How to debug a code compiled by clang

I am unable to use gdb on code compiled by clang/clang++ with -g options enabled.
when I do break main/start, gdb says file not found.
Is it by design? If so, How to debug binaries compiled by clang.

–regards
–Dev

Same way you would with files compiled by gcc. Are you sure you have
the right file name for the binary?

The error message seen is this

[deleisha@deleisha pegasus]$ gdb cimserver
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-56.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type “show copying”
and “show warranty” for details.
This GDB was configured as “x86_64-redhat-linux-gnu”.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>…
Reading symbols from /home/deleisha/CodeSpace/pegasus/pkg/bin/cimserver…done.
(gdb) start
Temporary breakpoint 1 at 0x4049fd: file cimserver.cpp, line 486.
Starting program: /home/deleisha/CodeSpace/pegasus/pkg/bin/cimserver
[Thread debugging using libthread_db enabled]

Temporary breakpoint 1, main (argc=1, argv=0x7fffffffdda8) at cimserver.cpp:486
486 cimserver.cpp: No such file or directory.
in cimserver.cpp
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.80.el6_3.3.x86_64 keyutils-libs-1.4-4.el6.x86_64 krb5-libs-1.9-33.el6.x86_64 libcom_err-1.41.12-12.el6.x86_64 libgcc-4.4.6-4.el6.x86_64 libselinux-2.0.94-5.3.el6.x86_64 libstdc+±4.4.6-4.el6.x86_64 nss-softokn-freebl-3.12.9-11.el6.x86_64 openssl-1.0.0-20.el6_2.5.x86_64 zlib-1.2.3-27.el6.x86_64
(gdb)