update blast osx build

[rpetit3]

Trying to enable OSX build on mac to see what happens

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[boratyng]

Hi @rpetit3, I cannot find your error messages for the Mac build, but I suspect that the problem may be the OpenMP library. There have been problems with BLAST and OpenMP on a Mac. Also, Magic-BLAST is using most of the same code as BLAST and it seems to be building on a Mac, so you may find something useful there: https://github.com/bioconda/bioconda-recipes/tree/master/recipes/magicblast.

[rpetit3]

Thank you @boratyng I'll try removing open-mp

[rpetit3]

Some progress bu failling here: https://dev.azure.com/bioconda/bioconda-recipes/_build/results?buildId=31973&view=logs&j=1b052f1d-4456-52f0-9d43-71c4c5bd734d&t=edc48dcd-1fc2-5e3b-7036-7be9cea00123&l=1579

Only thing I really have to work with is this:

ERROR: ./build-system/project_tree_builder/project_tree_builder does not work

[boratyng]

This is am NCBI build system utility. I talked to NCBI build team and they suggested to use cmake. I would like to try a few things. @rpetit3, should I push changes to your PR or open a new one?

[rpetit3]

If you are able to push by all means go for it, but also if its easier to just create a new PR, do it and feel free to request me as a reviewer