checking for pkg-config... /usr/bin/pkg-config
checking for gtk+-2.0 >= 1.3.7... Package gtk+-2.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `gtk+-2.0.pc' to the PKG_CONFIG_PATH environment variable No package 'gtk+-2.0' found
configure: error: Library requirements (gtk+-2.0 >= 1.3.7) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.
vamp898@vamp898-desktop:~/Desktop/mozilla$ pkg-config
Must specify package names on the command line
vamp898@vamp898-desktop:~/Desktop/mozilla$