[snip]
I attached the tarball that I tested. I think it's
primarily by the bug of bcc (not of autoconf), bcc
does not issue an error in the compilation that
should not be compiled successfully. But I wish if
autoconf has any workaround, or pre-checking of
bcc to avoid the trouble. Other legacy C compilers
(in 16bit era) are tested and known to work well?
I have no idea. But Autoconf is pretty old, at least
it already existed at a time where 16bit was very common.
If you have a way to actually execute code on the compile
system (get binfmt to execute 'elksemu $binary' should be
possible), then you can avoid compile-only tests and make
AC_COMPUTE_INT use the cheaper execution test.
Cheers,
Ralf