$ cat eigen_hello_world.cpp 
#include <iostream>
#include <Eigen/Dense>
using Eigen::MatrixXd;
int main()
{
  MatrixXd m(2,2);
  m(0,0) = 3;
  m(1,0) = 2.5;
  m(0,1) = -1;
  m(1,1) = m(1,0) + m(0,1);
  std::cout << m << std::endl;
}
$ g++ -O3 -march=skylake-avx512 -I/usr/include/eigen3 eigen_hello_world.cpp -o eigen_hello_world
$ ./eigen_hello_world 
  3  -1
2.5 1.5
$ g++ -O3 -DEIGEN_ENABLE_AVX512 -march=skylake-avx512 -I/usr/include/eigen3 eigen_hello_world.cpp -o eigen_hello_world
In file included from /usr/include/eigen3/Eigen/Core:379,
                 from /usr/include/eigen3/Eigen/Dense:1,
                 from eigen_hello_world.cpp:2:
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h: In function ‘Packet Eigen::internal::preduxp(const Packet*) [with Packet = __vector(16) float]’:
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:731:26: error: ‘vecs0_1’ was not declared in this scope; did you mean ‘vecs0_0’?
  731 |   hsum1 = _mm256_hadd_ps(vecs0_1, vecs1_1);
      |                          ^~~~~~~
      |                          vecs0_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:731:35: error: ‘vecs1_1’ was not declared in this scope; did you mean ‘vecs1_0’?
  731 |   hsum1 = _mm256_hadd_ps(vecs0_1, vecs1_1);
      |                                   ^~~~~~~
      |                                   vecs1_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:732:26: error: ‘vecs2_1’ was not declared in this scope; did you mean ‘vecs2_0’?
  732 |   hsum2 = _mm256_hadd_ps(vecs2_1, vecs3_1);
      |                          ^~~~~~~
      |                          vecs2_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:732:35: error: ‘vecs3_1’ was not declared in this scope; did you mean ‘vecs3_0’?
  732 |   hsum2 = _mm256_hadd_ps(vecs2_1, vecs3_1);
      |                                   ^~~~~~~
      |                                   vecs3_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:733:26: error: ‘vecs4_1’ was not declared in this scope; did you mean ‘vecs4_0’?
  733 |   hsum3 = _mm256_hadd_ps(vecs4_1, vecs5_1);
      |                          ^~~~~~~
      |                          vecs4_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:733:35: error: ‘vecs5_1’ was not declared in this scope; did you mean ‘vecs5_0’?
  733 |   hsum3 = _mm256_hadd_ps(vecs4_1, vecs5_1);
      |                                   ^~~~~~~
      |                                   vecs5_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:734:26: error: ‘vecs6_1’ was not declared in this scope; did you mean ‘vecs6_0’?
  734 |   hsum4 = _mm256_hadd_ps(vecs6_1, vecs7_1);
      |                          ^~~~~~~
      |                          vecs6_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:734:35: error: ‘vecs7_1’ was not declared in this scope; did you mean ‘vecs7_0’?
  734 |   hsum4 = _mm256_hadd_ps(vecs6_1, vecs7_1);
      |                                   ^~~~~~~
      |                                   vecs7_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:781:26: error: ‘vecs8_1’ was not declared in this scope; did you mean ‘vecs8_0’?
  781 |   hsum1 = _mm256_hadd_ps(vecs8_1, vecs9_1);
      |                          ^~~~~~~
      |                          vecs8_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:781:35: error: ‘vecs9_1’ was not declared in this scope; did you mean ‘vecs9_0’?
  781 |   hsum1 = _mm256_hadd_ps(vecs8_1, vecs9_1);
      |                                   ^~~~~~~
      |                                   vecs9_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:782:26: error: ‘vecs10_1’ was not declared in this scope; did you mean ‘vecs10_0’?
  782 |   hsum2 = _mm256_hadd_ps(vecs10_1, vecs11_1);
      |                          ^~~~~~~~
      |                          vecs10_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:782:36: error: ‘vecs11_1’ was not declared in this scope; did you mean ‘vecs11_0’?
