As of Simile version 5.0, glibc version 2.4 is required to run the Linux Simile build available from simulistics.com. (If you have an earlier version we may be able to build Simile for you. Let us know the version of glibc you have and other details of your Linux distribution.)
To find the version of glibc on most systems, including Debian, call the library as a program:
(uiserver)::~ > /lib/libc.so.6
GNU C Library stable release version 2.3.6, by Roland McGrath et al.
On Debian-based systems: