diff --git a/ruby/GNUmakefile b/ruby/GNUmakefile
index e85a51701..7fca89e0f 100644
--- a/ruby/GNUmakefile
+++ b/ruby/GNUmakefile
@@ -8,19 +8,9 @@ ifeq ($(ruby),)
     ruby += audio.openal
     ruby += input.quartz #input.carbon
   else ifeq ($(platform),linux)
-    pkg_check1 = $(if $(shell test -e /usr/lib/lib$1.so && echo 1),$2)
-    pkg_check2 = $(if $(shell test -e /usr/lib/$(shell uname -m)-linux-gnu/lib$1.so && echo 1),$2)
-    pkg_check = $(call pkg_check1,$1,$2) $(call pkg_check2,$1,$2)
-    ruby += video.glx video.glx2 video.xshm
-    ruby += $(call pkg_check,Xv,video.xvideo)
-    ruby += audio.oss audio.alsa
-    ruby += $(call pkg_check,openal,audio.openal)
-    ruby += $(call pkg_check,pulse,audio.pulseaudio)
-    ruby += $(call pkg_check,pulse-simple,audio.pulseaudiosimple)
-    ruby += $(call pkg_check,ao,audio.ao)
-    ruby += input.xlib
-    ruby += $(call pkg_check,udev,input.udev)
-    ruby += $(call pkg_check,SDL2,input.sdl)
+    ruby += video.glx video.glx2 video.xshm video.xvideo
+    ruby += audio.oss audio.alsa audio.openal audio.pulseaudio audio.pulseaudiosimple audio.ao
+    ruby += input.xlib input.udev input.sdl
   else ifeq ($(platform),bsd)
     pkg_check = $(if $(shell test -e /usr/local/lib/lib$1.so && echo 1),$2)
     ruby += video.glx video.glx2 video.xshm