Problems generating solution for VS 2017 with CMake
Turning my comments into an answer
The error -- The CXX compiler identification is unknown - No CMAKE_CXX_COMPILER could be found. basically means that CMake wasn't able to compile a simple test program (which it always does as part of identifying/validating the compiler).
You can take a look into CMakeFiles\CMakeError.log (relative to your binary output directory), the error reason should be in there.
Two possible reasons I came across so far:
Missing administrator rights. You can try running this again from a shell that has administrative rights to crosscheck if your Visual Studio was setup with the need for administrator rights.
Missing Windows SDK. Verify your SDK installation e.g. check that you have any Resource Compiler installed. It should be in a path similar to:
C:\Program Files (x86)\Microsoft SDKs\Windows\v[some version]\bin\RC.Exe
Visual Studio 2017 Installation
Please note the Visual Studio may not install all necessary C++ packages even when you select one of the C++ pre-defined packages (as I have e.g. used Desktop development with C++ and then added more packages under the Individual Components tab).
Here is which selection worked for me (VS2017 Community Edition, Windows 10):
If you have projects using MFC/ATL libraries you need to add it under SDKs, libraries, and frameworks subcategory:
References
- CMake Error at CMakeLists.txt:30 (project): No CMAKE_C_COMPILER could be found
- The CXX compiler identification is unknown
- VS 2010 and CMake: 'rc' is not recognized as an internal or external command
I'm using Windows 7.... And after @Florian told me in the comments to look into CMakeFiles/CMakeError.log I managed to fix the problem!
Here is the first log:
Compiling the C compiler identification source file "CMakeCCompilerId.c" failed.
Compiler:
Build flags:
Id flags:
The output was:
1
Microsoft (R) Build Engine version 15.1.548.43366
Copyright (C) Microsoft Corporation. All rights reserved.
Build started 3/10/2017 11:05:24 AM.
Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj" on node 1 (default targets).
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Platforms\x64\PlatformToolsets\v141\Toolset.targets(36,5): error MSB8036: The Windows SDK version 8.1 was not found. Install the required version of Windows SDK or change the SDK version in the project property pages or by right-clicking the solution and selecting "Retarget solution". [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj]
Done Building Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj" (default targets) -- FAILED.
Build FAILED.
"D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj" (default target) (1) ->
(Desktop_PlatformPrepareForBuild target) ->
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Platforms\x64\PlatformToolsets\v141\Toolset.targets(36,5): error MSB8036: The Windows SDK version 8.1 was not found. Install the required version of Windows SDK or change the SDK version in the project property pages or by right-clicking the solution and selecting "Retarget solution". [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj]
0 Warning(s)
1 Error(s)
Time Elapsed 00:00:00.28
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler:
Build flags:
Id flags:
The output was:
1
Microsoft (R) Build Engine version 15.1.548.43366
Copyright (C) Microsoft Corporation. All rights reserved.
Build started 3/10/2017 11:05:24 AM.
Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj" on node 1 (default targets).
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Platforms\x64\PlatformToolsets\v141\Toolset.targets(36,5): error MSB8036: The Windows SDK version 8.1 was not found. Install the required version of Windows SDK or change the SDK version in the project property pages or by right-clicking the solution and selecting "Retarget solution". [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj]
Done Building Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj" (default targets) -- FAILED.
Build FAILED.
"D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj" (default target) (1) ->
(Desktop_PlatformPrepareForBuild target) ->
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Platforms\x64\PlatformToolsets\v141\Toolset.targets(36,5): error MSB8036: The Windows SDK version 8.1 was not found. Install the required version of Windows SDK or change the SDK version in the project property pages or by right-clicking the solution and selecting "Retarget solution". [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj]
0 Warning(s)
1 Error(s)
Time Elapsed 00:00:00.13
It seemed I needed Windows SDK version 8.1 so I installed it as a component (had only version 10 installed). But then there was another error:
Compiling the C compiler identification source file "CMakeCCompilerId.c" failed.
