diff --git a/Libtmp/Minuit/Makefile.PL b/Libtmp/Minuit/Makefile.PL
index eddf62434..cefd8af02 100644
--- a/Libtmp/Minuit/Makefile.PL
+++ b/Libtmp/Minuit/Makefile.PL
@@ -120,7 +120,7 @@ undef &MY::postamble; # suppress warning
         my $mycompiler     = $f77->compiler();
         my $mycflags       = $f77->cflags();
 	my $orig = pdlpp_postamble_int(@pack);
-	my $hack_64bit = ($Config{archname}=~m/x86_64|i686/ ?" -fPIC " : "");
+	my $hack_64bit = ($Config{archname}=~m/amd64|i686|x86_64/ ?" -fPIC " : "");
 	$orig =~ s/:\s*minuit\.pd/: minuit.pd/;
 	$orig .= "FFLAGS = $hack_64bit $mycflags \$(OPTIMIZE)\n";
 	$orig .= join "\n",map {
diff --git a/Libtmp/Slatec/Makefile.PL b/Libtmp/Slatec/Makefile.PL
index 142840b05..443d53b12 100644
--- a/Libtmp/Slatec/Makefile.PL
+++ b/Libtmp/Slatec/Makefile.PL
@@ -81,7 +81,7 @@ undef &MY::postamble; # suppress warning
         my $mycompiler     = $f77->compiler();
         my $mycflags       = $f77->cflags();
 	my $orig = pdlpp_postamble_int(@pack);
-	my $hack_64bit = $Config{archname}=~m/x86_64|i686/ ?" -fPIC " : "";
+	my $hack_64bit = $Config{archname}=~m/amd64|i686|x86_64/ ?" -fPIC " : "";
 	$orig =~ s/:\s*slatec\.pd/: slatec.pd/;
 	$orig .= "FFLAGS = $hack_64bit $mycflags \$(OPTIMIZE)\n";
 	join "\n", $orig, map "$_\$(OBJ_EXT): $_.f
diff --git a/Makefile.PL b/Makefile.PL
index a3ec1ab2f..cdabf4301 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -160,7 +160,7 @@ my @cleanup = ("pdl$Config{exe_ext}", qw(
 # use similar mods to affect CCFLAGS on other systems as needed...
 
 my $ccflags =  $Config{ccflags};
-if($Config{archname}=~m/x86_64/) {
+if($Config{archname}=~m/amd64|i686|x86_64/) {
     $ccflags .= " -fPIC";
 }