--- memtest86+-5.01/io.h~	2013-08-10 02:01:58.000000000 +0000
+++ memtest86+-5.01/io.h	2014-01-08 01:29:12.404465515 +0000
@@ -31,7 +31,7 @@
  */
 
 #define __OUT1(s,x) \
-extern inline void __out##s(unsigned x value, unsigned short port) {
+static inline void __out##s(unsigned x value, unsigned short port) {
 
 #define __OUT2(s,s1,s2) \
 __asm__ __volatile__ ("out" #s " %" s1 "0,%" s2 "1"
@@ -43,7 +43,7 @@
 __OUT1(s##c_p,x) __OUT2(s,s1,"") : : "a" (value), "id" (port)); SLOW_DOWN_IO; }
 
 #define __IN1(s) \
-extern inline RETURN_TYPE __in##s(unsigned short port) { RETURN_TYPE _v;
+static inline RETURN_TYPE __in##s(unsigned short port) { RETURN_TYPE _v;
 
 #define __IN2(s,s1,s2) \
 __asm__ __volatile__ ("in" #s " %" s2 "1,%" s1 "0"