Compiler:
Build flags:
Id flags:
The output was:
1
Microsoft (R) Build Engine version 15.1.548.43366
Copyright (C) Microsoft Corporation. All rights reserved.
Build started 3/10/2017 11:17:21 AM.
Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj" on node 1 (default targets).
PrepareForBuild:
Creating directory "Debug\".
Creating directory "Debug\CompilerIdC.tlog\".
InitializeBuildStatus:
Creating "Debug\CompilerIdC.tlog\unsuccessfulbuild" because "AlwaysCreate" was specified.
ClCompile:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.10.25017\bin\HostX86\x64\CL.exe /c /nologo /W0 /WX- /diagnostics:classic /Od /D _MBCS /Gm- /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Fo"Debug\\" /Fd"Debug\vc141.pdb" /Gd /TC /errorReport:queue CMakeCCompilerId.c
CMakeCCompilerId.c
Link:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.10.25017\bin\HostX86\x64\link.exe /ERRORREPORT:QUEUE /OUT:".\CompilerIdC.exe" /INCREMENTAL:NO /NOLOGO kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /MANIFEST /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /manifest:embed /PDB:".\CompilerIdC.pdb" /SUBSYSTEM:CONSOLE /TLBID:1 /DYNAMICBASE /NXCOMPAT /IMPLIB:".\CompilerIdC.lib" /MACHINE:X64 Debug\CMakeCCompilerId.obj
LINK : fatal error LNK1104: cannot open file 'ucrtd.lib' [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj]
Done Building Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj" (default targets) -- FAILED.
Build FAILED.
"D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj" (default target) (1) ->
(Link target) ->
LINK : fatal error LNK1104: cannot open file 'ucrtd.lib' [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdC\CompilerIdC.vcxproj]
0 Warning(s)
1 Error(s)
Time Elapsed 00:00:01.04
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler:
Build flags:
Id flags:
The output was:
1
Microsoft (R) Build Engine version 15.1.548.43366
Copyright (C) Microsoft Corporation. All rights reserved.
Build started 3/10/2017 11:17:22 AM.
Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj" on node 1 (default targets).
PrepareForBuild:
Creating directory "Debug\".
Creating directory "Debug\CompilerIdCXX.tlog\".
InitializeBuildStatus:
Creating "Debug\CompilerIdCXX.tlog\unsuccessfulbuild" because "AlwaysCreate" was specified.
ClCompile:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.10.25017\bin\HostX86\x64\CL.exe /c /nologo /W0 /WX- /diagnostics:classic /Od /D _MBCS /Gm- /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Fo"Debug\\" /Fd"Debug\vc141.pdb" /Gd /TP /errorReport:queue CMakeCXXCompilerId.cpp
CMakeCXXCompilerId.cpp
Link:
C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.10.25017\bin\HostX86\x64\link.exe /ERRORREPORT:QUEUE /OUT:".\CompilerIdCXX.exe" /INCREMENTAL:NO /NOLOGO kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /MANIFEST /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /manifest:embed /PDB:".\CompilerIdCXX.pdb" /SUBSYSTEM:CONSOLE /TLBID:1 /DYNAMICBASE /NXCOMPAT /IMPLIB:".\CompilerIdCXX.lib" /MACHINE:X64 Debug\CMakeCXXCompilerId.obj
LINK : fatal error LNK1104: cannot open file 'ucrtd.lib' [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj]
Done Building Project "D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj" (default targets) -- FAILED.
Build FAILED.
"D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj" (default target) (1) ->
(Link target) ->
LINK : fatal error LNK1104: cannot open file 'ucrtd.lib' [D:\doctest\build\CMakeFiles\3.8.0-rc2\CompilerIdCXX\CompilerIdCXX.vcxproj]
0 Warning(s)
1 Error(s)
Time Elapsed 00:00:00.60
So LINK : fatal error LNK1104: cannot open file 'ucrtd.lib' sounds a lot like I needed to install more components - and so I did:
Visual C++ runtime for UWPWindows Universal CRT SDK
And after that the problem is gone!