LinuxQuestions.org - gnome installation error

I have just finished installation of gentoo and am trying to emerge gnome. However, i get this error message:

In file included from /usr/include/err.h:36;
from giounix.c:37
/usr/include/bits/errno.h:25:26: linux/errno.h: No such file or directory
giounix.c: In function 'g_io_unix_read':
giounix.c:166: error: 'EINVAL' undeclared (first use in this function)
giounix.c:166: error: (each undeclared identifier is reported only once
giounix.c:166: error: for each function it appears in)
giounix.c:168: error: 'EAGAIN' undeclared (first use in this function)
giounix.c: In function 'g_io_unix_write':
giounix.c:197: error: 'EINVAL' undeclared (first use in this function)
giounix.c:199: error: 'EAGAIN' undeclared (first use in this function)
giounix.c: In function 'g_io_unix_seek':
giounix.c:243: error: 'EINVAL' undeclared (first use in this function)
make[4]: *** [giounix.lo] Error 1
make[4]: *** Waiting for unfinished jobs....
rm -f .libs/glist.lo
gcc -DHAVE_CONFIG_H -I. -I. -I. -DG_LOG_DOMAIN=g_log_domain_glib -2 -march=i686 -pipe -Wall -posix -D_REENTRANT -c glist.c -fPIC -DPIC -o .libs/glist.lo (cd . && ln -s glist.o glist.lo)
make[4]: Leaving directory '/var/tmp/portage/pkgconfig-0.15.0/work/pkgconfig-0.15.0/glib-1.2.8'
make[3]: ***[all-recursive] Error 1
make[3]: Leaving directory '/var/tmp/portage/pkgconfig-0.15.0/work/pkgconfig-0.15.0/glib-1.2.8'
make[2]: ***[all-recursive-am] Error 2
make[2]: Leaving directory '/var/tmp/portage/pkgconfig-0.15.0/work/pkgconfig-0.15.0/glib-1.2.8'
make[1]: ***[all-recursive] Error 1
make[1]: Leaving directory '/var/tmp/portage/pkgconfig-0.15.0/work/pkgconfig-0.15.0/glib-1.2.8'
make: ***[all-recursive-am] Error 2

any ideas? thanks