Support for QNX 7.0 (thanks, Elad!).

Fixes Bugzilla #3686.

configure.in

@@ -2098,6 +2098,30 @@ AC_HELP_STRING([--enable-video-dummy], [use dummy video driver [[default=yes]]])
     fi
 }
 
+dnl Set up the QNX video driver if enabled
+CheckQNXVideo()
+{
+    if test x$enable_video = xyes; then
+        AC_DEFINE(SDL_VIDEO_DRIVER_QNX, 1, [ ])
+        SOURCES="$SOURCES $srcdir/src/video/qnx/*.c"
+        have_video=yes
+        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lscreen -lEGL -lGLESv2"
+        SUMMARY_video="${SUMMARY_video} qnx"
+    fi
+}
+
+dnl Set up the QNX audio driver if enabled
+CheckQNXAudio()
+{
+    if test x$enable_audio = xyes; then
+        AC_DEFINE(SDL_AUDIO_DRIVER_QSA, 1, [ ])
+        SOURCES="$SOURCES $srcdir/src/audio/qsa/*.c"
+        have_video=yes
+        EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lasound"
+        SUMMARY_audio="${SUMMARY_audio} qsa"
+    fi
+}
+
 dnl Check to see if OpenGL support is desired
 AC_ARG_ENABLE(video-opengl,
 AC_HELP_STRING([--enable-video-opengl], [include OpenGL support [[default=yes]]]),
@@ -2573,6 +2597,10 @@ AC_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [[default=yes]]])
             pthread_cflags="-D_REENTRANT"
             pthread_lib=""
             ;;
+        *-*-nto*)
+            pthread_cflags="-D_REENTRANT"
+            pthread_lib=""
+            ;;
         *)
             pthread_cflags="-D_REENTRANT"
             pthread_lib="-lpthread"
@@ -3017,7 +3045,7 @@ CheckWarnAll
 
 dnl Set up the configuration based on the host platform!
 case "$host" in
-    *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*)
+    *-*-linux*|*-*-uclinux*|*-*-gnu*|*-*-k*bsd*-gnu|*-*-bsdi*|*-*-freebsd*|*-*-dragonfly*|*-*-netbsd*|*-*-openbsd*|*-*-sysv5*|*-*-solaris*|*-*-hpux*|*-*-aix*|*-*-minix*|*-*-nto*)
         case "$host" in
             *-raspberry-linux*)
                 # Raspberry Pi
@@ -3082,6 +3110,9 @@ case "$host" in
             *-*-hpux*)          ARCH=hpux ;;
             *-*-aix*)           ARCH=aix ;;
             *-*-minix*)         ARCH=minix ;;
+            *-*-nto*)           ARCH=nto
+                CheckQNXVideo
+                ;;
         esac
         CheckVisibilityHidden
         CheckDeclarationAfterStatement
@@ -3123,6 +3154,7 @@ case "$host" in
         CheckLinuxVersion
         CheckRPATH
         CheckVivanteVideo
+
         # Set up files for the audio library
         if test x$enable_audio = xyes; then
           case $ARCH in
@@ -3147,6 +3179,9 @@ case "$host" in
                 SUMMARY_audio="${SUMMARY_audio} android"
                 have_audio=yes
             ;;
+            nto)
+                CheckQNXAudio
+            ;;
           esac
         fi
         # Set up files for the joystick library