[PATCH] Use AC_SUBST_FILE to replace @DEPEND@ with contents of .depend

[Thorsten Glaser]

On Sun, 18 Apr 2021, Michael Forney wrote:

> argument size limit. In particular, since autoconf 2.70, $as_echo
> no longer uses `print -r` on ksh shells[1], causing the following
> message when creating config.log on Linux with oksh:
> 
>   ./configure: printf: Argument list too long

What? Whose stupid idea was *that*?

> [1] http://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=2b59b6f8a79b8bf77e178ff4e5aa0ede433d39cf;hp=bea5177adc0c924fe7483509a5e38a6d49319fcb

Dear GNU autoconf developer,

please keep using print -r -- if $KSH_VERSION is not unset/empty.
This is *much* faster and more reliable. (Also, print -nr -- to
omit the trailing newline.)

Thanks,
//mirabilos (developer of mksh)