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Re: automake-1.11.1 test failure on Mac OS X 10.6

From: Rugxulo
Subject: Re: automake-1.11.1 test failure on Mac OS X 10.6
Date: Sat, 16 Jan 2010 06:46:22 -0600


On Sat, Jan 16, 2010 at 5:46 AM, Ralf Wildenhues <address@hidden> wrote:
> Hello Rugxulo, Andris,
> I need your help for a bit of Autoconf testing for me; see below.
> This is where said patch went wrong: the logic never meant to use '\r'
> which some sed's but not all expand to a literal carriage return; IOW,
> we were relying on, and fooled by, undefined behavior in sed here.
> Can you please try the following: grab Autoconf 2.65 from ftp.gnu.org,
> apply the patch below, build and install it on DJGPP, and see whether
> it works on this example package?

I'm not sure 2.65 will even build with DJGPP, that's the problem. At
least, not without some work, and it's probably beyond me. I can maybe
try building later, though.

>    Fix substitution of carriage return on Darwin.
> -  ac_cs_awk_cr='\r'
> +  ac_cs_awk_cr='\\r'

Here's what I want to know:

1). What sed (vendor, version) does Mac OS X/Darwin use? *BSD or just
really old GNU?
2). Is it "\r" or "\\r" that is really undefined? I was never sure if
"\\" was supposed to be undefined in POSIX (e.g. gnused --posix) or

Hmmm, latest sed.info (4.2.1) says this:

     Note that the only C-like backslash sequences that you can
     portably assume to be interpreted are `\n' and `\\'

Somebody should probably ask Paolo Bonzini. I'll cc him.   :-)

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