从 ParaView 构建自定义 Qt 应用程序示例时出错

Posted 2023-02-17

【中文标题】从 ParaView 构建自定义 Qt 应用程序示例时出错

【英文标题】：Error building custom Qt app examples from ParaView

【发布时间】：2019-11-25 13:47:41

【问题描述】：

我正在研究制作一个基于 Qt 的桌面应用程序以使用 Paraview 框架并制作一个更简单的 ParaView GUI。文档说这里有一些例子

https://gitlab.kitware.com/paraview/paraview/tree/master/Examples/CustomApplications

在 ParaView 论坛我读到了这个

First, you need to build ParaView.

Then, choose one of the subfolder you points out: there all are independent examples. Build it in a new build directory. You will need to specify the path to the ParaView build directory in CMake with ParaView_DIR.

我构建了 ParaView，但我不理解这部分 You will need to specify the path to the ParaView build directory in CMake with ParaView_DIR.

这是我的结构

dev
  |- pv
  |    |- build
  |    |- paraview-superbuild
  |
  |
  |- qt-examples
       |- one
          |- build
          |- Clone1

如何添加路径？

我尝试在 Clone1 的CMakeLists.txt 开头添加set(ParaView_DIR /Users/username/Desktop/dev/pv/build)，然后从构建文件夹中执行cmake ../Clone1。

但是出错了

CMake Error at CMakeLists.txt:6 (find_package):
  By not providing "FindParaView.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "ParaView",
  but CMake did not find one.

  Could not find a package configuration file provided by "ParaView" with any
  of the following names:

    ParaViewConfig.cmake
    paraview-config.cmake

  Add the installation prefix of "ParaView" to CMAKE_PREFIX_PATH or set
  "ParaView_DIR" to a directory containing one of the above files.  If
  "ParaView" provides a separate development package or SDK, be sure it has
  been installed.


-- Configuring incomplete, errors occurred!

我需要做什么？

【问题讨论】：

错误消息中的ParaViewConfig.cmake 或paraview-config.cmake 是否存在于/Users/username/Desktop/dev/pv/build 中？

从discourse.paraview.org/t/executing-custom-applications-examples/…发帖，讨论正在进行中

你可能需要在你的paraview构建目录中做make install，然后将安装目录传递给cmake，比如cmake -DParaView_DIR=/path/to/paraview-install

【参考方案1】：

好吧，错误消息说明了您需要做的所有事情。您需要设置变量CMAKE_PREFIX_PATH 指向您的构建路径。这可以在构建示例之一时在 cmake 命令行参数中完成：

cmake -DCMAKE_PREFIX_PATH=/Users/username/Desktop/dev/pv/build

当您尝试构建 Qt 程序时，您可能还需要设置 Qt 库的前缀路径。 CMAKE_PREFIX_PATH 是分号分隔的路径列表：

cmake -DCMAKE_PREFIX_PATH=/Users/username/Desktop/dev/pv/build;/Users/username/Qt/5.12.5/gcc_64

【讨论】：

按照 cmake 输出的建议，我发现使用 <Project>_DIR（或自 cmake 3.12 以来的 <Project>_ROOT，请参阅 cmake.org/cmake/help/v3.16/variable/…）更清洁。 CMAKE_PREFIX_PATH 是某种具有副作用的全局变量。