I have tried redownloading the GLIB archive, uninstalling and reinstalling it, and searching my drive for any files that appear related to GLib and deleting them (probably breaking stuff in the process). I certainly never deliberately installed it. I have no idea how this 2.26.1 installation got there or how to remove it.

It appears that even though I installed the latest version of GLib, traces of some older version (which was apparently not installed before) remain on my machine and are confusing the GTK installer. *** to point to the correct configuration files *** If pkg-config was wrong, set the environment variable PKG_CONFIG_PATH Make sure you have run ldconfig if that is *** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing *** was found! If pkg-config was correct, then it is best I installed this, however, when I again tried to install GTK I got an error message like this: *** 'pkg-config -modversion glib-2.0' returned 2.28.7, but GLIB (2.26.1) The first time I tried to do the usual configure-make-make install set of commands for it, it said I was missing the cairo dependency. I am trying to install GTK as a dependency of a dependency of Audacity.