problems with gtk source install

[elPunishar <stukas14 gmx net>]

hi everyone,

i'm trying to compile GIMP 2.0.4 from source on mandrake 9.1
i also got the atk, glib and pango libs.

current problem: 
when trying to compile pango, configure says "GLIB - version >= 2.4.0... no"

excerpt from config.log
************************************************************************
configure:21610: checking for GLIB - version >= 2.4.0
configure:21759: result: no
configure:21792: gcc -o conftest -g -O2 -Wall    conftest.c   >&5
conftest.c:27:18: glib.h: No such file or directory
conftest.c: In function `main':
conftest.c:33: `glib_major_version' undeclared (first use in this function)
conftest.c:33: (Each undeclared identifier is reported only once
conftest.c:33: for each function it appears in.)
conftest.c:33: `glib_minor_version' undeclared (first use in this function)
conftest.c:33: `glib_micro_version' undeclared (first use in this function)
configure:21798: $? = 1
configure: failed program was:
| /* confdefs.h.  */
************************************************************************

but i just compiled and installed GLIB 2.4.6 without any errors.

is it okay that my /usr/local/lib/glib-2.0 only contains an "include" 
directory with only "glibconfig.h" in it ?
shouldn't there be also a "lib" dir with stuff in it ?

what could be the problem? i don't know what do to.

tnx & greetings,
stu