Both Cygwin and MacOS crash in pretty much the same way. By disabling the JIT, I was able to get the Cygwin build to run to completion. On MacOS with --disable-jit, however, I am now getting an entirely new failure:
CC readline.lo
readline.c:432:7: warning: implicitly declaring library function 'strncmp' with type 'int (const char *, const char *,
unsigned long)' [-Wimplicit-function-declaration]
if (strncmp (rl_get_keymap_name (rl_get_keymap ()), "vi", 2))
^
readline.c:432:7: note: include the header <string.h> or explicitly provide a declaration for 'strncmp'
readline.c:432:16: warning: implicit declaration of function 'rl_get_keymap_name' is invalid in C99
[-Wimplicit-function-declaration]
if (strncmp (rl_get_keymap_name (rl_get_keymap ()), "vi", 2))
^
readline.c:432:16: warning: incompatible integer to pointer conversion passing 'int' to parameter of type 'const char *'
[-Wint-conversion]
if (strncmp (rl_get_keymap_name (rl_get_keymap ()), "vi", 2))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3 warnings generated.
CCLD
guile-readline.laUndefined symbols for architecture x86_64:
"_rl_get_keymap_name", referenced from:
_scm_init_readline in readline.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)