Libtool.

image/spindle/wheezy-stage4

@@ -151,6 +151,7 @@ cd /root
 git clone https://github.com/steve-m/kalibrate-rtl
 cd kalibrate-rtl
 apt-get install -y autoconf fftw3 fftw3-dev
+apt-get install -y libtool
 
 ./bootstrap
 ./configure