I’m not able to compile some code which uses the Eigen3 library.

#include "eigen-3.3-beta1/Eigen/Eigen"
int main(void)
{
  Eigen::Matrix<float, 512, 512> A;
  A.fill(10.);
  return 1;
}

Seems that some headers located under “lib” in “clang” are missing:

> ecc++.exe -target aarch64-linux-eng example.cpp -o eigentest
./eigen-3.3-beta1/Eigen/Core:196:14: fatal error: ‘arm_neon.h’ file not found
#include <arm_neon.h>

(Version: ellcc-x86_64-w64-mingw32-0.1.21)

Is there a reason for this?