I get an error when I run ./configure:
I went into Synaptics and searched for GTK - I can't tell which one I need to install because there are so many options.
checking for GTK... configure: error: Package requirements (gtk+-2.0 >= 2.4.0) were not met:
No package 'gtk+-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 GTK_CFLAGS
and GTK_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.