Compile gtk+ 1.2.8 problem

[hcchin strd csam com my]

    I am having some problem with configure gtk+ 1.2.8

> ./configure
...
checking for glib-config... /usr/bin/glib-config
checking for GLIB - version >= 1.2.8... no

    but I already install glib 1.2.8

> ls -l /usr/lib | grep glib
drwxr-xr-x   3 root     root         1024 Jun 29 22:38 glib
lrwxrwxrwx   1 root     root           20 Jun 29 23:27 libglib-1.2.so.0 
-> libgl
ib-1.2.so.0.0.8
-rwxr-xr-x   1 root     root       450484 Jun 29 23:27 libglib-1.2.so.0.0.8
-rw-r--r--   1 root     root       874988 Jun 29 23:27 libglib.a
-rwxr-xr-x   1 root     root          660 Jun 29 23:27 libglib.la
lrwxrwxrwx   1 root     root           20 Jun 29 23:27 libglib.so -> 
libglib-1.2
.so.0.0.8
lrwxrwxrwx   1 root     root           20 Jun 29 22:50 libglib.so.1 -> 
libglib-1
.2.so.0.0.8

    Can anyone help? Thank you.