1.下载qt5.15.11源码 https://download.qt.io/official_releases/qt/5.15/5.15.11/single/qt-everywhere-opensource-src-5.15.11.zip 2.解码源码到桌面  3.安装cmake,python,perl, VisualStudio2019 StrawberryPerlforWindows Winflex-bisondownload|SourceForge.net  Downloadgperf-3.0.1.exe(GnuWin)(sourceforge.ne...