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  $try_aes_ni = 1 if $Config{archname} =~ /i86pc-solaris(-.+)?-64/; # i86pc-solaris-thread-multi-64 / i86pc-solaris-64
  if ($try_aes_ni && $Config{gccversion}) {
    my $ver1;
    $ver1 ||= $1 if $Config{gccversion} =~ /^([0-9]+)\./; # gccversion='10.2.0'
    $ver1 ||= $1 if $Config{gccversion} =~ /LLVM ([0-9]+)\./i; # gccversion='Apple LLVM 14.0.0 (clang-1400.0.29.202)'
    $ver1 ||= $1 if $Config{gccversion} =~ /Clang ([0-9]+)\./i; # gccversion='FreeBSD Clang 13.0.0 (git@github.com:llvm/llvm-project.git llvmorg-13.0.0-0-gd7b669b3a303)' or 'OpenBSD Clang 13.0.0'
    $mycflags .= " -msse4.1 -maes" if $ver1 > 4; # supported since gcc-4.4
  }

  #FIX: this is particularly useful for Debian https://github.com/DCIT/perl-CryptX/pull/39
  $mycflags .= " $ENV{CFLAGS} "   if $ENV{CFLAGS};
  $mycflags .= " $ENV{CPPFLAGS} " if $ENV{CPPFLAGS};

  #### remove all lto hacks - https://github.com/DCIT/perl-CryptX/issues/70
  ## #FIX: gcc with -flto is a trouble maker see https://github.com/DCIT/perl-CryptX/issues/32
  ## #FIX: another issue with "-flto=auto" see https://github.com/DCIT/perl-CryptX/pull/66
  ## $mycflags =~ s/\s-flto\S+\s/ /g; # -flto -flto=auto -flto=jobserver -flto=N ...

  #FIX: avoid -Wwrite-strings -Wcast-qual -pedantic -pedantic-errors -ansi -std=c89
  $mycflags =~ s/\s-pedantic-errors\s/ /g;
  $mycflags =~ s/\s-pedantic\s/ /g;
  $mycflags =~ s/\s-std=c89\s/ /g;