Installing a Crosscompiler on Your PC : Determine C Library

Log into device and identify C library

e.g. on AML-7100 handheld barcode scanner:
  # ls /lib/libc-*.so
  libc-2.1.3.so

e.g. on WRT54G:
  # strings /lib/libc.so.6 | grep GLIBC
  GLIBC_2.2.3