OpenSSL compilation errors in Windows

Nagalakshmi V J nagalakshmi.j at
Mon Sep 30 06:43:54 UTC 2019


I am using openssl 1.1.c from our product code. While compiling the code, I am getting the errors which can be suppressed as warnings using -fpermissive flag in Linux (gcc/g++). In windows, I am getting the same compilation errors in visual studio (2005). Would like to know the alternative of -fpermissive flag that can be used in visual studio to suppress the errors.

I tried adding the flags such as '/fpermissive' , '/Ze' in module properties->C/C++->command Line->Additional options. But it did not resolve the problem.

Getting the errors like below. ssl/packet_locl.h(429) : error C2440: '=' : cannot convert from 'void *' to 'unsigned char 'Conversion from 'void' to pointer to non-'void' requires an explicit cast

Since it is giving error in Openssl code, we cannot make any code changes there. Has anyone faced this kind of issue?

Please let me know how to resolve this issue.

Thanks and regards,

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