checking for GTK... Requested 'gtk+-2.0 >= 2.6.0' but version of GTK+ is 2.4.0
configure: error: Package requirements (gtk+-2.0 >= 2.6.0) were not met.
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
Alternatively you may set the GTK_CFLAGS and GTK_LIBS environment variables
to avoid the need to call pkg-config. See the pkg-config man page for
more details.