Building Erlang on Windows - crypto fails

[Dan Gudmundsson]

The "./configure" step should have told you about any problems.
What does it say?

We run with Openssl installed (as documented) in c:/OpenSSL-Win64
I don't know if '--with-ssl' flag is used for the windows build or not?

The configure "hacks" to support windows are intricate in crypto so there
might be problems there, as I said we only test the way it was documented.

And send a PR with any fix to the crypto configure test if you find
improvement
possibilities. :-)

/Dan

On Tue, Jun 9, 2020 at 8:04 AM Matt Myers <matt.myers.real@REDACTED> wrote:

> Hello,
> I've been able to successfully build Erlang from master (OTP 24 rc0) on
> Windows, but the crypto module is always failing (see note below).
> I've built OpenSSL 1.1.1g successfully, and a test application built in C
> works OK.
>
> Would it be possible to get the config options used in building the
> official Windows release of Erlang? Or where can I go to find that?
> Maybe there is something simple that I'm missing.
>
> Here are the options I'm using:
>
>> --host=win32
>> --enable-sctp
>> --enable-smp-support
>> --enable-threads
>> --enable-builtin-zlib
>> --enable-dynamic-ssl-lib
>> --with-ssl=/c/build/openssl/release/1.1.1g
>> --disable-hipe
>> --disable-kernel-poll
>> --disable-fp-exceptions
>> --without-javac
>> --with-wxdir=/c/opt/local64/pgm/wxWidgets-3.1.3/lib/vc_x64_lib
>>
>
> Also, I must say, building on Windows seems much improved from previous
> OTP versions. The fact that Visual Studio 2019 is working is a big help.
> Many thanks to whoever did that!
>
> Thanks and best regards,
> Matt
>
> Errors when trying to start crypto:
>
>> Eshell V11.0.2  (abort with ^G)
>> 1> crypto:start().
>> =ERROR REPORT==== 8-Jun-2020::11:01:05.121000 ===
>> Unable to load crypto library. Failed with error:
>> "load_failed, Failed to load NIF library c:/Program
>> Files/erl-24.0-rc0-e/lib/crypto-4.7/priv/lib/crypto: 'The specified module
>> could not be found.'"
>> OpenSSL might not be installed on this system.
>>
>> =WARNING REPORT==== 8-Jun-2020::11:01:05.168000 ===
>> The on_load function for module crypto returned:
>> {error,{load_failed,"Failed to load NIF library c:/Program
>> Files/erl-24.0-rc0-e/lib/crypto-4.7/priv/lib/crypto: 'The specified module
>> could not be found.'"}}
>>
>> ** exception error: undefined function crypto:start/0
>>
>
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