Seems to be the gnu version of date, which is able to do this:

$ date +'-D__TODAY__=%B %e, %Y'
-D__TODAY__=Mai 14, 2013

Maybe the makefile is written on solaris, where the option does not work with the normal date binary.

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-----Ursprüngliche Nachricht-----
Von: curl-library [mailto:curl-library-bounces_at_cool.haxx.se] Im Auftrag von Nick Zitzmann
Gesendet: Dienstag, 14. Mai 2013 19:22
An: libcurl development
Betreff: Re: site contents now off git
On May 13, 2013, at 11:44 AM, Daniel Stenberg <daniel_at_haxx.se> wrote:
> Hi all,
> 
> I've just switched the web site to now update its contents automatically from this git repository: https://github.com/bagder/curl-www
> 
> Please point out any problems you encounter as I'm sure there are some flaws left due to this transition.
Question: How do we make it? It looks like it uses a makefile to generate the HTML, but when I run make, I get this:
===
% make
make: gnudate: Command not found
preprocessing sflogo.html
i686-apple-darwin11-llvm-gcc-4.2: '-V' must come at the start of the command line
make: *** [sflogo.html] Error 1
===
Nick Zitzmann
<http://www.chronosnet.com/>
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