I am using qtcreator on windows (which installs mingw32-3.4.2) and I get compile errors resembling:

Code: Select all

"/eigen2/Eigen/src/Core/util/Memory.h:62: error: `_mm_malloc' was not declared in this scope"

I have also defined EIGEN_DONT_VECTORIZE if it makes any difference. I do not care about vectorization at this point.

I would be happy with any solution even using a different IDE/compiler, although I do need to use qt4.

Thanks.

Which beta of Eigen are you using? I was believing that this problem was already fixed. Can you try beta6 or, if you use svn, just svn up.

Sidenote: gcc 3.4 doesn't give very good performance with eigen, hopefully mingw upgrades soon to gcc 4...

I must have downloaded the source package right before it was updated. Anyway, it works now! Thanks.

Great.
Here I found something that looks like a gcc 4.3 solution based on mingw:
http://www.tdragon.net/recentgcc/

Just FYI, Eigen aligns memory regardless of vectorization so you can link together vectorized and non-vectorized code. And anyway with GCC, Eigen will only vectorize if the gcc version is >= 4.2.