LinuxQuestions.org - can't install gtk 2.4.4: "Requested 'glib-2.0 >= 2.4.0' but version of GLib is 2.2.3

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- - can't install gtk 2.4.4: "Requested 'glib-2.0 >= 2.4.0' but version of GLib is 2.2.3 (https://www.linuxquestions.org/questions/linux-software-2/cant-install-gtk-2-4-4-requested-glib-2-0-%3D-2-4-0-but-version-of-glib-is-2-2-3-a-205553/)

can't install gtk 2.4.4: "Requested 'glib-2.0 >= 2.4.0' but version of GLib is 2.2.3

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checking for glib-2.0 >= 2.4.0 atk >= 1.0.1 pango >= 1.4.0... Requested 'glib-2.0 >= 2.4.0' but version of GLib is 2.2.3

configure: error: Library requirements (glib-2.0 >= 2.4.0 atk >= 1.0.1 pango >= 1.4.0) not met; consider adjusting the PKG_CONFIG_PATH environment variable if your libraries are in a nonstandard prefix so pkg-config can find them.
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so i'm trying to install gtk 2.4.4. i just installed glib 2.4.4 w/ ./configure, make, make install. i've installed the recent versions of atk and pango.

however, i still get the message above. any ideas?