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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: gnutls on mingw64
Date: Tue, 26 Nov 2019 17:46:58 +0200
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To: Stephen Leake <stephen_leake@stephe-leake.org>
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> From: Stephen Leake <stephen_leake@stephe-leake.org>
> Date: Tue, 26 Nov 2019 04:34:10 -0800
> 
> gnutls-available-p returns nil. Running emacs under the debugger, I can
> trace this to LoadLibraryW failing; the file name is
> L"libgnutls-30.dll", which is in PATH as
> D:\msys64\mingw64\bin\libgnutls-30.dll, installed via pacman.
> 
> Currently neither w32_delayed_load nor init_gnutls_functions calls
> GetLastError; would it help to add that?

Does its value tell something useful in this case?

> Since the file should be found, it seems DllMain is returning False?
> What might be the reason for that?

Are you sure all of the dependencies of the DLL are also available and
appear first on PATH?  Maybe you have a DLL by the right name but
wrong architecture on PATH before that?