since this pcommit

Bad       : d869bb1600942c01a77539128f9ba5b5b55ad647
Author    : ramin <lordrasmus@gmail.com>
Date      : Wed Dec 7 11:59:57 2022 +0100
Message   : add getauxval() implementation

c6x build fails because DT_DSBT_BASE_IDX is not defined

seems that #include <dl-sysdep.h> is missing if the compiler defines __DSBT__