Another jhbuild Error

[Onyeibo Oku <twohotis gmail com>]

After a 'wasted' 33.49MB download from git here is what I get:

Package requirements (libgtop-2.0) were not met:

No package 'libgtop-2.0' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables LIBGTOP_CFLAGS
and LIBGTOP_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
*** Error during phase configure of gnome-control-center: ########## 
Error running ./autogen.sh --prefix /home/t2hot/gnome-shell/install 
--libdir '/home/t2hot/gnome-shell/install/lib64'  --disable-static 
--disable-gtk-doc  *** [28/33]

SO, .... I can no longer build gnome-shell.  What is happening?