Ogre和CMake出错

Question

我在Ubuntu12.04上安装了OGRE1.8.1(源包)，一切正常(我设法在Ogre3D界面上运行了一些示例)。然而，当我编译一个需要OpenCV、ArUco和Ogre库的外部项目(that one)时，我遇到了一个问题。当我运行项目的CMake时，我收到以下信息：

CMake Error at CMakeLists.txt:46 (find_package):
By not providing "FindOGRE.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "OGRE", but
CMake did not find one.

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

OGREConfig.cmake
ogre-config.cmake

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


-- Configuring incomplete, errors occurred!

我知道FindOGRE.cmake在哪里，它在/usr/local/lib/OGRE/cmake中，但是我不知道如何告诉CMake去查找那个文件夹并解决这个问题。

Answer 1

您只需将-D命令行选项与CMAKE_MODULE_PATH变量一起使用：

cmake . -DCMAKE_MODULE_PATH=/usr/local/lib/OGRE/cmake

Answer 2

为了便于记录，另一种解决方案是直接在CMakeLists.txt中添加模块路径。例如(在Debian 9上测试)：

set(CMAKE_MODULE_PATH "/usr/share/OGRE/cmake/modules/;${CMAKE_MODULE_PATH}")

只需确保在调用find_package之前添加行即可。

Answer 3

对我来说，只有在find_package之前在CMakeLists.txt中设置以下内容才行

set(OGRE_DIR /usr/share/OGRE/build/sdk/CMake)

请注意，包含OGREConfig.cmake的目录是CMake目录。由于某些原因，我的CMake忽略了CMAKE_MODULE_PATH。

也许，对某些人有帮助