diff --git a/configure.in b/configure.in
index 1f502e026..a2f425c6e 100644
--- a/configure.in
+++ b/configure.in
@@ -316,6 +316,46 @@ AC_REPLACE_FUNCS(getenv isfdtype sigprocmask snprintf \
 
 SANE_PROTOTYPES
 
+dnl This should be replaced with AC_CHECK_LIB type macro calls
+if test "${ac_cv_header_sys_io_h}" = "yes"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inb,outb (provided by sys/io.h)" >&5
+$as_echo_n "checking for inb,outb (provided by sys/io.h)... " >&6; }
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/io.h>
+int
+main ()
+{
+inb(0);outb(0,0);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+      sane_cv_have_sys_io_h_with_inb_outb="yes"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+      sane_cv_have_sys_io_h_with_inb_outb="no"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: sys/io.h does not provide inb,outb (non i386/x32/x86_64 arch?)" >&5
+$as_echo "$as_me: WARNING: sys/io.h does not provide inb,outb (non i386/x32/x86_64 arch?)" >&2;}
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+  if test "$sane_cv_have_sys_io_h_with_inb_outb" = "yes"; then
+
+$as_echo "#define SANE_HAVE_SYS_IO_H_WITH_INB_OUTB 1" >>confdefs.h
+
+  fi
+else
+  sane_cv_have_sys_io_h_with_inb_outb="no"
+fi
+
+
+
+
 if test "$ac_cv_header_os2_h" = "yes" ; then
   AC_DEFINE(strncasecmp, strnicmp, [Define for OS/2 only])
   AC_DEFINE(strcasecmp, stricmp, [Define for OS/2 only])