Hi Sergio, We are using OpenSSL APIs in our product code. We are not making any changes in OpenSSL. Our product code is a C++ code and it makes use of openSSL APIs for some functionality.
This compilation error we are getting in Linux and windows platforms. But in Linux, we have a '-fpermissive' flag which is suppressing those errors as warnings and so compilation is getting successful. The issue here is in Windows , we are not able to find alternative flag for -'fpermissive' in Visual studio and due to that compilation is unsuccessful. It would be helpful if anyone suggests some option to get the compilation successful. Thanks and regards, Nagalakshmi From: Sergio NNX <sfhac...@hotmail.com> Sent: Monday, September 30, 2019 9:06 PM To: Dr. Matthias St. Pierre <matthias.st.pie...@ncp-e.com>; Nagalakshmi V J <nagalakshm...@altran.com>; Michael Mueller <abaci....@gmail.com> Cc: openssl-users@openssl.org; Umamaheswari Nagarajan <umamaheswari.nagara...@altran.com> Subject: Re: OpenSSL compilation errors in Windows ** This mail has been sent from an external source ** Ciao. 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. Regards. Sergio. ________________________________ From: openssl-users <openssl-users-boun...@openssl.org<mailto:openssl-users-boun...@openssl.org>> on behalf of Dr. Matthias St. Pierre <matthias.st.pie...@ncp-e.com<mailto:matthias.st.pie...@ncp-e.com>> Sent: Tuesday, 1 October 2019 12:28 AM To: Nagalakshmi V J <nagalakshm...@altran.com<mailto:nagalakshm...@altran.com>>; Michael Mueller <abaci....@gmail.com<mailto:abaci....@gmail.com>> Cc: openssl-users@openssl.org<mailto:openssl-users@openssl.org> <openssl-users@openssl.org<mailto:openssl-users@openssl.org>>; Umamaheswari Nagarajan <umamaheswari.nagara...@altran.com<mailto:umamaheswari.nagara...@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. Matthias ===================================================== Please refer to https://northamerica.altran.com/email-disclaimer for important disclosures regarding this electronic communication. =====================================================
