As Ralph says there can be issues mixing c++ code compiled with different windows compilers, but this often shows up at link time as the name mangling of exported library symbols
is different for visual studio and g++. With a C callable DLL interface they are often compatible and given you managed to link a mex file (and matlab does claim it supports mingw64) you may have only been missing a mingw DLL dependency. Adding C:\msys64\mingw64\bin
to your PATH for the gcc C library and its dependencies might fix it; however compiling with Visual Studio has the advantage that required DLLs are usually already present on the system.
Regards,
Freddie
From: Tech-talk <tech-talk-bounces at aps.anl.gov>
On Behalf Of Ralph Lange via Tech-talk
Sent: 29 April 2025 19:01
To: EPICS Tech Talk <tech-talk at aps.anl.gov>
Subject: Re: Unable to mind .lib files after successfully compiling EPICS using mingw64
I decided to recompile EPICS by using Strawberry Perl and Visual Studio. MATLAB CA works beautifully now.
Yes, mixing C++ code generated by the two compilers (GNU / VS) does not work. (I hope this is mentioned in the doc somewhere.)
Having some VS-based Windows libraries that need to be linked against is a very common reason to use the VS compilers.
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