open X, ">obj/config.mk" or Fail $!;
print X "# Generated automatically by $0, please don't touch manually.\n";
foreach my $x (sort keys %vars) {
print X "$x=$vars{$x}\n";
}
open X, ">obj/config.mk" or Fail $!;
print X "# Generated automatically by $0, please don't touch manually.\n";
foreach my $x (sort keys %vars) {
print X "$x=$vars{$x}\n";
}