Why 'make gconfig' does not work while compiling the kernel?

Solution 1:

The message is very clear:

* Unable to find the GTK+ installation. Please make sure that
* the GTK+ 2.0 development package is correctly installed...
* You need gtk+-2.0, glib-2.0 and libglade-2.0.
*

So, just install the libraries you need. In most cases, these are provided by the -dev version of the packages mentioned in the error, in the case of libraries is likely that you have to add lib at the start. So, in this case:

sudo apt-get install libgtk2.0-dev libglib2.0-dev libglade2-dev

And done.