参考： http://www.jianshu.com/p/166871ab31ef
#----------------------------------------------------------------
win32{
dst_file = $$PWD\\deploy\\
CONFIG(debug, debug|release){
src_file = $$OUT_PWD\debug\\$${TARGET}.exe
}else{
src_file = $$OUT_PWD\release\\$${TARGET}.exe
}
# dst_file 最后的 \\ 是必须的，用来标示 xcopy 到一个文件夹，若不存在，创建之
# Replace slashes in paths with backslashes for Windows
src_file ~= s,/,\\,g
dst_file ~= s,/,\\,g
system(xcopy $$src_file $$dst_file /y /e)
message($$dst_file)
message($$src_file)
}
#------------copy Target File to deploy folder end---------------
