I got this Error

[note8g2018]

6> CMake generation started for configuration: 'x64-Debug'.
6> Command line: "cmd.exe" /c ""C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2019\ENTERPRISE\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\CMake\bin\cmake.exe"  -G "Ninja" -DCMAKE_INSTALL_PREFIX:PATH="C:\Users\GL553VD\Source\Repos\example-websocket\server\out\install\x64-Debug" -DCMAKE_CXX_COMPILER:FILEPATH="C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe" -DCMAKE_C_COMPILER:FILEPATH="C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe"  -DCMAKE_BUILD_TYPE="Debug" -DCMAKE_MAKE_PROGRAM="C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2019\ENTERPRISE\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\Ninja\ninja.exe" "C:\Users\GL553VD\Source\Repos\example-websocket\server" 2>&1"
6> Working directory: C:\Users\GL553VD\Source\Repos\example-websocket\server\out\build\x64-Debug
6> [CMake] -- The C compiler identification is MSVC 19.24.28316.0
6> [CMake] -- The CXX compiler identification is MSVC 19.24.28316.0
6> [CMake] -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe
6> [CMake] -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe -- works
6> [CMake] -- Detecting C compiler ABI info
6> [CMake] -- Detecting C compiler ABI info - done
6> [CMake] -- Detecting C compile features
6> [CMake] -- Detecting C compile features - done
6> [CMake] -- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe
6> [CMake] -- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe -- works
6> [CMake] -- Detecting CXX compiler ABI info
6> [CMake] -- Detecting CXX compiler ABI info - done
6> [CMake] -- Detecting CXX compile features
6> [CMake] -- Detecting CXX compile features - done
6> [CMake] CMake Error at C:\Users\GL553VD\Source\Repos\example-websocket\server\CMakeLists.txt:20 (find_package):
6> [CMake]   By not providing "Findoatpp.cmake" in CMAKE_MODULE_PATH this project has
6> [CMake]   asked CMake to find a package configuration file provided by "oatpp", but
6> [CMake]   CMake did not find one.
6> [CMake] 
6> [CMake]   Could not find a package configuration file provided by "oatpp" (requested
6> [CMake]   version 1.0.0) with any of the following names:
6> [CMake] 
6> [CMake]     oatppConfig.cmake
6> [CMake]     oatpp-config.cmake
6> [CMake] 
6> [CMake]   Add the installation prefix of "oatpp" to CMAKE_PREFIX_PATH or set
6> [CMake]   "oatpp_DIR" to a directory containing one of the above files.  If "oatpp"
6> [CMake]   provides a separate development package or SDK, be sure it has been
6> [CMake]   installed.
6> [CMake] 
6> [CMake] 
6> [CMake] -- Configuring incomplete, errors occurred!
6> [CMake] See also "C:/Users/GL553VD/source/repos/example-websocket/server/out/build/x64-Debug/CMakeFiles/CMakeOutput.log".
6> [CMake] 
6> cmd.exe /c ""C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2019\ENTERPRISE\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\CMake\bin\cmake.exe"  -G "Ninja" -DCMAKE_INSTALL_PREFIX:PATH="C:\Users\GL553VD\Source\Repos\example-websocket\server\out\install\x64-Debug" -DCMAKE_CXX_COMPILER:FILEPATH="C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe" -DCMAKE_C_COMPILER:FILEPATH="C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.24.28314/bin/HostX64/x64/cl.exe"  -DCMAKE_BUILD_TYPE="Debug" -DCMAKE_MAKE_PROGRAM="C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO\2019\ENTERPRISE\COMMON7\IDE\COMMONEXTENSIONS\MICROSOFT\CMAKE\Ninja\ninja.exe" "C:\Users\GL553VD\Source\Repos\example-websocket\server" 2>&1" returned with exit code: 1

[lganzzzo]

Hello @note8g2018 ,

It looks like you are missing the main oatpp module. You have to install required oatpp modules, then build the example.

Please see how to install oatpp on Windows - https://oatpp.io/docs/installation/windows/

Regards, Leonid

[note8g2018]

I go to this https://github.com/oatpp/oatpp and then open in Visual Studio then Clone then Build then Install. and work fine. is that not enough.

[lganzzzo]

Hm, so you have successfully installed the main oatpp module and when you are trying to build the example project cmake can't find the oatpp module?

[note8g2018]

yes

[lganzzzo]

Ok, thanks for the issue. I'll take a look at this.

[note8g2018]

When I open C:\Users\GL553VD\source\repos\oatpp\cmake I found 2 files module-config.cmake.in module-install.cmake I do not know if this help

[lganzzzo]

Hey @note8g2018 ,

It looks like a problem with cmake config on windows. Please double-check the cmake installation and package search paths.

Regards, Leonid