Optimize samples build process and build 64 bit binaries by default (#90)

* Optimize samples build process

* Samples: build 64 bit version by default

samples/gui/wasm-runtime-wgl/linux-build/CMakeLists.txt

@@ -7,27 +7,8 @@ set(WASM_DIR  ${REPO_ROOT_DIR}/core/iwasm)
 set(APP_MGR_DIR ${REPO_ROOT_DIR}/core/app-mgr)
 set(SHARED_DIR ${REPO_ROOT_DIR}/core/shared-lib)
 
-set (lv_drivers_name lv_drivers)
-set (lv_name lvgl)
-set (LV_DRIVERS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../src/platform/linux/${lv_drivers_name})
-set (LVGL_DIR ${WASM_DIR}/lib/3rdparty/${lv_name})
-
-if ((NOT EXISTS ${LVGL_DIR}) OR (NOT EXISTS ${LV_DRIVERS_DIR}))
-        configure_file(${CMAKE_CURRENT_SOURCE_DIR}/CMakeLists.txt.in ${CMAKE_CURRENT_BINARY_DIR}/download_lvgl_drivers/CMakeLists.txt)
-
-        execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
-                RESULT_VARIABLE result
-                WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/download_lvgl_drivers )
-        if(result)
-                message(FATAL_ERROR "CMake step for lvgl drivers failed: ${result}")
-        endif()
-        execute_process(COMMAND ${CMAKE_COMMAND} --build .
-                RESULT_VARIABLE result
-                WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/download_lvgl_drivers )
-        if(result)
-                message(FATAL_ERROR "Build step for lvgl drivers failed: ${result}")
-        endif()
-endif()
+set (LV_DRIVERS_DIR ${WASM_DIR}/lib/3rdparty/lv_drivers)
+set (LVGL_DIR ${WASM_DIR}/lib/3rdparty/lvgl)
 
 file(GLOB_RECURSE LV_DRIVERS_SOURCES "${LV_DRIVERS_DIR}/*.c" )
 
@@ -95,10 +76,12 @@ include (${SHARED_DIR}/coap/lib_coap.cmake)
 set (PROJECT_SRC_DIR ${CMAKE_CURRENT_LIST_DIR}/../src/platform/${TARGET_PLATFORM})
 
 include_directories(${SHARED_DIR}/include)
+include_directories(${PROJECT_SRC_DIR})
 
 add_definitions (-DWASM_ENABLE_BASE_LIB)
 add_definitions (-Dattr_container_malloc=bh_malloc)
 add_definitions (-Dattr_container_free=bh_free)
+add_definitions (-DLV_CONF_INCLUDE_SIMPLE)
 
 add_library (vmlib
              ${WASM_PLATFORM_LIB_SOURCE}

samples/gui/wasm-runtime-wgl/linux-build/CMakeLists.txt.in

@@ -1,41 +0,0 @@
-# Copyright (C) 2019 Intel Corporation.  All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-cmake_minimum_required(VERSION 2.8.2)
-
-project(lvgl_download NONE)
-
-include(ExternalProject)
-
-ExternalProject_Add(${lv_name}
-    GIT_REPOSITORY https://github.com/littlevgl/lvgl.git
-    GIT_TAG        ""
-    BINARY_DIR     ""
-    SOURCE_DIR            "${LVGL_DIR}"
-    CONFIGURE_COMMAND     ""
-    BUILD_COMMAND         ""
-    INSTALL_COMMAND       ""
-    TEST_COMMAND          ""
-  )
-
-ExternalProject_Add(${lv_drivers_name}
-    GIT_REPOSITORY https://github.com/littlevgl/lv_drivers.git
-    GIT_TAG        ""
-    BINARY_DIR     ""
-    SOURCE_DIR            "${LV_DRIVERS_DIR}"
-    CONFIGURE_COMMAND     ""
-    BUILD_COMMAND         ""
-    INSTALL_COMMAND       ""
-    TEST_COMMAND          ""
-  )