Only 2 files had to be adjusted to build GNU autoconf on MPE/iX...


shell/iX> diff old/install-sh new/install-sh

223c223
<       dsttmp=$dstdir/#inst.$$#
---
>       dsttmp=$dstdir/_inst.$$_


shell/iX> diff old/acgeneral.m4 new/acgeneral.m4

1668c1668,1670
< if AC_TRY_EVAL(ac_link) && test -s conftest; then
---
> if AC_TRY_EVAL(ac_link) && test -s conftest &&
>   { ! callci "run ./conftest;stdin=*notfound" | /bin/grep ^UNRESOLVED 1>&AC_FD_CC; }
> then


Not quite a lot of changes, isn't it?