Keep fix the CMake compatibility issue

```
CMake Error at CMakeLists.txt:4 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
```

Author: lum1n0us

samples/multi-module/CMakeLists.txt

@@ -4,6 +4,7 @@
 cmake_minimum_required (VERSION 3.14)
 
 include(CheckPIESupported)
+include(CMakePrintHelpers)
 
 project(multi_module)
 
@@ -137,6 +138,8 @@ else()
   message(STATUS "WASI_SYS_ROOT is ${WASI_SYS_ROOT}")
 endif()
 
+cmake_print_variables(CMAKE_COMMAND)
+
 # .c -> .wasm
 ExternalProject_Add(WASM_MODULE
   SOURCE_DIR         ${CMAKE_CURRENT_SOURCE_DIR}/wasm-apps
@@ -148,6 +151,7 @@ ExternalProject_Add(WASM_MODULE
                        -DCMAKE_TOOLCHAIN_FILE=${WASI_TOOLCHAIN_FILE}
                        -DCMAKE_SYSROOT=${WASI_SYS_ROOT}
                        -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+                       -DCMAKE_POLICY_VERSION_MINIMUM=3.5
                        -S ${CMAKE_CURRENT_SOURCE_DIR}/wasm-apps
   BUILD_COMMAND      ${CMAKE_COMMAND} --build .
   INSTALL_COMMAND    ${CMAKE_COMMAND} -E copy

samples/socket-api/CMakeLists.txt

@@ -87,6 +87,7 @@ ExternalProject_Add(wasm-app
                       -DWASI_SDK_PREFIX=${WASI_SDK_DIR}
                       -DCMAKE_TOOLCHAIN_FILE=${WASI_TOOLCHAIN_FILE}
                       -DCMAKE_SYSROOT=${WASI_SYS_ROOT}
+                      -DCMAKE_POLICY_VERSION_MINIMUM=3.5
                       ${CMAKE_CURRENT_SOURCE_DIR}/wasm-src
   BUILD_COMMAND     ${CMAKE_COMMAND} --build .
   INSTALL_COMMAND   ${CMAKE_COMMAND} -E copy

samples/wasm-c-api-imports/CMakeLists.txt

@@ -146,6 +146,7 @@ if(WAMR_BUILD_AOT EQUAL 1 AND WAMR_BUILD_INTERP EQUAL 0)
                         -DWASM_TO_AOT=ON
                         -DWAMRC_PATH=${CMAKE_CURRENT_BINARY_DIR}/wamrc
                         -DSOCKET_WASI_CMAKE=${WAMR_ROOT}/core/iwasm/libraries/lib-socket/lib_socket_wasi.cmake
+                        -DCMAKE_POLICY_VERSION_MINIMUM=3.5
     BUILD_COMMAND     ${CMAKE_COMMAND} --build build
     INSTALL_COMMAND   ${CMAKE_COMMAND} --install build --prefix ${CMAKE_CURRENT_BINARY_DIR}
   )
@@ -159,6 +160,7 @@ else()
                         -DCMAKE_TOOLCHAIN_FILE=${WASI_TOOLCHAIN_FILE}
                         -DCMAKE_SYSROOT=${WASI_SYS_ROOT}
                         -DSOCKET_WASI_CMAKE=${WAMR_ROOT}/core/iwasm/libraries/lib-socket/lib_socket_wasi.cmake
+                        -DCMAKE_POLICY_VERSION_MINIMUM=3.5
     BUILD_COMMAND     ${CMAKE_COMMAND} --build build
     INSTALL_COMMAND   ${CMAKE_COMMAND} --install build --prefix ${CMAKE_CURRENT_BINARY_DIR}
   )

tests/fuzz/wasm-mutator-fuzz/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.14)
 
 if (NOT DEFINED CMAKE_C_COMPILER)
 set (CMAKE_C_COMPILER "clang")

tests/fuzz/wasm-mutator-fuzz/workspace/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.14)
 
 project(wasm_mutator)
 

tests/standalone/test-module-malloc/wasm-app/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.14)
 project(wasm-app)
 
 set (WAMR_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../../../..)

tests/unit/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 2.9)
+cmake_minimum_required(VERSION 3.14)
 
 project(unit-test)
 

tests/unit/aot-stack-frame/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 2.9)
+cmake_minimum_required(VERSION 3.14)
 
 project (test-aot-stack-frame)
 

tests/unit/aot-stack-frame/wasm-apps/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 2.9)
+cmake_minimum_required(VERSION 3.14)
 
 project(wasm-apps-aot-stack-frame)
 

tests/unit/aot/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-cmake_minimum_required(VERSION 2.9)
+cmake_minimum_required(VERSION 3.14)
 
 project (test-aot)