VTE 0.30 breaks API and ABI from ealier versions. This chapter details the changes you need to make to your programme to adapt.
VTE now requires GTK+ 3.0; GTK+ 2.0 is no longer supported.
The VTE pkg-config file was renamed to vte-2.92.pc. Use
vte-2.92.pc
PKG_CHECK_MODULES([VTE],[vte-2.92 >= 0.30])
in configure.ac.
configure.ac