EDIT: Having posted this to their issue tracker and stepped through it with some CMake devs, this actually isn't a CMake problem. Something is broken with my MSBuild installation that causes it to return the "The operation completed successfully." error. Still no resolution on the issue overall, but this narrows down the potential causes.
I'm trying to build a CMake project on Windows using the MS Visual C++ Build Tools 2015 (note: not full Visual Studio). CMake, however, is apparently unable to find cl.exe
cmake ..
-- Building for: Visual Studio 14 2015
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:4 (project):
No CMAKE_C_COMPILER could be found.
CMake Error at CMakeLists.txt:4 (project):
No CMAKE_CXX_COMPILER could be found.
I suspect this is because CMake is expecting to find the compiler in with the Visual Studio installation but perhaps the standalone build tools install it in a different location? Is it possible to configure CMake to look elsewhere for the compiler?
EDIT: To head this possibility off at the pass, cl.exe is definitely installed. When I open the Visual C++ shell (adds the tools to the path) cl.exe outputs:
cl.exe
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24210 for x86
Copyright (C) Microsoft Corporation. All rights reserved.
usage: cl [ option... ] filename... [ /link linkoption... ]
And that is the same environment I'm running cmake ..
from so cl.exe is definitely on the PATH for discovery by CMake.
EDIT 2: Looking at the CMakeError.log file I see a couple variants of the following
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed.
Compiler:
Build flags:
Id flags:
The output was:
1
Microsoft (R) Build Engine version 14.0.25420.1
Copyright (C) Microsoft Corporation. All rights reserved.
Build started 4/14/2017 11:58:13 AM.
Project "E:\<project_dir>\build\CMakeFiles\3.8.0-rc4\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 14.0\VC\bin\CL.exe /c /nologo /W0 /WX- /Od /Oy- /D _MBCS /Gm- /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Fo"Debug\\" /Fd"Debug\vc140.pdb" /Gd /TP /analyze- /errorReport:queue CMakeCXXCompilerId.cpp
TRACKER : error TRK0002: Failed to execute command: ""C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\CL.exe" @C:\Users\<user>\AppData\Local\Temp\tmpa0925a9f05d5426d82afdcee8d722031.rsp". The operation completed successfully. [E:\<project_dir>\build\CMakeFiles\3.8.0-rc4\CompilerIdCXX\CompilerIdCXX.vcxproj]
Done Building Project "E:\<project_dir>\build\CMakeFiles\3.8.0-rc4\CompilerIdCXX\CompilerIdCXX.vcxproj" (default targets) -- FAILED.
Build FAILED.
"E:\<project_dir>\build\CMakeFiles\3.8.0-rc4\CompilerIdCXX\CompilerIdCXX.vcxproj" (default target) (1) ->
(ClCompile target) ->
TRACKER : error TRK0002: Failed to execute command: ""C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\CL.exe" @C:\Users\<user>\AppData\Local\Temp\tmpa0925a9f05d5426d82afdcee8d722031.rsp". The operation completed successfully. [E:\<project_dir>\build\CMakeFiles\3.8.0-rc4\CompilerIdCXX\CompilerIdCXX.vcxproj]
0 Warning(s)
1 Error(s)
Time Elapsed 00:00:01.21
This looks like some kind of output compatibility issue, especially the "ERROR: The operation completed successfully." lines. I'm using CMake 3.8.0-rc4 and the Visual C++ 2015 Build Tools. Any ideas?
EDIT 3: I thought that upgrading from 3.8.0-rc4 to 3.8.0 might fix it, but no avail. I also considered that I was using 64bit CMake trying to build a 32 bit program so I changed that as well. No luck yet.
EDIT 4: Also, for the record, this does build with CMake on a PC with full VS 2015 installed.
In Visual Studio 2015, Visual Studio users can use a CMake generator to generate MSBuild project files, which the IDE then consumes for IntelliSense, browsing, and compilation.
CMake is not a build system itself; it generates another system's build files. It supports directory hierarchies and applications that depend on multiple libraries. It is used in conjunction with native build environments such as Make, Qt Creator, Ninja, Android Studio, Apple's Xcode, and Microsoft Visual Studio.
In the C/C++ ecosystem, the best tool for project configuration is CMake.
I'm not sure I bring a solution to your The operation completed successfully
problem, but I was able to compile a [big] real-life project using cmake 3.8.1 and C++2015 BuildTools.
The trick is simply to use the "VS2015 x64 Native Tools Command Prompt" (or x86). You either call cmake using this prompt, or you call
this prompt from your normal prompt and it will set your path properly.
REM Set up the include/lib paths of Visual Studio
call "C:\Program Files (x86)\Microsoft Visual C++ Build Tools\vcbuildtools.bat" amd64
cd to_build_dir
REM Call cmake with the right parameters
"C:\Program Files\CMake\bin\cmake.exe" .......
REM Build the XYZ project
MSBuild.exe SOLUTION_FILE.sln /t:XYZ .......
As I wrote, I'm not sure it will fix your error because I wasn't able to reproduce it. However, I know that my project compile only when I use the right prompt. When I'm not using it, I get some error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.
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