静态构建不被支持。
分别列出从源代码构建 Qt 5 模块的要求，对于各个支持平台：
此外，需要以下工具为构建 Qt WebEngine 模块：
跳过 Qt WebEngine 构建的测试位于
qtwebengine
存储库，在
tools\qmake\mkspecs
子目录。可以找到它们通过搜索
skipBuild
.
所有平台都需要下列工具：
在 Windows，需要以下额外工具：
Qt WebEngine 只能在带有 x64 位工具链的 64 位 Windows 中进行构建。为构建用于 x86 应用程序的 Qt WebEngine，需要采用 Visual Studio 2017 x64 to x86 交叉编译工具链来配置和编译 Qt。可以在命令行中设置此工具链，通过运行
vcvarsall.bat amd64_x86
.
在 Linux，需要 Clang 或 GCC 第 5 版或更高版本。支持配置
linux-g++
and
linux-clang
.
Qt WebEngine 要求
pkg-config
以检测其大多数依赖。以下
pkg-config
文件要求：
dbus-1
fontconfig
若 Qt 被配置为
xcb
，以下
pkg-config
文件也是必需的：
libdrm
xcomposite
xcursor
xi
xrandr
xscrnsaver
xtst
进一步，开发包为
khr
and
libcap
需要安装。
On macOS ，需要下列：
注意：
Qt WebEngine cannot be built for the 32-bit mode of
macOS
(using the
macx-clang-32
mkspec
).
Building Qt WebEngine with earlier Qt versions (down to the last LTS version) is supported. It means that Qt WebEngine 5.11 can be built with Qt 5.9.x, Qt 5.10.x, and Qt 5.11.
要使用早期 Qt 版本构建 Qt Webengine：
qmake && make (&& make install)
.
Applications using Qt WebEngine are not compatible with the Mac App Store, because:
To make Qt WebEngine work correctly when streaming to an AppleTV from a MacBook that supports GPU switching, it is important to add the
NSSupportsAutomaticGraphicsSwitching
option to the application Info.plist file, with the value set to
YES
. Otherwise rendering issues might occur when creating new web engine view instances after Airplay is switched on or off.
If a new default QSurfaceFormat with a modified OpenGL profile has to be set, it should be set before the application instance is declared, to make sure that all created OpenGL contexts use the same OpenGL profile.
On macOS , if the default QSurfaceFormat is set after the application instance, the application will exit with qFatal (), and print a message that the default QSurfaceFormat should be set before the application instance.
Qt WebEngine provides out-of-the-box sandboxing support for Chromium render processes on Linux and macOS . Sandboxing is currently not supported on Windows due to a limitation in how the sandbox is set up and how it interacts with the host process provided by the Qt WebEngine libraries.
On macOS , there are no special requirements for enabling sandbox support.
On Linux, the kernel has to support the anonymous namespaces feature (kernel version >= 3.8) and seccomp-bpf feature (kernel version >= 3.5). Setuid sandboxes are not supported and are thus disabled.
To explicitly disable sandboxing, the
QTWEBENGINE_DISABLE_SANDBOX
environment variable can be set to 1 or alternatively the
--no-sandbox
command line argument can be passed to the user application executable.
Qt WebEngine enables accessibility support for web pages when the following conditions are met:
Due to some limitations, the Linux QPA plugin almost always reports that accessibility should be activated. On big HTML pages, this can cause a significant slowdown in rendering speed.
Because of that, from Qt 5.9 onwards, Qt WebEngine accessibility support is disabled by default on Linux. It can be re-enabled by setting the
QTWEBENGINE_ENABLE_LINUX_ACCESSIBILITY
environment variable to a non-empty value.
Because of a limitation in the Windows compositor, applications that show a fullscreen web engine view will not properly display popups or other top-level windows. The reason and workaround for the issue can be found at 基于 OpenGL 的窗口全屏 and QWindowsWindowFunctions::setHasBorderInFullScreen .