Making all in multiprocessing
make[3]: Entering directory '/build/seed/src/seed-3.8.1/modules/multiprocessing'
CC libseed_multiprocessing_la-seed-multiprocessing.lo
CCLD libseed_multiprocessing.la
make[3]: Leaving directory '/build/seed/src/seed-3.8.1/modules/multiprocessing'
Making all in readline
make[3]: Entering directory '/build/seed/src/seed-3.8.1/modules/readline'
CC libseed_readline_la-seed-readline.lo
seed-readline.c: In function 'seed_readline_bind':
seed-readline.c:80:22: error: 'Function' undeclared (first use in this function)
rl_bind_key(*key, (Function *) c);
^
seed-readline.c:80:22: note: each undeclared identifier is reported only once for each function it appears in
seed-readline.c:80:32: error: expected expression before ')' token
rl_bind_key(*key, (Function *) c);
^
seed-readline.c:73:16: warning: variable 'c' set but not used [-Wunused-but-set-variable]
ffi_closure *c;
^
Makefile:480: recipe for target 'libseed_readline_la-seed-readline.lo' failed
make[3]: *** [libseed_readline_la-seed-readline.lo] Error 1
make[3]: Leaving directory '/build/seed/src/seed-3.8.1/modules/readline'
Makefile:378: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/build/seed/src/seed-3.8.1/modules'
Makefile:562: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/build/seed/src/seed-3.8.1'
Makefile:406: recipe for target 'all' failed
make: *** [all] Error 2
==> ERROR: A failure occurred in build().
Aborting...

Steps to reproduce:
sudo extra-x86_64-build