diff --git a/luprex/Makefile b/luprex/Makefile
index d4b6a591..c70b6214 100644
--- a/luprex/Makefile
+++ b/luprex/Makefile
@@ -1,21 +1,23 @@
 
 ifneq "" "$(findstring -linux-,$(MAKE_HOST))"
+  OS=linux
   EXE=main
-  LIBS=-L./ext/openssl-linux -lssl -lcrypto
+  LIBS=-L./ext/openssl-linux -lssl -lcrypto -ldl
   LUAFLAGS=-DLUA_USE_APICHECK -DLUA_USE_POSIX
   OPT=-g -O0
-  DRIVER=driver-linux
 else ifneq "" "$(findstring cmd.exe,$(COMSPEC))"
+  OS=mingw
   EXE=main.exe
   LIBS=-L./ext/openssl-mingw -lssl -lcrypto -lws2_32 -lcrypt32 -lcryptui
   LUAFLAGS=-DLUA_USE_APICHECK -DLUA_COMPAT_ALL
   OPT=-g -O0
-  DRIVER=driver-mingw
 else
   $(error Cannot figure out whether to build the linux or mingw version)
 endif
 
 
+$(info Building for $(OS)...)
+
 OBJ_ERIS=\
 	obj/eris/lapi.o \
 	obj/eris/lcode.o \
@@ -89,7 +91,7 @@ OBJ_CORE=\
 OBJ_DRV=\
 	obj/drv/drvutil.o\
 	obj/drv/sslutil.o\
-	obj/drv/$(DRIVER).o
+	obj/drv/driver-$(OS).o