  782 |   hsum2 = _mm256_hadd_ps(vecs10_1, vecs11_1);
      |                                    ^~~~~~~~
      |                                    vecs11_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:783:26: error: ‘vecs12_1’ was not declared in this scope; did you mean ‘vecs12_0’?
  783 |   hsum3 = _mm256_hadd_ps(vecs12_1, vecs13_1);
      |                          ^~~~~~~~
      |                          vecs12_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:783:36: error: ‘vecs13_1’ was not declared in this scope; did you mean ‘vecs13_0’?
  783 |   hsum3 = _mm256_hadd_ps(vecs12_1, vecs13_1);
      |                                    ^~~~~~~~
      |                                    vecs13_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:784:26: error: ‘vecs14_1’ was not declared in this scope; did you mean ‘vecs14_0’?
  784 |   hsum4 = _mm256_hadd_ps(vecs14_1, vecs15_1);
      |                          ^~~~~~~~
      |                          vecs14_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:784:36: error: ‘vecs15_1’ was not declared in this scope; did you mean ‘vecs15_0’?
  784 |   hsum4 = _mm256_hadd_ps(vecs14_1, vecs15_1);
      |                                    ^~~~~~~~
      |                                    vecs15_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h: In function ‘void Eigen::internal::ptranspose(Eigen::internal::PacketBlock<__vector(16) float, 16>&)’:
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1111:42: error: ‘S0_1’ was not declared in this scope; did you mean ‘S0_0’?
 1111 |   tmp.packet[8] = _mm256_permute2f128_ps(S0_1, S4_1, 0x20);
      |                                          ^~~~
      |                                          S0_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1111:48: error: ‘S4_1’ was not declared in this scope; did you mean ‘S4_0’?
 1111 |   tmp.packet[8] = _mm256_permute2f128_ps(S0_1, S4_1, 0x20);
      |                                                ^~~~
      |                                                S4_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1112:42: error: ‘S1_1’ was not declared in this scope; did you mean ‘S1_0’?
 1112 |   tmp.packet[9] = _mm256_permute2f128_ps(S1_1, S5_1, 0x20);
      |                                          ^~~~
      |                                          S1_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1112:48: error: ‘S5_1’ was not declared in this scope; did you mean ‘S5_0’?
 1112 |   tmp.packet[9] = _mm256_permute2f128_ps(S1_1, S5_1, 0x20);
      |                                                ^~~~
      |                                                S5_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1113:43: error: ‘S2_1’ was not declared in this scope; did you mean ‘S2_0’?
 1113 |   tmp.packet[10] = _mm256_permute2f128_ps(S2_1, S6_1, 0x20);
      |                                           ^~~~
      |                                           S2_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1113:49: error: ‘S6_1’ was not declared in this scope; did you mean ‘S6_0’?
 1113 |   tmp.packet[10] = _mm256_permute2f128_ps(S2_1, S6_1, 0x20);
      |                                                 ^~~~
      |                                                 S6_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1114:43: error: ‘S3_1’ was not declared in this scope; did you mean ‘S3_0’?
 1114 |   tmp.packet[11] = _mm256_permute2f128_ps(S3_1, S7_1, 0x20);
      |                                           ^~~~
      |                                           S3_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1114:49: error: ‘S7_1’ was not declared in this scope; did you mean ‘S7_0’?
 1114 |   tmp.packet[11] = _mm256_permute2f128_ps(S3_1, S7_1, 0x20);
      |                                                 ^~~~
      |                                                 S7_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1130:43: error: ‘S8_1’ was not declared in this scope; did you mean ‘S8_0’?
 1130 |   tmp.packet[24] = _mm256_permute2f128_ps(S8_1, S12_1, 0x20);
      |                                           ^~~~
      |                                           S8_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1130:49: error: ‘S12_1’ was not declared in this scope; did you mean ‘S12_0’?
 1130 |   tmp.packet[24] = _mm256_permute2f128_ps(S8_1, S12_1, 0x20);
      |                                                 ^~~~~
      |                                                 S12_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1131:43: error: ‘S9_1’ was not declared in this scope; did you mean ‘S9_0’?
 1131 |   tmp.packet[25] = _mm256_permute2f128_ps(S9_1, S13_1, 0x20);
      |                                           ^~~~
      |                                           S9_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1131:49: error: ‘S13_1’ was not declared in this scope; did you mean ‘S13_0’?
