David Evans devans at
Fri May 22 16:16:43 PDT 2009

Christopher Barker wrote:
> Bryan Blackburn wrote:
>> On Thu, May 21, 2009 at 05:39:08PM -0700, Christopher Barker said:
>>> so it looks like netcdf4 support has been commented out. Anyone know 
>>> why?
>> Probably related to ticket #16262:
>> <>
> arrgg! I just spent a couple hours learning about how to write port 
> files and hacked the netcdf portfile, then found that 7 hours ago 
> someone had already fixed it!
> Oh well, at least I learned something. However:
>>> I'd also love to get '--enable-dap if possible
>>> It also looks like the recent release is 4.0.1, it would be nice to 
>>> get  that updated.
> The current port file does support netcdf4, which was the big one, but 
> it's still using version 4.0, rather than 4.0.1, and it isn't using 
> --enable-dap
> How might those changed get in? I've tested them, and they work for 
> me. As there is no maintainer, and the ticket has been closed, I'm not 
> sure how to proceed.
> --enable-dap required libcurl, which got pulled in from:
> /usr/lib/libcurl.3.dylib
> Should it use a macport libcurl instead? If so, how do I get it to do 
> that?
> By the way, I used python's hashlib module to generate the sha1 hash 
> -- is there a simple mac-ports way to do that?
> I've enclosed my version of the portfile (re-named to netcdf-4 to not 
> stomp on netcdf) in case anyone wants a look.
> -Chris
Chris --

The standard approach is to submit your changes in the form of a patch
against the current Portfile as an attachment to a new ticket requesting
the update.  A committer should then help you.

To use the MacPorts  libcurl (MacPorts libraries should be used when at
all possible to maintain a known environment) add


to the depends_lib statement.

if you run

sudo port -d checksum

on your Portfile,  if the checksums are not correct, port will give you
a debug message with what it has calculated for the hashs
for this file  in terms of a checksum statement.  Of course, you need to
make sure that you really have an official copy of
the distribution file if you are going to assign checksums to it.


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