You can download the Build Tools without the IDE:
https://www.visualstudio.com/downloads/#build-tools-for-visual-studio-2017
https://www.microsoft.com/en-us/download/details.aspx?id=48159
Some details concerning the 2017 Build Tools:
These Build Tools allow you to build native and managed MSBuild-based applications without requiring the Visual Studio IDE. There are options to install the Visual C++ compilers and libraries, MFC, ATL, and C++/CLI support, and .NET and .NET Core support.
You can also follow the descriptions here: http://landinghub.visualstudio.com/visual-cpp-build-tools
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solved Visual C++ Compiler