diff --git a/Makefile.pl b/Makefile.pl
index 443634c..fc32d9a 100755
--- a/Makefile.pl
+++ b/Makefile.pl
@@ -11,16 +11,16 @@ foreach my $l (@ARGV) {
     }
 }
 
-our $prefix  = "/usr/local";
-our $cc      = defined($ENV{CC}) ? $ENV{CC} : "*host*gcc";
-our $ar      = defined($ENV{AR}) ? $ENV{AR} : "*host*ar";
-our $incdir  = "-I include";
-our $cflags  = "-fPIC -D_MILSKO";
-our $libdir  = "";
-our $ldflags = "";
-our $math    = "-lm";
-our $shared  = "-shared";
-our $backend = "";
+our $prefix   = "/usr/local";
+our $cc       = defined($ENV{CC}) ? $ENV{CC} : "*host*gcc";
+our $ar       = defined($ENV{AR}) ? $ENV{AR} : "*host*ar";
+our $incdir   = "-I include";
+our $cflags   = "-fPIC -D_MILSKO";
+our $libdir   = "";
+our $ldflags  = "";
+our $math     = "-lm";
+our $shared   = "-shared";
+our @backends = ();
 
 our $library_prefix    = "lib";
 our $library_suffix    = ".so";
diff --git a/pl/ostype/Darwin.pl b/pl/ostype/Darwin.pl
deleted file mode 100644
index c51b686..0000000
--- a/pl/ostype/Darwin.pl
+++ /dev/null
@@ -1,5 +0,0 @@
-# $Id$
-$shared = "-dynamiclib";
-use_backend("darwin");
-
-1;
diff --git a/pl/rules.pl b/pl/rules.pl
index acf6a2d..53264a0 100644
--- a/pl/rules.pl
+++ b/pl/rules.pl
@@ -6,7 +6,7 @@ my $gl_libs = "";
 if (param_get("classic-theme")) {
     add_cflags("-DUSE_CLASSIC_THEME");
 }
-if ($backend eq "x11") {
+if (grep(@backends, /^x11$/)) {
     add_cflags("-DUSE_X11");
     new_object("src/backend/x11.c");
     add_libs("-lX11");
@@ -18,7 +18,8 @@ if ($backend eq "x11") {
         add_libs("-lXrender");
     }
 }
-elsif ($backend eq "gdi") {
+
+if (grep(@backends, /^gdi$/)) {
     add_cflags("-DUSE_GDI");
     new_object("src/backend/gdi.c");
     add_libs("-lgdi32");
diff --git a/pl/utils.pl b/pl/utils.pl
index 236d544..218f505 100644
--- a/pl/utils.pl
+++ b/pl/utils.pl
@@ -50,7 +50,9 @@ sub new_object {
 }
 
 sub use_backend {
-    $backend = $_[0];
+    foreach my $l (@_) {
+        push(@backends, $l);
+    }
 }
 
 our %params = ();