A CEO asked question, in MDL native code via bmake make a 32 or 64 bit dll?
in fact, the question does not make sense. But it's still clear what your colleague asked for ;-)
A crucial fact is that bmake does not produce any code! All make programs (Bentley bmake, GNU make, Microsoft MsBuild etc.) only control the process how code is compiled and linked (plus possible other tasks like adding digital signature etc.). It's controlled by make file (.mke in the case of bmale, .csproj in VisualStudio C# projects...).
When talking about native C/C++ code, the application is made using Visual C compiler and linker. It's typically delivered as part of Visual Studio package. It's defined by Bentley in SDK requirements, what compiler version (Visual Studio version) has to be used for particular MicroStation version. It's because (with some simplifications) when software is compiled from C/C++ code to dll using specific compiler, to create an application for this software, the same compiler has to be used.
In Bentley world, it's:
It's up to bmake configuration (technically it's defined in mki files) to find Visual C compiler and to call it in a proper way to produce 32bit or 64bit dll.
BTW You posted your question to general Developers and Programming Forum, which is not so active. It's recommended to use product specific programming forums (when it exists), in this case MicroStation Programming forum.
You can also move existing own posts to another forum using More > Move tool available under your original post.
Bentley Accredited Developer: iTwin Platform - AssociateLabyrinth Technology | dev.notes() | cad.point
Thank you for taking the time to answer me.
Yes, yes its Visual Studio that creates the dll. And I suppose bmake never did. We just say bmake.
I wouldn't worry about me posting in an inappropriate place, I have not generally found this, that helpful, so I do not come here much and in 12 months I will never see it again.
Ta and keep well.