"Resolution" of issue https://bugs.gentoo.org/627868, as suggested in RedHat bug https://bugzilla.redhat.com/show_bug.cgi?id=1426109.

--- a/configure.ac
+++ b/configure.ac
@@ -324,7 +324,6 @@
 
   dnl Checking for libresolv
   if test ${gm_platform} = "linux" ; then
-  	AC_CHECK_LIB(resolv, res_gethostbyaddr, [LIBS="-lresolv $LIBS"], AC_MSG_ERROR([You need the libresolv library to compile Ekiga]), -lresolv)
   	LDAP_LIBS="${LDAP_LIBS} -lresolv"
   fi
   found_ldap="yes"
--- a/configure
+++ b/configure
@@ -18873,48 +18873,6 @@
   LDAP_LIBS="$LDAP_LIBS -lsasl2"
 
     if test ${gm_platform} = "linux" ; then
-  	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for res_gethostbyaddr in -lresolv" >&5
-$as_echo_n "checking for res_gethostbyaddr in -lresolv... " >&6; }
-if ${ac_cv_lib_resolv_res_gethostbyaddr+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lresolv -lresolv $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-/* Override any GCC internal prototype to avoid an error.
-   Use char because int might match the return type of a GCC
-   builtin and then its argument prototype would still apply.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-char res_gethostbyaddr ();
-int
-main ()
-{
-return res_gethostbyaddr ();
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_cxx_try_link "$LINENO"; then :
-  ac_cv_lib_resolv_res_gethostbyaddr=yes
-else
-  ac_cv_lib_resolv_res_gethostbyaddr=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_resolv_res_gethostbyaddr" >&5
-$as_echo "$ac_cv_lib_resolv_res_gethostbyaddr" >&6; }
-if test "x$ac_cv_lib_resolv_res_gethostbyaddr" = xyes; then :
-  LIBS="-lresolv $LIBS"
-else
-  as_fn_error $? "You need the libresolv library to compile Ekiga" "$LINENO" 5
-fi
-
   	LDAP_LIBS="${LDAP_LIBS} -lresolv"
   fi
   found_ldap="yes"