gcc-15.2.0 problem?

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Needs libdw from elfutils to build rpm.
My intention is to rebuild all basic software as .rpm
But even LFS-13.0 skips building libdw from elfutils-0.194
Previous versions 0.194 0.193 and 0.191 same error:
   ...
   CC       riscv_disasm.o
riscv_disasm.c: In function 'riscv_disasm':
riscv_disasm.c:1262:46: error: initialization discards 'const' qualifier 
from pointer target type [-Werror=discarded-qualifiers]
  1262 |                   struct known_csrs *found = bsearch (&key, known,
       |                                              ^~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [Makefile:576: riscv_disasm.o] Error 1
...

It looks like I need to return to previous gcc-14.2.0
Other possibilities?

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