diff --git a/urjtag/src/tap/parport/direct.c b/urjtag/src/tap/parport/direct.c
index 10bea4d..bc3bada 100644
--- a/urjtag/src/tap/parport/direct.c
+++ b/urjtag/src/tap/parport/direct.c
@@ -37,6 +37,20 @@
 #include <urjtag/cable.h>
 #include "../parport.h"
 
+#ifdef __linux__
+#if defined(arm) || defined(__hppa__) || defined(__sparc__) || defined(__ppc__) \
+|| defined(__powerpc__) || defined(__s390__) || defined(__s390x__)\
+|| defined(__mips__) || defined(__mc68000__) || defined(__sh__)
+
+#define NO_SYSIO
+
+#define inb(addr)      (*(volatile unsigned char *)(addr))
+#define outb(b,addr)   (*(volatile unsigned char *)(addr)) = (b)
+
+#endif /* architechtures */
+#endif /* __linux__ */
+
+
 #if defined(HAVE_INPOUTXX)
 
 static HINSTANCE inpout32_dll_handle = NULL;
@@ -50,7 +64,7 @@ static outfuncPtr Out32;
 #define inb(p) (Inp32)(p)
 #define outb(d,p) (Out32)(p,d)
 
-#elif defined(HAVE_IOPERM)
+#elif defined(HAVE_IOPERM) && !defined(NO_SYSIO)
 
 #include <sys/io.h>