在 Archlinux 上无法找到或加载 Qt 平台插件“xcb”（Write！AppImage）

正在尝试安装写入！ Arch Linux 上安装了 qt5、freetype2 2.9.1 和 fontconfig 2:2.13.1+12+g5f5ec56-1 的 AppImage

[levi@astize Write!]$ ./write
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".

Available platform plugins are: xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)
  

跑步时与QT_DEBUG_PLUGINS=1

[levi@astize Write!]$ ./write
QFactoryLoader::QFactoryLoader() checking directory path "/tmp/.mount_unuY6s/usr/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/tmp/.mount_unuY6s/usr/plugins/platforms/libqxcb.so"
Found metadata in lib /tmp/.mount_unuY6s/usr/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 329989
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/tmp/.mount_unuY6s/usr/bin/platforms" ...
Cannot load library /tmp/.mount_unuY6s/usr/plugins/platforms/libqxcb.so: (/usr/lib/libfontconfig.so.1: undefined symbol: FT_Done_MM_Var)
QLibraryPrivate::loadPlugin failed on "/tmp/.mount_unuY6s/usr/plugins/platforms/libqxcb.so" : "Cannot load library /tmp/.mount_unuY6s/usr/plugins/platforms/libqxcb.so: (/usr/lib/libfontconfig.so.1: undefined symbol: FT_Done_MM_Var)"
This application failed to start because it could not find or load the Qt platform plugin "xcb"
in "".

Available platform plugins are: xcb.

Reinstalling the application may fix this problem.
Aborted (core dumped)
  

任何帮助，将不胜感激。

在 Qt 中编译 C++ 应用程序并将其部署到生产计算机后，我遇到了这个错误。以下是我为解决该问题所做的一些事情。

• 安装 Qt 库。我的安装在~/Qt/5.9.8/gcc_64/lib/在我的开发机器上。我只是将该目录复制到生产机器上。

• Use ldd -v /path/to/your/app查找并解决缺少库的问题。

• 设置环境变量：LD_LIBRARY_PATH=~/Qt/5.9.8/gcc_64/lib/:/path/to/any/custom/libs/for/your/app QT_PLUGIN_PATH=/usr/lib/x86_64-linux-gnu/qt5/plugins