https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467
--- Comment #2 from angelo <angelo70 at gmail dot com> ---
Well the final error is :
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:198:13:
internal compiler error: in emit_library_call_value_1, at calls.c:4401
return (__sync_val_compare_and_swap_##WIDTH (ptr, oldval, newval) \
^
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:203:1:
note: in expansion of macro 'SUBWORD_BOOL_CAS'
SUBWORD_BOOL_CAS (unsigned char, 1)
I tried also gcc 5.3.0, same error using --with-arch=cf.
Seems like m68k branch is not considered at all.
