LinuxQuestions.org - Installing xMule

I tried to install xMule and this is what it said

Code:

checking for GTK+ version...

checking for gtk-config... no

checking for GTK - version >= 1.2.7... no

*** The gtk-config script installed by GTK could not be found

*** If GTK was installed in PREFIX, make sure PREFIX/bin is in

*** your path, or set the GTK_CONFIG environment variable to the

*** full path to gtk-config.

checking for gtk-config... (cached) no

checking for GTK - version >= 1.2.3... no

*** The gtk-config script installed by GTK could not be found

*** If GTK was installed in PREFIX, make sure PREFIX/bin is in

*** your path, or set the GTK_CONFIG environment variable to the

*** full path to gtk-config.

configure: error:

Please check that gtk-config is in path, the directory

where GTK+ libraries are installed (returned by

'gtk-config --libs' command) is in LD_LIBRARY_PATH or

equivalent variable and GTK+ is version 1.2.3 or above.

I know I have GTk I use the gimp any ideas?