多个Cmake_Prefix_Paths [英] Multiple Cmake_Prefix_Paths
问题描述
在我开发的项目中，我们正在使用cmake来编译我们的服务。当前，我们需要从3个不同的位置获取Qt的数据，我很好奇是否有一种方法可以在三个不同的位置上运行一个cmake命令。
On a project I develop on, we're using cmake to compile our service. Currently, we need to get data for Qt from 3 different locations and I'm curious if there's a way to run one cmake command over three separate ones.
使用：
cmake -G "Visual Studio 12 2013" -DWITH_SERVER=1 -DCMAKE_PREFIX_PATH=C:\Qt\5.5\msvc2013\lib\cmake ..
cmake -G "Visual Studio 12 2013" -DWITH_SERVER=1 -DCMAKE_PREFIX_PATH=C:\protobuf\src ..
cmake -G "Visual Studio 12 2013" -DWITH_SERVER=1 -DCMAKE_PREFIX_PATH=C:\protobuf\cmake\build\Release ..
我们尝试传递相同的标志3次，并使用：和;
We've attempted to pass the same flag 3 times and separating the paths with : and ;, but none seem to work as expected.
推荐答案
在 CMAKE_PREFIX_PATH中提供多个路径 code>变量，您需要用; （分号）分隔每个条目。因此您的命令将如下所示：
To provide multiple paths in the CMAKE_PREFIX_PATH variable you need to delimit each entry by ;(semicolon). So your command will look like:
cmake -DCMAKE_PREFIX_PATH="C:\Qt\5.5\msvc2013\lib\cmake;C:\protobuf\src;C:\protobuf\cmake\build\Release"
要检查提供的路径是否还可以，请在cmake文件中使用以下代码：
To check if everything alright with the provided paths you can use the following code in the cmake file:
foreach(path ${CMAKE_PREFIX_PATH})
message("Path: " ${path})
endforeach(path)
它将打印提供的每个路径。
It will print every path provided.
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