Fixed bug 5346 - Add FreeBSD evdev KBIO keyboard input driver

wahil1976

This patch adds the KBIO text input driver for FreeBSD, which allows text input to fully work without text spilling out into the console. It also supports accented input, AltGr keys and Alt Lock combinations.

Tested with US accent keys layout and various AltGr layouts.

configure.ac

@@ -2643,6 +2643,28 @@ CheckInputKD()
     fi
 }
 
+
+dnl See if we can use the FreeBSD kernel kbio.h header
+CheckInputKBIO()
+{
+    AC_MSG_CHECKING(for FreeBSD kbio.h)
+    use_input_kbio=no
+    AC_TRY_COMPILE([
+      #include <sys/kbio.h>
+      #include <sys/ioctl.h>
+    ],[
+    	accentmap_t accTable;
+        ioctl(0, KDENABIO, 1);
+    ],[
+    use_input_kbio=yes
+    ])
+    AC_MSG_RESULT($use_input_kbio)
+    if test x$use_input_kbio = xyes; then
+        AC_DEFINE(SDL_INPUT_FBSDKBIO, 1, [ ])
+        SUMMARY_input="${SUMMARY_input} fbsdkbio"
+    fi
+}
+
 dnl See if the platform offers libudev for device enumeration and hotplugging.
 CheckLibUDev()
 {
@@ -3524,6 +3546,9 @@ case "$host" in
           linux)
               CheckInputKD
           ;;
+          freebsd)
+              CheckInputKBIO
+          ;;
         esac
         CheckTslib
         CheckUSBHID
@@ -3660,6 +3685,7 @@ case "$host" in
         if test x$use_input_events = xyes; then
             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev.c"
             SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev_kbd.c"
+            SOURCES="$SOURCES $srcdir/src/core/freebsd/SDL_evdev_kbd_freebsd.c"
         fi       
         # Set up other core UNIX files
         SOURCES="$SOURCES $srcdir/src/core/linux/SDL_evdev_capabilities.c"