problem installing ogg

hello,

i'm experiencing an awkward problem when attempting to build libogg  
on OSX 10.4. i use 'make install' as root and get the following errors:

Making install in src
test -z "/usr/local/lib" || /Users/krass/libogg-1.1.3/install-sh -d "/ 
usr/local/lib"
  /bin/sh ../libtool --mode=install /usr/bin/install -c  'libogg.la'  
'/usr/local/lib/libogg.la'
/usr/bin/install -c .libs/libogg.0.5.3.dylib /usr/local/lib/libogg. 
0.5.3.dylib
install: /usr/local/lib/libogg.0.5.3.dylib: Permission denied
make[2]: *** [install-libLTLIBRARIES] Error 71
make[1]: *** [install-am] Error 2
make: *** [install-recursive] Error 1

any ideas? how come permission is being denied...?

thanks,
k