[gdal-dev] armadillo error with homebrew install of ogr2ogr

[Marsh, Chris]

I just checked on my machine and I have Armadillo 10.1.0 and GDAL 3.1.3 from homebrew core  and running `ogr2ogr` returns the help page correctly.

Looking at the formula, and I don't even see a dependency on Armadillo for GDAL
https://github.com/Homebrew/homebrew-core/blob/master/Formula/gdal.rb

Are you using the osgeo4mac tap? If so, then it's a problem with their build script as per this issue
https://github.com/OSGeo/homebrew-osgeo4mac/issues/1399

core has the up to date gdal and proj now, so I'm no longer sure of the benefit of using osgeo4mac; current suggested work around is to actually use the core gdal to avoid this problem
https://github.com/OSGeo/homebrew-osgeo4mac/issues/1399#issuecomment-722482161

I would remove anything installed from the osgeo4mac tap, remove the tap, install gdal core and see. 
Alternatively you are up and running with the symlink so I hope the above gives you an explanation as to the problem

Cheers
Chris

> On Nov 10, 2020, at 1:29 PM, John Muccigrosso <muccigrosso at icloud.com> wrote:
> 
> CAUTION: External to USask. Verify sender and use caution with links and attachments. Forward suspicious emails to phishing at usask.ca
> 
> 
> Sean wrote:
> 
>> If some other homebrew package updated your armadillo library after you
>> installed gdal, you'll need to reinstall gdal.
> 
> A simple uninstall/reinstall of osgeo/gdal did _not_ do the trick, and all the bottles in the current .rb have the hash, so I assume they're all the same, so I'm not quite sure where to go with the post Sean suggested.
> 
> Oddly - to me anyway - the only thing I can see that uses armadillo in brew is osgeo/gdal. armadillo was updated on October 26, so perhaps that's what borked it. I'm not sure there's a way to force homebrew to use a specific version, or not upgrade beyond one.
> 
> For now, I've hacked this by creating a symlink from version 10 of armadillo to the desired version 9 filename. Ugly, but works.
> 
> John
> 
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