gstreamer problem

[Fredrick Nilsson]

hello!

I'm trying to upgrade gstreamer, but get this build error:

/bin/sh ../libtool --mode=link cc  -O -pipe   -L/usr/local/lib -o
cothreads-gthreads  cothreads_gthreads-cothreads.o
../cothreads/libcothreads-gthreads.la -lc -pthread -L/usr/local/lib
-lgthread-2.0 -lglib-2.0 -liconv   
cc -O -pipe -o cothreads-gthreads cothreads_gthreads-cothreads.o -pthread
-L/usr/local/lib ../cothreads/.libs/libcothreads-gthreads.al -lgthread-2.0
-lglib-2.0 -liconv
../cothreads/.libs/libcothreads-gthreads.al(libcothreads_gthreads_la-pth_mct
x.lo): In function `pth_mctx_set':
libcothreads_gthreads_la-pth_mctx.lo(.text+0x9b): undefined reference to
`sigaltstack'
libcothreads_gthreads_la-pth_mctx.lo(.text+0x100): undefined reference to
`sigaltstack'
libcothreads_gthreads_la-pth_mctx.lo(.text+0x112): undefined reference to
`sigaltstack'
libcothreads_gthreads_la-pth_mctx.lo(.text+0x127): undefined reference to
`sigaltstack'
libcothreads_gthreads_la-pth_mctx.lo(.text+0x158): undefined reference to
`sigaltstack'
gmake[5]: *** [cothreads-gthreads] Error 1
gmake[5]: Leaving directory
`/usr/ports/multimedia/gstreamer/work/gstreamer-0.6.1/libs/ext/cothreads/tes
ts'
gmake[4]: *** [all-recursive] Error 1
gmake[4]: Leaving directory
`/usr/ports/multimedia/gstreamer/work/gstreamer-0.6.1/libs/ext/cothreads'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory
`/usr/ports/multimedia/gstreamer/work/gstreamer-0.6.1/libs/ext'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory
`/usr/ports/multimedia/gstreamer/work/gstreamer-0.6.1/libs'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory
`/usr/ports/multimedia/gstreamer/work/gstreamer-0.6.1'
gmake: *** [all] Error 2
*** Error code 2

Stop in /usr/ports/multimedia/gstreamer.
*** Error code 1

Stop in /usr/ports/multimedia/gstreamer.

how come?

thanks!
.f