Trying to build Jinja2Cpp with latest version of CMake - Have errors about Nlohmann::JSON and RapidJSON

[DragonOsman]

I tried to generate project files for Jinja2Cpp using the latest version of CMake, 3.18.1. I tried with both clang-cl.exe and cl.exe as the compiler for VS2019. In both cases, I got this CMakeError:

-- RapidJSON found. Headers: C:/Jinja2Cpp/thirdparty/json/rapid/include
fatal: Needed a single revision
Unable to find current revision in submodule path 'thirdparty/json/nlohmann'
CMake Error at thirdparty/internal_deps.cmake:41 (add_subdirectory):
  The source directory

    C:/Jinja2Cpp/thirdparty/json/nlohmann

  does not contain a CMakeLists.txt file.
Call Stack (most recent call first):
  thirdparty/thirdparty-external-boost.cmake:3 (include)
  thirdparty/CMakeLists.txt:44 (include)
  CMakeLists.txt:172 (include)

Please help me out here if possible. Is there a way to resolve this?

[satarsa]

I have the same issues with both VC2019 and VC2017 after their upgrade up to 16.7.1 and 15.9.26 respectively... Unfortunately, I guess, it is not going to be fixed...

[DragonOsman]

I'm also having the problem after upgrade to VS2019 version 16.7.1.

Should we mention it on MSDN Forums? I have the problem on both Developer Command Prompt for VS2019 and also in the VS2019 IDE with its CMake support.

[satarsa]

May be this pull request would help?
#197
Could you try? I'm far from work for now, I'll be able to test it only after a few days.

[DragonOsman]

I'm not using a Conan package, though. I'm trying to build it directly. So I don't think that will help me. Thanks, though.

[DragonOsman]

I was able to solve that by re-cloning the library and then updating submodules.

But now I have a problem where I get build errors (I managed to successfully generate project files). I'll open a new issue for that.