build may fail on Windows 10

[felipenoris]

Mongoc package build fails on Windows 10, because libmongoc can't be dlopened.

Mongoc\deps\usr\bin\libmongoc-1.0.dll cannot be dlopen'ed

[felipenoris]

There's a possibility to change the builder to use mingw instead of Visual Studio, but I got stuck in https://jira.mongodb.org/browse/CDRIVER-3082 .

[felipenoris]

Also opened this issue regarding the use of Visual Studio and Appveyor to build binaries: https://jira.mongodb.org/browse/CDRIVER-3098.

[felipenoris]

Today I was able to compile libmongoc on a Windows 10 machine. On the same machine, I couldn't dlopen the library. So I guess this is an upstream issue.

[ziong]

i found that libmongoc-1.0.dll cannot be loaded when building the package.
ERROR: LoadError: LibraryProduct(nothing, ["libmongoc"], :libmongoc, "Prefix(C:\\Users\\?????\\.julia\\packages\\Mongoc\\DdY9i\\deps\\usr)") is not satisfied, cannot generate deps.jl!
This is because some dlls are missing.
copy these to [Mongoc package directory]/deps/usr/bin (alongside to libmongoc-1.0.dll):

• libzstd.dll
• ucrtbased.dll
• vcruntime140d.dll

and ]build Mongoc again.

I think it's because MVS is missing on the machine.
Hope this help.

[vilim]

I installed Mongoc without any issues now on Windows 10

[felipenoris]

@vilim good to hear that! Which version of Julia are you using? Can you post the result of versioninfo() here?

[vilim]

This is the output

Julia Version 1.3.0
Commit 46ce4d7933 (2019-11-26 06:09 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Xeon(R) CPU E5-2687W v3 @ 3.10GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, haswell)
Environment:
  JULIA_NUM_THREADS = 20

[rapus95]

How about building onto the artifact system? I.e. request a build from https://github.com/JuliaPackaging/Yggdrasil and use it as a jll package.

[waqasahmad531]

I installed Mongoc without any issues now on Windows 10

Can someone please share the complete procedure?

I have tried to install it few months ago but after many futile attempts I decided to delay learning Julia. But, now I am trying again and still no luck.

[aviks]

Might be fixed by #67

[felipenoris]

Should be fixed by #67 now.