diff --git a/01_build_src.sh b/01_build_src.sh
index 1372daf..eabd57a 100755
--- a/01_build_src.sh
+++ b/01_build_src.sh
@@ -1,5 +1,13 @@
 #!/bin/sh
 
+if [ -f "/usr/bin/apt" ]; then
+  apt -y install gcc g++ make gawk bison libelf-dev bridge-utils
+fi
+
+if [ -f "/usr/bin/yum" ]; then
+  yum -y install gcc gcc-c++ make gawk bison elfutils-libelf bridge-utils
+fi
+
 #-----------------------------------------------
 #
 # 导入公共变量
diff --git a/mk_xfce.sh b/mk_xfce.sh
index 98e3117..688d84b 100755
--- a/mk_xfce.sh
+++ b/mk_xfce.sh
@@ -917,6 +917,7 @@ if [ "${with_xfce_test}" = true ]; then
   # 4. 在 ssh 的终端里
   #    export DISPLAY=:10
   #    LD_LIBRARY_PATH="${libpath}:${libjpegdir}" xfce4-session 
+  # 5. 这样虚拟机里面就会出现真正的窗口系统
 
 fi