checking for suffix of object files... configure: error: in `/root/src/glibc':

It seems that you encountered an error during the configuration of the GNU C Library (glibc). The error message "checking for suffix of object files..." is incomplete, so it's difficult to provide a specific solution without more information.

However, this error message usually indicates that there is a problem with the toolchain or the configuration options used when building glibc. Here are some things you can try to resolve the issue:

1. Make sure that you have all the necessary dependencies installed, such as the GNU Compiler Collection (GCC), GNU Binutils, and GNU Make.

2. Check the configuration options you used when running the configure script. Make sure that they are correct and appropriate for your system.

3. Try running the configure script again with the --disable-sanity-checks option. This will disable some of the more strict checks performed by the configuration script, which may help you identify the problem.

4. If none of these solutions work, consider asking for help on a forum or mailing list dedicated to glibc or Linux development. There may be someone with more experience who can help you diagnose and fix the issue.