C++ 将“Qt5Widgets”的安装前缀添加到CMAKE_PREFIX_PATH
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Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH
提问by user3386675
I don't know a lot about cmake, I'm trying to build a client using cmake and Qt. Getting the following error:
我对 cmake 了解不多，我正在尝试使用 cmake 和 Qt 构建客户端。得到以下错误：
CMake Error at alethzero/CMakeLists.txt:26 (find_package): By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"Qt5Widgets", but CMake did not find one.Could not find a package configuration file provided by "Qt5Widgets" with any of the following names:
Qt5WidgetsConfig.cmake qt5widgets-config.cmakeAdd the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set "Qt5Widgets_DIR" to a directory containing one of the above files. If "Qt5Widgets" provides a separate development package or SDK, be sure it has been installed.
-- Configuring incomplete, errors occurred!
alethzero/CMakeLists.txt:26 (find_package) 中的 CMake 错误：通过在 CMAKE_MODULE_PATH 中不提供“FindQt5Widgets.cmake”，该项目
要求 CMake 找到
“Qt5Widgets”提供的包配置文件，但 CMake 没有找到。找不到“Qt5Widgets”提供的具有以下任何名称的包配置文件：
Qt5WidgetsConfig.cmake qt5widgets-config.cmake将“Qt5Widgets”的安装前缀添加到 CMAKE_PREFIX_PATH 或将“Qt5Widgets_DIR”设置为包含上述文件之一的目录。如果“Qt5Widgets”提供单独的开发包或SDK，请确保已安装。
-- 配置不完整，出现错误！
As far as I understand, I need to add the QT path to CMake. How do I do it? I have Qt installed in /home/user/Programs. All the explanations I find are "just do this or that". I need the exact Terminal commands so I can just learn how to do it in the future.
据我了解，我需要将 QT 路径添加到 CMake。我该怎么做？我在 /home/user/Programs 中安装了 Qt。我找到的所有解释都是“做这个或那个”。我需要确切的终端命令，以便我将来可以学习如何执行此操作。
Thanks!
谢谢！
UPDATE: export CMAKE_PREFIX_PATH=/home/user/Programsdid not help me.
更新：export CMAKE_PREFIX_PATH=/home/user/Programs没有帮助我。
回答by steveire
This is documented:
这是记录在案的：
http://doc.qt.io/qt-5/cmake-manual.html
http://doc.qt.io/qt-5/cmake-manual.html
The easiest way to use CMake is to set the CMAKE_PREFIX_PATH
environment variable to the install prefix of Qt 5
Do this
做这个
export CMAKE_PREFIX_PATH=/home/user/Programs/<other_stuff>
where references the compiler etc, so that this complete path is valid:
where 引用了编译器等，以便此完整路径有效：
/home/user/Programs/<other_stuff>/bin/qmake*
回答by lmiguelmh
Well, here you have a solution for Windows: How to find qt5 CMake module on windows
好吧，这里有一个适用于 Windows 的解决方案：How to find qt5 CMake module on windows
set (CMAKE_PREFIX_PATH "C:\Qt\Qt5.0.1\5.0.1\msvc2010\")
For your environment, I think you will have to change the path where Qt is located...
对于您的环境，我认为您将不得不更改 Qt 所在的路径...
Maybe this will help you:
https://github.com/Cockatrice/Cockatrice/issues/205
也许这会帮助你：https:
//github.com/Cockatrice/Cockatrice/issues/205
回答by Ebrahim Byagowi
I needed this on my macOS after Qt installation with brew install qt5:
安装 Qt 后，我需要在我的 macOS 上使用brew install qt5：
export CMAKE_PREFIX_PATH=/usr/local/Cellar/qt5/5.7.0/
回答by ryancheung
For ubuntu:
cmake -DCMAKE_PREFIX_PATH=/home/ryan/Qt/5.11.2/gcc_64 ..
对于 ubuntu：
cmake -DCMAKE_PREFIX_PATH=/home/ryan/Qt/5.11.2/gcc_64 ..
/home/ryan/Qt/is the Qt installation root path
/home/ryan/Qt/是Qt安装根路径
回答by fometeo
at an Ubuntu 16.04.4 LTS desktop the solution was
在 Ubuntu 16.04.4 LTS 桌面上，解决方案是
cmake .. -DMAKE_PREFIX_PATH=/usr/include/x86_64-linux-gnu/qt5
