如何在CMake脚本中设置路径环境变量?

I want to build my sources by Mingw compiler wich in not placed on my system PATH. I tried this in the beginning of my script:

我想通过Mingw编译器构建我的源代码，而不是放在我的系统路径上。我在我的剧本的开头尝试过:

set(Env{PATH} "c:/MyProject/Tools/mingw/bin/" "c:/MyProject/Tools/mingw/msys/1.0/bin/")

And this:

这:

set(CMAKE_PROGRAM_PATH "c:/MyProject/Tools/mingw/bin/"   "c:/MyProject/Tools/mingw/msys/1.0/bin/")
set(CMAKE_LIBRARY_PATH "c:/MyProject/Tools/mingw/bin/" "c:/MyProject/Tools/mingw/msys/1.0/bin/")
set(CMAKE_SYSTEM_PROGRAM_PATH "c:/MyProject/Tools/mingw/bin/" "c:/MyProject/Tools/mingw/msys/1.0/bin/")
set(CMAKE_SYSTEM_PREFIX_PATH "c:/MyProject/Tools/mingw/bin/" "c:/MyProject/Tools/mingw/msys/1.0/bin/")

The first variant doesn't work at all. A suggest that I can't overwrite the value of the environment variable in CMake script. The second script finds my mingw compiler, but catches the error while running gcc (can't find libgmp-10.dll which needs by gcc). This is because the PATH variable is not setted to my Mingw.

第一个变体根本不起作用。建议我不能在CMake脚本中覆盖环境变量的值。第二个脚本找到我的mingw编译器，但是在运行gcc时捕获错误(找不到libgmp-10)。需要的dll)。这是因为路径变量没有被设置为Mingw。

3 个解决方案

#1

Write a script file to start CMake.

编写一个脚本文件以启动CMake。

On Windows make a batch file:

在Windows上做一个批处理文件:

@echo off
set path=c:\MyProject\Tools\mingw\bin;c:\MyProject\Tools\mingw\msys\1.0\bin
"C:\Program Files\CMake 2.8\bin\cmake-gui.exe"

On Linux make a bash script:

在Linux上做一个bash脚本:

export PATH=$PATH:/your/path

#2

CMAKE_SYSTEM_PROGRAM_PATH is not meant to be modified, use

使用CMAKE_SYSTEM_PROGRAM_PATH不打算修改

LIST(APPEND CMAKE_PROGRAM_PATH  "c:/MyProject/Tools/mingw/bin/" ...)

#3

You might approach it as if it were a cross compiling toolchain, even if you're not cross compiling from Linux to Windows as in this example:

您可能会把它当作一个交叉编译工具链，即使您没有像本例中那样从Linux交叉编译到Windows:

http://www.vtk.org/Wiki/CmakeMingw

After you follow that guide you set the mingw toolchain at the command line when calling cmake:

在您遵循该指南之后，您在调用cmake时将mingw工具链设置在命令行:

~/src/helloworld/ $ mkdir build
~/src/helloworld/ $ cd build
~/src/helloworld/build/ $ cmake -DCMAKE_TOOLCHAIN_FILE=~/Toolchain-mingw32.cmake

then if you're using this a whole lot you can make an alias to limit typing in that ugly -D every time you want to regenerate makefiles:

如果你经常使用这个，你可以创建一个别名来限制每次你想重新生成makefile时输入那个难看的-D:

alias mingw-cmake='cmake -DCMAKE_TOOLCHAIN_FILE=~/Toolchain-mingw32.cmake'

#1