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Re: AS_ECHO calls finding their way into calls

From: Eric Blake
Subject: Re: AS_ECHO calls finding their way into calls
Date: Mon, 15 Sep 2008 05:17:50 -0600
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According to BJ Terry on 9/15/2008 12:28 AM:
> AC_ERLANG_CHECK_LIB(erl_interface)

I'm not as familiar with Erlang, so it very well could be that you've
discovered a bug in autoconf.

> Now, I did note that his has $as_echo wherever mine had just echo, and I
> don't know why that is, and don't know why google couldn't provide any
> useful links on the matter.

Because the use of 'echo' is not always portable, so newer autoconf
guarantees a safe fallback (such as printf) in case it has detected that
your shell's echo does not fit autoconf's needs.

> The real problem appears to be that his
> "ac_link" variable has AS_ECHO in it instead of echo, which seems like
> it would cause problems to me.
> For the record, I am using autoconf 2.60 and M4 version 1.4.5, and he is
> using autoconf 2.62 and M4 version 1.4.11. My platform is Mac OS X 10.5
> running fink versions of these tools and he is using Mac OS X 10.4
> running the darwinports version, if that makes any difference.

It looks like you are reporting a regression that occurred sometime
between 2.60 and 2.62.  Could you please check whether 2.63 also has the
bug, so we can fix it?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
Version: GnuPG v1.4.9 (Cygwin)
Comment: Public key at
Comment: Using GnuPG with Mozilla -


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