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Dear all TRNSYS users,
Hi,
I've written a Fortran90 code to generate a new TRNSYS component. I incorporated the 'ddtsvb' routine from the LAPACK library in my code.
Nevertheless, during compilation, I'm facing an error message: "Undefined reference to 'ddtsvb'." I'm unsure about the steps required to resolve this issue.
I would greatly appreciate any assistance anyone could offer regarding this matter.
Warm regards,
Ali
@alish Are you using TypeStudio to compile your new Type? TypeStudio struggles with incorporating libraries (really anything that isn't a .f90 file) into its compilation.
If you're not already, I would recommend using a Fortran compiler within an integrated development environment (IDE) such as Microsoft Visual Studio to compile the code to include the LAPACK library. Visual Studio does not come with the TRNSYS package, but it is free to download and is the IDE we use to compile and debug TRNSYS projects. Some hints and tips are given in the ProgrammersGuide.pdf in the Documentation folder of your main TRNSYS18 directory. You can either compile your Type as a standalone .dll (ie MyType.dll), or you can compile your Type within the main TRNDll64.dll - sometimes the latter is more useful than the former. This YouTube video walks through how to compile your Type as part of the main TRNDll64.dll (skip ahead about 2 min): https://youtu.be/fZ5-zSC094Q .
I haven't had occasion yet to incorporate a LAPACK routine into a TRNSYS type - I've played around with them in other projects, but not TRNSYS projects. I may have to find an excuse to do so, just to see if I run into any issues through Visual Studio 🙂
