--- configure.ac
+++ configure.ac
@@ -115,6 +115,10 @@
     AC_MSG_WARN([please install pkg-config; Debian package: pkg-config])
 fi
 
+dnl libXext
+PKG_CHECK_MODULES([libXext], [xext], [HAVE_LIBXEXT=1], [HAVE_LIBXEXT=0])
+AM_CONDITIONAL([HAVE_LIBXEXT], [test "$HAVE_LIBXEXT" = "1"])
+
 dnl FFmpeg
 PKG_CHECK_MODULES([libavformat], [libavformat >= 52.110.0 libavcodec libavutil], [HAVE_LIBAVFORMAT=1], [HAVE_LIBAVFORMAT=0])
 if test "$HAVE_LIBAVFORMAT" != "1"; then
@@ -326,6 +329,7 @@
 
 dnl Check if all libraries were found
 if test "$am_cv_func_iconv" != "yes" \
+    -o "$HAVE_LIBXEXT" != "1" \
     -o "$HAVE_LIBAVFORMAT" != "1" \
     -o "$HAVE_LIBAVDEVICE" != "1" \
     -o "$HAVE_LIBSWSCALE" != "1" \

--- src/Makefile.am
+++ src/Makefile.am
@@ -153,6 +153,11 @@
 bino_LDADD += $(xnvctrl_LDFLAGS) -lXNVCtrl
 endif
 
+if HAVE_LIBXEXT
+AM_CPPFLAGS += $(libXext_CFLAGS)
+bino_LDADD += $(libXext_LIBS)
+endif
+
 iconsdatadir = $(datadir)/icons/hicolor
 icons16dir = $(iconsdatadir)/16x16/apps
 icons32dir = $(iconsdatadir)/32x32/apps