diff --git a/configure.ac b/configure.ac
index d1e36eb3..08409fe5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -894,7 +894,7 @@ CheckDRM()
     enable_video_drm=$enableval)
     if test "x$enable_video_drm" = "xyes"; then
         PKG_CHECK_MODULES(DRM, [libudev >= 200, libdrm >= 2.4], video_drm="yes",
-            video_drm="no; Linux DRM NEWGAL engine requires libdrm and libudev")
+            video_drm="no; Linux DRM NEWGAL engine requires libdrm 2.4+ and libudev 200+")
         if test "x$video_drm" = "xyes"; then
             AC_DEFINE(_MGGAL_DRM, 1,
                 [Define if include Linux DRM NEWGAL engine])
@@ -1918,12 +1918,13 @@ if test "x$build_tslib_ial_engine" = "xyes"; then
 fi
 
 if test "x$build_libinput_ial_engine" = "xyes"; then
-    PKG_CHECK_MODULES(LIBINPUT, [libinput >= 1.10.0], ,
-            build_libinput_ial_engine="no; the IAL engine requires libinput 1.13.0 or later")
+    PKG_CHECK_MODULES(LIBINPUT, [libudev >= 200, libinput >= 1.10.0], ,
+            build_libinput_ial_engine="no; Libinput IAL engine requires libinput 1.13.0+ and libudev 200+")
     if test "x$build_libinput_ial_engine" = "xyes"; then
         AC_DEFINE(_MGIAL_LIBINPUT, 1,
                 [Define if include Linux libinput IAL engine])
         need_udev="yes"
+        DEP_LIBS="$DEP_LIBS -linput"
     else
         AC_MSG_WARN([$build_libinput_ial_engine])
     fi
diff --git a/src/ial/Makefile.am b/src/ial/Makefile.am
index 49cff7ec..da1df749 100644
--- a/src/ial/Makefile.am
+++ b/src/ial/Makefile.am
@@ -49,7 +49,7 @@ MSTAR_SRCS = mstarial.h mstarial.c
 DFB_SRCS = dfb.h dfb.c
 
 USVFB_SRCS = usvfbinput.c usvfbinput.h
-LIBINPUT_SRCS = libinput.c libinput.h
+LIBINPUT_SRCS = ial-libinput.c ial-libinput.h
 
 if MGIAL_CONSOLE
 native_libial_la_LIBADD = native/libnative.la
diff --git a/src/ial/libinput.c b/src/ial/ial-libinput.c
similarity index 95%
rename from src/ial/libinput.c
rename to src/ial/ial-libinput.c
index 8783cadf..a17f8128 100644
--- a/src/ial/libinput.c
+++ b/src/ial/ial-libinput.c
@@ -32,7 +32,7 @@
  *   <http://www.minigui.com/en/about/licensing-policy/>.
  */
 /*
-** libinput.c: The implementation of the IAL engine based on libinput.
+** ial-libinput.c: The implementation of the IAL engine based on libinput.
 **
 ** Created by Wei Yongming, 2019/06/10
 */
@@ -45,9 +45,12 @@
 
 #ifdef _MGIAL_LIBINPUT
 
+#include <libudev.h>
+#include <libinput.h>
+
 #include "misc.h"
 #include "ial.h"
-#include "libinput.h"
+#include "ial-libinput.h"
 
 static int mouse_x, mouse_y, mouse_button;
 
diff --git a/src/ial/libinput.h b/src/ial/ial-libinput.h
similarity index 100%
rename from src/ial/libinput.h
rename to src/ial/ial-libinput.h
diff --git a/src/ial/ial.c b/src/ial/ial.c
index 63bd4ae0..104dfbd6 100644
--- a/src/ial/ial.c
+++ b/src/ial/ial.c
@@ -1,33 +1,33 @@
 /*
- *   This file is part of MiniGUI, a mature cross-platform windowing 
+ *   This file is part of MiniGUI, a mature cross-platform windowing
  *   and Graphics User Interface (GUI) support system for embedded systems
  *   and smart IoT devices.
- * 
+ *
  *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
  *   Copyright (C) 1998~2002, WEI Yongming
- * 
+ *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
  *   the Free Software Foundation, either version 3 of the License, or
  *   (at your option) any later version.
- * 
+ *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *   GNU General Public License for more details.
- * 
+ *
  *   You should have received a copy of the GNU General Public License
  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
- * 
+ *
  *   Or,
- * 
+ *
  *   As this program is a library, any link to this program must follow
  *   GNU General Public License version 3 (GPLv3). If you cannot accept
  *   GPLv3, you need to be licensed from FMSoft.
- * 
+ *
  *   If you have got a commercial license of this program, please use it
  *   under the terms and conditions of the commercial license.
- * 
+ *
  *   For more information about the commercial license, please refer to
  *   <http://www.minigui.com/en/about/licensing-policy/>.
  */
@@ -118,13 +118,13 @@
     #include "usvfbinput.h"
 #endif
 #ifdef _MGIAL_LIBINPUT
-    #include "libinput.h"
+    #include "ial-libinput.h"
 #endif
 
 #define LEN_ENGINE_NAME        16
 #define LEN_MTYPE_NAME         16
 
-static INPUT inputs [] = 
+static INPUT inputs [] =
 {
 /* General IAL engines ... */
 #ifdef _MGIAL_QVFB
@@ -313,7 +313,7 @@ void GUIAPI GetOriginalMousePosition (int* x, int* y)
 #define LSHIFT(x)       ((x)<<10)
 #define RSHIFT(x)       ((x)>>12)
 
-static int vars1 [NR_EQUATIONS], vars2 [NR_EQUATIONS], 
+static int vars1 [NR_EQUATIONS], vars2 [NR_EQUATIONS],
            vars3 [NR_EQUATIONS], vars4 [NR_EQUATIONS];
 
 static void do_mouse_calibrate (int* x, int* y)
@@ -336,7 +336,7 @@ static void do_mouse_calibrate (int* x, int* y)
     *y = RSHIFT (y1 + y2 + y3 + y4);
 }
 
-static BOOL 
+static BOOL
 doGaussianElimination (int* x, const POINT* src_pts, const POINT* dst_pts)
 {
     int x12, x23, y12, y23, nx12, nx23, ny12, ny23;
@@ -365,7 +365,7 @@ doGaussianElimination (int* x, const POINT* src_pts, const POINT* dst_pts)
     numerator = nx12*x23 - nx23*x12;
     x [1] = LSHIFT (numerator) / denominator2;
     x [2] = LSHIFT (dst_pts [0].x) - x [0] * src_pts [0].x - x [1] * src_pts [0].y;
-    
+
     numerator = ny12*y23 - ny23*y12;
     x [3] = LSHIFT (numerator) / denominator1;
     numerator = ny12*x23 - ny23*x12;
@@ -375,7 +375,7 @@ doGaussianElimination (int* x, const POINT* src_pts, const POINT* dst_pts)
     return TRUE;
 }
 
-BOOL GUIAPI 
+BOOL GUIAPI
 SetMouseCalibrationParameters (const POINT* src_pts, const POINT* dst_pts)
 {
     POINT my_src_pts [3];