warnings important?

[Michael Harnois <mharnois willinet net>]

Are either of these warnings something that should be attended to? I'm 
running egcs-1.1.1-prerelease3 and glibc-2.0.104.

/usr/include/jconfig.h:12: warning: `HAVE_STDLIB_H' redefined
../config.h:285: warning: this is the location of the previous definition
In file included from plc.c:162:
XmHTMLfuncs.h:336: warning: `strdup' redefined
/usr/include/bits/string2.h:1037: warning: this is the location of the previous definition

-- 
Michael D. Harnois, Redeemer Lutheran Church, Washburn, IA 
mharnois@willinet.net                      aa0bt@aa0bt.ampr.org 
 Never, "for the sake of peace and quiet," deny your own 
 experience or convictions. -- Dag Hammarskjold