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<p class="MsoNormal">I am trying to get our continuous integration system working in a Windows Docker container.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We use CMake along with the Visual C++ compilers shipped with VS 2015.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have installed cmake-3.4.3-win32-x86 on the windows container, and also VS 2015 community with just the '/InstallSelectableItems', 'NativeLanguageSupport_VC', so just the C++ tools are installed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, when I run cmake -G "Visual Studio 14 2015 Win64", I first get:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The C compiler identification is unknown<o:p></o:p></p>
<p class="MsoNormal">The CXX compiler identification is unknown<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But then I try running it again, and then the compiler is picked up.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I know the recommendation is “run cmake in a VS developer command prompt”, but I’m in a Docker container, so I can’t pick my command prompt.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve tried running vcvarsall.bat in the container during the build before calling cmake -G, but it doesn’t fix the issue.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">So my question is: exactly what does cmake look for to pick up the VS compilers? Does “cl.exe” need to be on the PATH? Does a certain environment variable need to be set? Or a registry setting?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance,<o:p></o:p></p>
<p class="MsoNormal">Eric Erhardt<o:p></o:p></p>
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