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checking for gtk+-2.0 >= 2.2.2... Requested 'gtk+-2.0 >= 2.2.2' but version of GTK+ is 2.2.1
configure: error: Library requirements (gtk+-2.0 >= 2.2.2) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.