pkg-config and glib circular denpendency

when configure pkg-config, it says error

checking if internal glib should be used... no
checking for pkg-config... no
checking for GLIB... no
configure: error: Either a previously installed pkg-config or "glib-2.0 >= 2.16" could not be found. Please set GLIB_CFLAGS and GLIB_LIBS to the correct values or pass --with-internal-glib to configure to use the bundled copy.

https://mail.gnome.org/archives/gtk-devel-list/2011-September/msg00215.html http://dossy.org/2008/03/pkgconfig-and-glib-chicken-and-egg-same-thing/