Fix configure script

configure.ac

@@ -852,6 +852,8 @@ if test x"${need_avx512}" = x"yes"; then
   fi
   AC_DEFINE([HAVE_AVX512],[1],[AVX512 is supported on this CPU])
 
+  echo "AVX512 allgemein " $can_compile_avx512
+
   if test x"$can_compile_avx512" = x"yes"; then
     AC_MSG_CHECKING([whether we compile for Xeon PHI or Xeon])
     AC_COMPILE_IFELSE([AC_LANG_SOURCE([
@@ -872,6 +874,7 @@ if test x"${need_avx512}" = x"yes"; then
      int main(int argc, char **argv){
      __m512d sign;
      __m512d h1;
+     __m512d h2_real;
 
      __m512d x1 = (__m512d) _mm512_xor_epi64((__m512i) h2_real, (__m512i) sign);
      return 0;
@@ -880,6 +883,8 @@ if test x"${need_avx512}" = x"yes"; then
      [can_compile_avx512_xeon_phi=yes],
      [can_compile_avx512_xeon_phi=no]
     )
+    echo $can_compile_avx512_xeon
+    echo $can_compile_avx512_xeon_phi
     if test x"$can_compile_avx512_xeon" = x"yes"; then
       AC_DEFINE([HAVE_AVX512_XEON],[1],[AVX512 for Xeon is supported on this CPU])
     else