
+mv ui_decrease.wasm ${OUT_DIR}/
+
+echo "WASM files generated in folder  ${OUT_DIR}"
+
+echo "#####################  build WASM APPs finished #####################"