[root@localhost sugar-jhbuild]# ./sugar-jhbuild build-base
Missing external dependencies:

automake 1.9
automake 1.7
libtool 1.5
intltoolize 0.35.0
gcc
c++
x11
libtiff
ncurses
docbook-style-xsl

Install the packages from your distribution which provides these
functionalities, including the development package for libraries.