SDL init error

Any idea why Im getting this error?

Couldn’t initialize SDL: Failed loading libSDLx11.so.0.9:
/usr/local/lib/libSDLx11.so.0.9: undefined symbol: __bzero

I get it when I run any of the demo programs.

-Garrett, WPI student majoring in Computer Science.

“He who joyfully marches in rank and file has already earned
my contempt. He has been given a large brain by mistake, since
for him the spinal cord would suffice.” -Albert Einstein