 1131 |   tmp.packet[25] = _mm256_permute2f128_ps(S9_1, S13_1, 0x20);
      |                                                 ^~~~~
      |                                                 S13_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1132:43: error: ‘S10_1’ was not declared in this scope; did you mean ‘S10_0’?
 1132 |   tmp.packet[26] = _mm256_permute2f128_ps(S10_1, S14_1, 0x20);
      |                                           ^~~~~
      |                                           S10_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1132:50: error: ‘S14_1’ was not declared in this scope; did you mean ‘S14_0’?
 1132 |   tmp.packet[26] = _mm256_permute2f128_ps(S10_1, S14_1, 0x20);
      |                                                  ^~~~~
      |                                                  S14_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1133:43: error: ‘S11_1’ was not declared in this scope; did you mean ‘S11_0’?
 1133 |   tmp.packet[27] = _mm256_permute2f128_ps(S11_1, S15_1, 0x20);
      |                                           ^~~~~
      |                                           S11_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1133:50: error: ‘S15_1’ was not declared in this scope; did you mean ‘S15_0’?
 1133 |   tmp.packet[27] = _mm256_permute2f128_ps(S11_1, S15_1, 0x20);
      |                                                  ^~~~~
      |                                                  S15_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h: In function ‘void Eigen::internal::ptranspose(Eigen::internal::PacketBlock<__vector(16) float, 4>&)’:
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: error: expected ‘,’ or ‘;’ before ‘__m256’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: in definition of macro ‘EIGEN_EXTRACT_8f_FROM_16f’
  663 |   __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
      |                                                        ^~~~~~
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1187:42: error: ‘S0_1’ was not declared in this scope; did you mean ‘S0_0’?
 1187 |   tmp.packet[4] = _mm256_permute2f128_ps(S0_1, S1_1, 0x20);
      |                                          ^~~~
      |                                          S0_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1187:48: error: ‘S1_1’ was not declared in this scope; did you mean ‘S1_0’?
 1187 |   tmp.packet[4] = _mm256_permute2f128_ps(S0_1, S1_1, 0x20);
      |                                                ^~~~
      |                                                S1_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1188:42: error: ‘S2_1’ was not declared in this scope; did you mean ‘S2_0’?
 1188 |   tmp.packet[5] = _mm256_permute2f128_ps(S2_1, S3_1, 0x20);
      |                                          ^~~~
      |                                          S2_0
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1188:48: error: ‘S3_1’ was not declared in this scope; did you mean ‘S3_0’?
 1188 |   tmp.packet[5] = _mm256_permute2f128_ps(S2_1, S3_1, 0x20);
      |                                                ^~~~
      |                                                S3_0
$ clang++ -O3 -DEIGEN_ENABLE_AVX512 -march=skylake-avx512 -I/usr/include/eigen3 eigen_hello_world.cpp -o eigen_hello_world
In file included from eigen_hello_world.cpp:2:
In file included from /usr/include/eigen3/Eigen/Dense:1:
In file included from /usr/include/eigen3/Eigen/Core:379:
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:689:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[0], vecs0);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:690:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[1], vecs1);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:691:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[2], vecs2);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:692:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[3], vecs3);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:693:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[4], vecs4);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:694:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[5], vecs5);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:695:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[6], vecs6);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:696:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[7], vecs7);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:697:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[8], vecs8);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:698:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[9], vecs9);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:699:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[10], vecs10);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:700:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[11], vecs11);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:701:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[12], vecs12);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:702:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[13], vecs13);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:703:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[14], vecs14);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:704:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(vecs[15], vecs15);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1083:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(S0, S0);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1084:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(S1, S1);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:1085:3: error: expected ';' at end of declaration
  EIGEN_EXTRACT_8f_FROM_16f(S2, S2);
  ^
/usr/include/eigen3/Eigen/src/Core/arch/AVX512/PacketMath.h:663:56: note: expanded from macro 'EIGEN_EXTRACT_8f_FROM_16f'
  __m256 OUTPUT##_0 = _mm512_extractf32x8_ps(INPUT, 0) __m256 OUTPUT##_1 = \
                                                       ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.