The master branch (cc22bd7f708fc3f5e793bf0138cd340f71c0feb9) on Ubuntu 22.04:
0$ ./autogen.sh
1...
2src/Makefile.bench.include:97: warning: %.raw.h was already defined in condition TRUE, which includes condition ENABLE_BENCH ...
3src/Makefile.am:1065: 'src/Makefile.bench.include' included from here
4src/Makefile.test.include:420: ... '%.raw.h' previously defined here
5src/Makefile.am:1062: 'src/Makefile.test.include' included from here
6...