[MSVC][std:c++latest] openFrameworks failed to build on MSVC

[xiaoxiao-Xu]

Hi All,

The MSVC team recently added openFrameworks as part of RWC testing to detect compiler regressions. And we found some errors when building openFrameworks with '/std:c++latest'. Could you please help look at this issue or provide some workarounds? Thanks in advance.

Repro steps:

1. git clone https://github.com/openframeworks/openFrameworks F:\gitP\openframeworks\openFrameworks
2. mkdir F:\gitP\openframeworks\openFrameworks\build_amd64
3. cd F:\gitP\openframeworks\openFrameworks\build_amd64
4. set _CL_= /std:c++latest
5. msbuild /m /p:Platform=x64 /p:Configuration=Release ../libs/openFrameworksCompiled/project/vs/openframeworksLib.vcxproj /t:Rebuild /p:OutDir=F:\gitP\openframeworks\openFrameworks\build_amd64 /p:PlatformToolset=v142

Build log: build.log

Error info:

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3313,22): error C2757: 'filesystem': a symbol with this name already exists and therefore this name cannot be used as a namespace name (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,36): error C2039: '_File_time_clock': is not a member of 'boost::filesystem' (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,52): error C2061: syntax error: identifier '_File_time_clock' (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3313,22): error C2757: 'filesystem': a symbol with this name already exists and therefore this name cannot be used as a namespace name (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C2065: 'file_clock': undeclared identifier (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,36): error C2039: '_File_time_clock': is not a member of 'boost::filesystem' (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,23): error C2923: 'std::chrono::time_point': 'file_clock' is not a valid template type argument for parameter '_Clock' (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp) 
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,52): error C2061: syntax error: identifier '_File_time_clock' (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C2065: 'file_clock': undeclared identifier (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,11): error C2955: 'std::chrono::time_point': use of class template requires template argument list (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,23): error C2923: 'std::chrono::time_point': 'file_clock' is not a valid template type argument for parameter '_Clock' (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C3861: 'file_clock': identifier not found (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3326,22): error C2757: 'filesystem': a symbol with this name already exists and therefore this name cannot be used as a namespace name (compiling source file ..\..\..\openFrameworks\3d\ofCamera.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,11): error C2955: 'std::chrono::time_point': use of class template requires template argument list (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C3861: 'file_clock': identifier not found (compiling source file ..\..\..\openFrameworks\app\ofMainLoop.cpp)

[danoli3]

Yeah C++17 or C++latest needs some code that handles file system changed and removal of Boost Dependency for VS There is a define however it needed a revision

You will find these code changes in the Android Update PR https://github.com/openframeworks/openFrameworks/pull/6767/files#diff-553ddc8ef14f451e89ac9abca3bdedbf3c615739b119491d992b41cbed6e357d

On Mon, 17 Jan 2022 at 17:52, xiaoxiao-Xu @.***> wrote:

Hi All,

The MSVC team recently added openFrameworks as part of RWC testing to detect compiler regressions. And we found some errors when building openFrameworks with '/std:c++latest'. Could you please help look at this issue or provide some workarounds? Thanks in advance.

Repro steps:

1. git clone https://github.com/openframeworks/openFrameworks F:\gitP\openframeworks\openFrameworks
2. mkdir F:\gitP\openframeworks\openFrameworks\build_amd64
3. cd F:\gitP\openframeworks\openFrameworks\build_amd64
4. set CL= /std:c++latest
5. msbuild /m /p:Platform=x64 /p:Configuration=Release ../libs/openFrameworksCompiled/project/vs/openframeworksLib.vcxproj /t:Rebuild /p:OutDir=F:\gitP\openframeworks\openFrameworks\build_amd64 /p:PlatformToolset=v142

Build log: build.log https://github.com/openframeworks/openFrameworks/files/7879609/build.log

Error info:

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3313,22): error C2757: 'filesystem': a symbol with this name already exists and therefore this name cannot be used as a namespace name (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,36): error C2039: '_File_time_clock': is not a member of 'boost::filesystem' (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,52): error C2061: syntax error: identifier '_File_time_clock' (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3313,22): error C2757: 'filesystem': a symbol with this name already exists and therefore this name cannot be used as a namespace name (compiling source file ......\openFrameworks\app\ofMainLoop.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C2065: 'file_clock': undeclared identifier (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,36): error C2039: '_File_time_clock': is not a member of 'boost::filesystem' (compiling source file ......\openFrameworks\app\ofMainLoop.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,23): error C2923: 'std::chrono::time_point': 'file_clock' is not a valid template type argument for parameter '_Clock' (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3318,52): error C2061: syntax error: identifier '_File_time_clock' (compiling source file ......\openFrameworks\app\ofMainLoop.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C2065: 'file_clock': undeclared identifier (compiling source file ......\openFrameworks\app\ofMainLoop.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,11): error C2955: 'std::chrono::time_point': use of class template requires template argument list (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,23): error C2923: 'std::chrono::time_point': 'file_clock' is not a valid template type argument for parameter '_Clock' (compiling source file ......\openFrameworks\app\ofMainLoop.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C3861: 'file_clock': identifier not found (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3326,22): error C2757: 'filesystem': a symbol with this name already exists and therefore this name cannot be used as a namespace name (compiling source file ......\openFrameworks\3d\ofCamera.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,11): error C2955: 'std::chrono::time_point': use of class template requires template argument list (compiling source file ......\openFrameworks\app\ofMainLoop.cpp) C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\include\chrono(3321,34): error C3861: 'file_clock': identifier not found (compiling source file ......\openFrameworks\app\ofMainLoop.cpp)

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[xiaoxiao-Xu]

Thanks for your response! BTW, when will this PR be merged to master branch?

[2bbb]

related #6585

[ofTheo]

also see #6844 which should be merged soon. c++17 and filesystem should all be good in that branch.

Will see if I can reproduce with the steps you listed or see if it is fixed. Thanks!