xp-sp3: change grammer to support Qt5.6.3 for xp with sp3 system.

CMakeLists.txt

@@ -1,11 +1,11 @@
 cmake_minimum_required(VERSION 3.16)
 
-project(frelay VERSION 0.1.3 LANGUAGES CXX)
+project(frelay VERSION 0.1.4 LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(PROJECT_URL "https://github.com/taynpg/frelay")
-set(QT_DEFAULT_MAJOR_VERSION 6)
+set(QT_DEFAULT_MAJOR_VERSION 5)
 set(QAPPLICATION_CLASS QApplication)
 
 if (MSVC)
@@ -19,15 +19,11 @@ add_definitions(-DCOMPILER_USE_MINGW)
 endif()
 
 if(WIN32)
-execute_process(COMMAND cmd /c ver
-    OUTPUT_VARIABLE VER_OUTPUT
-    OUTPUT_STRIP_TRAILING_WHITESPACE)
-if(VER_OUTPUT MATCHES "XP")
-    message(STATUS "Windows XP platform.")
-    add_definitions(-D_WIN32_WINNT=0x0501)
+if(DEFINED XP_PLATFORM_SUPPORT)
+message(STATUS "For Windows XP platform.")
+add_definitions(-D_WIN32_WINNT=0x0501)
 else()
-    message(STATUS "Windows NT platform.")
-    add_definitions(-D_WIN32_WINNT=0x0601)
+add_definitions(-D_WIN32_WINNT=0x0601)
 endif()
 endif()
 
@@ -39,7 +35,11 @@ include_directories(${PROJECT_BINARY_DIR})
 add_definitions(-DFMT_HEADER_ONLY)
 include_directories(3rd)
 add_subdirectory(3rd/SingleApplication-3.5.2)
+
+if(NOT DEFINED COMPILER_USE_MINGW)
 add_subdirectory(crashelper)
+endif()
+
 add_subdirectory(Protocol)
 add_subdirectory(Server)
 add_subdirectory(ClientCore)