Problem when compling glibc-2.1.2

Hi~   Confronting with erromessage "undefined refrenced `__NR_rt_sigreturn'..."   I configured with options, '--enable-add-ons' and '--prefix=/usr'.   I searched in subdir 'db2', using grep `__NR_rt_sigreturn' *.c *.h, but I can't find anything...   Does anybody have an idea

Problem when compling glibc-2.1.2

Hi~   Confonting not founding `__NR_rt_sigreturn'...   I configured with options, '--enable-add-ons' and '--prefix=/usr'.   I searched in subdir 'db2', using grep `__NR_rt_sigreturn' *.c *.h, but I can't find anything...   Does anybody have an idea?   I have, Kernel: 2.0.3