math/sage compile error

[Bruce]

Error on amd freebsd-9.2

Error building Sage.

The following package(s) may have failed to build:

package: linbox-1.3.2.p0
log file: /usr/ports/math/sage/work/sage-6.1.1/logs/pkgs/linbox-1.3.2.p0.log
build directory: 
/usr/ports/math/sage/work/sage-6.1.1/local/var/tmp/sage/build/linbox-1.3.2.p0

The build directory may contain configuration files and other potentially
helpful information. WARNING: if you now run 'make' again, the build
directory will, by default, be deleted. Set the environment variable
SAGE_KEEP_BUILT_SPKGS to 'yes' to prevent this.

gmake: *** [build] Error 1
*** [do-build] Error code 1

Stop in /usr/ports/math/sage.
*** [stage] Error code 1

Stop in /usr/ports/math/sage.