I’m trying to speed up my compilation:

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byu/zoharl3 from discussion
incpp

Inspired by

https://gitlab.com/libeigen/eigen/-/issues/1920

I’m trying to make this example work:

math.ixx

module; 

#define EIGEN_NO_STATIC_ASSERT
#include <Eigen/Core>

export module math;

export typedef Eigen::Matrix4d M;

main.cpp

import math;

void main() {
    //Eigen::Matrix4f m;
    M m;

    m.setZero();

    m = m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m * m;

Currently, it fails (VS22) with call_assignment_no_alias, which I probably need to export.

Any easy, elegant way to export instantiation of Eigen types?