Clean old files at first.

diff --git a/bootstrap.sh b/bootstrap.sh
index 38e046a..688af67 100755 (executable)
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -5,6 +5,8 @@
 #   Registration Number H15PRO112
 # See the end for copying conditions.
 
+echo "Cleaning up old files..."
+rm -rf INSTALL aclocal.m4 autom4te.cache config.guess. config.sub install-sh ltmain.sh missing mkinstalldirs libtool
 echo "Running libtoolize..."
 libtoolize --automake
 echo "Running aclocal..."