Newbie needs help on Step4

Usage
1

I’m completely new to CMake, so I’m running through the Tutorial.
Everything seems to be working fine, until I reach Step4.
https://cmake.org/cmake/help/latest/guide/tutorial/Installing%20and%20Testing.html

I have cmake installed in c:\program files\cmake and the code files in C:\Cmake\cmake-3.20.3\Help\guide\tutorial

Iam using Visual Studio Code as coding tool.

After going through the steps (Up to ‘Testing Support’), I have created Step4_build folder and I’m executing the build:

PS C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build> & ‘C:\Program Files\cmake\bin\cmake’ …\Step4
– Selecting Windows SDK version 10.0.18362.0 to target Windows 10.0.18363.
– Configuring done
– Generating done
– Build files have been written to: C:/Cmake/cmake-3.20.3/Help/guide/tutorial/Step4_build
PS C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build> & ‘C:\Program Files\cmake\bin\cmake’ --build .
Microsoft (R) Build Engine version 16.4.0+e901037fe for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

MathFunctions.vcxproj → C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build\MathFunctions\Debug\MathFunctions.lib

Tutorial.vcxproj → C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build\Debug\Tutorial.exe

But when I’m trying to create the install

PS C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build> & ‘C:\Program Files\cmake\bin\cmake’ --install .
– Install configuration: “Release”
CMake Error at cmake_install.cmake:39 (file):
file cannot create directory: C:/Program Files (x86)/Tutorial/bin. Maybe need administrative privileges.

So I used the prefix solution
PS C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build> & ‘C:\Program Files\cmake\bin\cmake’ --install . --prefix "C:\Cmake\cmake-3.20.3\Help\guide\tutorial\Step4_build"
CMake Error at cmake_install.cmake:39 (file):
file INSTALL cannot find
“C:/Cmake/cmake-3.20.3/Help/guide/tutorial/Step4_build/Release/Tutorial.exe”:
No error.

If the intall fails, then why is it “No Error”. But why did it fail in the first place.

Can someone help to find out what’s wrong?

I compared the modified Step4 folder with the Step5 folder and all files are completely identical.

Any support is appreciated.

Kind regards

BlueFlash

2

It seems that your install prefix is somewhere in a place that your user does not have rights to. I suppose this should be mentioned in the docs.

Cc: @betsy.mcphail

3

Based on the output you have built the “Debug” configuration, but the installation tried to install a “Release” configuration.

As I do not have experience with the VS or other MultiConfig generators, I’m not sure about the solution. But try to add a --config Release to your build command.

4

That might be another issue, but I don’t think a config mismatch would be the root cause of permission denied errors on a directory that either would want.

5

Yes, that first install command lacks permission as the error message says:

For the default program directories on Windows you usually need admin rights.
In case of a exe/msi Installer, you usually get a Popup to input your credentials. But I assume here the make just tries to copy the files.

Perhaps the tutorial should mention that installations to the default directories often require sudo/admin rights. And if you don’t have them you need to use a prefix, which is also explained in the tutorial.