There are some problems on libc/gen in the source supped
tonight (1997-11-09 JST).

It seems that the problem around /usr/include/fts.h, but I
couldn't figure out.

% cd /usr/src/lib/libc
% make
cc -O -DNLS -DYP -DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT -I/current/src/lib/libc/include -D__DBINTERFACE_PRIVATE -DPOSIX_MISTAKE -DFLOATING_POINT  -Werror -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith  -c /current/src/lib/libc/gen/__fts13.c
In file included from /current/src/lib/libc/gen/__fts13.c:52:
/usr/include/fts.h:138: syntax error before `__fts_children13'
/usr/include/fts.h:139: syntax error before `__fts_close13'
/usr/include/fts.h:142: syntax error before `__fts_open13'
/usr/include/fts.h:143: syntax error before `__fts_read13'
/usr/include/fts.h:144: syntax error before `__fts_set13'
cc1: warnings being treated as errors
/current/src/lib/libc/gen/__fts13.c:106: warning: function declaration isn't a prototype
/current/src/lib/libc/gen/__fts13.c:240: warning: function declaration isn't a prototype
/current/src/lib/libc/gen/__fts13.c:293: warning: function declaration isn't a prototype
/current/src/lib/libc/gen/__fts13.c:485: warning: function declaration isn't a prototype
/current/src/lib/libc/gen/__fts13.c:500: warning: function declaration isn't a prototype
*** Error code 1

Stop.