Re: Unable to mind .lib files after successfully compiling EPICS using mingw64

[Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>]

When you build dynamically on Windows with VS there are 2 files:

• .lib contains the symbols
• .dll contains the code

When you link, as in the Matlab Makefile, you only link with the .lib files.  It finds the .dll files at run-time.

When you build statically on Windows with VS there is only a .lib file, which contains both the symbols and the code.  It does not need to find .dll files at run-time.

I am sure pretty sure that Matlab is linking to the dynamic DLLs for ca and Com.

Mark

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From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Wang, Andrew via Tech-talk <tech-talk at aps.anl.gov>
Sent: Monday, April 28, 2025 8:01 PM
To: EPICS tech-talk <tech-talk at aps.anl.gov>
Subject: Unable to mind .lib files after successfully compiling EPICS using mingw64

 

Hi all,

 

I have been tasked with building EPICS on Windows. I was able to get it compiling using mingw64. I basically followed the instructions here (https://docs.epics-controls.org/en/latest/getting-started/installation-windows-msys2.html), albeit I did not use the tar.gz file. I instead cloned the epics-base repository.

 

I have been able to run an IOC and all of that. However, now I am trying to get mca to work, which requires com.lib and ca.lib. However, I do not see these in my lib directory. I only find com.dll.a and ca.dll.a, which to my understanding is not a static library.

 

The examples compilations in mca all use .lib. (https://github.com/epics-extensions/matlab_ca/blob/master/alt_compile/mcacompile_win64_mscc.m)

 

Please advise?

 

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