--- a/configure.in
+++ b/configure.in
@@ -3979,17 +3979,21 @@ else
 fi
 
 if test "$MOZ_NATIVE_JPEG" = 1; then
     AC_TRY_COMPILE([ #include <stdio.h>
                      #include <sys/types.h>
                      #include <jpeglib.h> ],
                    [ #if JPEG_LIB_VERSION < $MOZJPEG
                      #error "Insufficient JPEG library version ($MOZJPEG required)."
-                     #endif ],
+                     #endif
+                     #ifndef JCS_EXTENSIONS
+                     #error "libjpeg-turbo JCS_EXTENSIONS required"
+                     #endif
+                     ],
                    MOZ_NATIVE_JPEG=1,
                    AC_MSG_ERROR([Insufficient JPEG library version for --with-system-jpeg]))
 fi 
 CFLAGS=$_SAVE_CFLAGS
 LDFLAGS=$_SAVE_LDFLAGS
 LIBS=$_SAVE_LIBS
 
 if test -n "${JPEG_DIR}" -a -d "${JPEG_DIR}" -a "$MOZ_NATIVE_JPEG" = 1; then