Hi,

We are just creating Eigen builds for conda-forge (for use in the Python ecyosystem). We are creating automated builds and I was wondering - since Eigen is header only - does it matter which compiler is used to create the installed headers? For example, on Windows in particular, do we need to create builds using VS 2009, VS 2010 and VS 2015 (for each Python version) - or do we just need to create one build and it just actually matters that when a codebase depends on Eigen then the compiler comes in to play? Or does the Eigen CMake actually set some defines depending on the compiler at installation of the headers?

Thanks a lot,

Patrick

For the record, I copy the answer I gave on the ML:

There is no configuration step, everything is adjusted from system/compiler predefined macros. So the only difference between the source Eigen folder and the cmake installed one is that there is no CMakeLists.txt files in the installed version.