OpenSSL compilation errors in Windows
sfhacker at hotmail.com
Mon Sep 30 15:36:27 UTC 2019
I haven't had a chance to compile the exact OpenSSL version using g++ compiler as stated by the user/poster.
If this user is using a modified or altered version of OpenSSL provided source code, is there support available? Don't get me wrong, I don't mind helping out but .....
I'll try to compile OpenSSL source code this evening and I'll post my findings here.
From: openssl-users <openssl-users-bounces at openssl.org> on behalf of Dr. Matthias St. Pierre <Matthias.St.Pierre at ncp-e.com>
Sent: Tuesday, 1 October 2019 12:28 AM
To: Nagalakshmi V J <nagalakshmi.j at altran.com>; Michael Mueller <abaci.mjm at gmail.com>
Cc: openssl-users at openssl.org <openssl-users at openssl.org>; Umamaheswari Nagarajan <umamaheswari.nagarajan at altran.com>
Subject: AW: OpenSSL compilation errors in Windows
> OpenSSL code is compiling without any issues. When it is used from our product code and while compiling using C++ compiler, the issue is seen.
As I wrote previously, the error you posted was caused by the fact that you are compiling Ansi C (a.k.a ISO/IEC 9899:1990, a.k.a C90) source code
using a C++ compiler. While C permits a cast from ‘void *’ to ‘anytype *’, C++ doesn’t allow it without an explicit cast.
Only the *public* OpenSSL headers are guaranteed to be includable by a C++ compiler (they contain the necessary ` extern “C” ` blocks, etc.),
not the internal headers. Including *internal* headers is neither supported nor possible with a C++ compiler. And as Matt Caswell already told you,
there are no compatibility guarantees for those headers.
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