Airsim: cmake version error on Windows

Created on 25 Jan 2018 · 8Comments · Source: microsoft/AirSim

I have installed Unreal which is working fine.
Windows 10 , Visulal Studio 2015 , Python 3.6.

Now , when I am running build.cmd(tried both with cmd VS cmd)

cmake 3.9 is properly installed and the path is properly set. What is going wrong.?

Error: find: 'cmake version': No such file or directory Newer AirSim requires cmake verion " 3. 9" but you have " . " which is older. Press any key to download and install cmake (make sure to add it in path in install options)

doc update

Source

jayjagtap

Most helpful comment

What is said above is not wrong and has to be done, but it is not an answer to the question asked.

The problem here is not CMake, the problem is the Find command in this line:
'cmake --version ^| find "cmake version"'

In the cmd prompt, type:

where Find.exe

Output:
C:\cygwin64\bin\find.exe
C:\Windows\System32\find.exe

The find.exe of System32 has to come first. To do that, make sure that _PATH_ of your _System Environment Variable_ has _cygwin64_ paths at the end.

Once that your ouput is like that, it will work.

C:\Windows\System32\find.exe
C:\cygwin64\bin\find.exe

p.s: Cygwin64 was only used as an example, the second find.exe could come from another source

vincedjango on 20 Sep 2018

👍3

All 8 comments

I think cmake is not on path. You can check this by just typing cmake from AirSim folder. If you get 'cmake' is not recognized as an internal or external command then it means its not on path. When you install cmake, it gives you a choice for putting it on path. Unfortunately default is no so you have to make sure this is changed in install screen. If you have already finished installing cmake, just add its bin folder in path (default path on Windows is C:\Program Files\CMake\bin)

sytelus on 26 Jan 2018

Thak you for your reply.
I had selected the option of setting the path while installing and even checked in the environment variables. Its there.

This is the output when i type cmake from airsim folder.

More Information here.

Actually I have a urgency for drone training. Please show me a way to get out of this.

jayjagtap on 26 Jan 2018

Not really sure but it is certainly working with cmake 3.10.2, you might want to try installing that, also it is the version mentioned in check_cmake.bat , link https://cmake.org/files/v3.10/cmake-3.10.2-win64-x64.msi

SweetShot on 28 Jan 2018

I have the same problem! 'cmake was not found in path.'
installed VS2015 windows 10 unreal 4.18 ,but just can't run build.cmd

tsbio on 30 Jan 2018

Check out the temporary solution which would work over here.

https://github.com/Microsoft/AirSim/pull/761/commits/cc8a08cbf7af577e0f2be99218c21b544c66954f

jayjagtap on 30 Jan 2018

Did you restarted command prompt after cmake install? Change in Path environment variable doesn't take effect until you restart app.

sytelus on 30 Jan 2018

What is said above is not wrong and has to be done, but it is not an answer to the question asked.

The problem here is not CMake, the problem is the Find command in this line:
'cmake --version ^| find "cmake version"'

In the cmd prompt, type:

where Find.exe

Output:
C:\cygwin64\bin\find.exe
C:\Windows\System32\find.exe

The find.exe of System32 has to come first. To do that, make sure that _PATH_ of your _System Environment Variable_ has _cygwin64_ paths at the end.

Once that your ouput is like that, it will work.

C:\Windows\System32\find.exe
C:\cygwin64\bin\find.exe

p.s: Cygwin64 was only used as an example, the second find.exe could come from another source

vincedjango on 20 Sep 2018

👍3

Hi
Thanks @vincedjango . Great Help

But its better to try where Cmake in command promt
C:\cygwin64\bin\cmake.exe
C:\Program Files\CMake\bin\cmake.exe

here you can go to Environment Variables and make sure in user and system variable the position of C:\Program Files\CMake\bin\cmake.exe is above C:\cygwin64\bin\cmake.exe

It worked for me.