-name \*.[18] -prune -o \
-name romcc -type d -prune -o \
-name crossgcc -type d -prune -o \
+ -name vendorcode -type d -prune -o \
-type f -exec \
grep -L "51 Franklin St, Fifth Floor, Boston" {} + | \
sed -e "s,^.*$,File & has no valid GPL header.,"