Freebsd compile problem

Hi all, i have a problem on compiling crystalentitylayer-devel on a FreeBSD 7.0. I got the following output:

c++ -c -o ./out/freebsd/optimize/plugins/propclass/awswin/awswin.o -I. -I./include -I. -O2 -fno-strict-aliasing -pipe -pipe -Wall -fvisibility=hidden -O2 -fno-strict-aliasing -pipe -DPACKAGE_NAME=CEL -Wall -O2 -fno-strict-aliasing -pipe -fvisibility-inlines-hidden -O2 -fno-strict-aliasing -pipe -O3 -fPIC -I/usr/local/include/crystalspace plugins/propclass/awswin/awswin.cpp

...failed C++ ./out/freebsd/optimize/plugins/propclass/awswin/awswin.o ...
...skipped pfawswin.so for lack of <plugins!propclass!awswin!>awswin.o...
...failed updating 1 target(s)...
...skipped 1 target(s)...
...updated 90 target(s)...
*** Error code 1

Stop in /usr/ports/graphics/crystalentitylayer-devel.
*** Error code 1

Stop in /usr/ports/graphics/crystalentitylayer-devel.

Thank you.