Build error on OSX Yosemite about ipopt.jl HOT 14 CLOSED

I'm also seeing this, but it should be reported at homebrew-juliadeps like the error message states. I'll open an issue there.

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Not sure if yosemite is supported yet: https://groups.google.com/d/msg/julia-users/7D0O6ltoWjs/-RvizlHnbvkJ
CC @staticfloat

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@kofron, in the meantime, if you install gfortran you should be able to build Ipopt from source.

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Yeah I think this is Yosemite related, its trying to compile it

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@mlubin Ipopt builds fine - but julia won't pick it up. When I do Pkg.add("Ipopt") it thinks it needs to build the homebrew-juliadeps tap to satisfy the dep, even though Ipopt is built and linked on my system.

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@kofron, the ipopt from homebrew-science isn't compatible with julia for a number of reasons. You can build the julia version from source with Pkg.build("Ipopt") if gfortran is installed.

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If gfortran is installed and you still get the above error, then something weird is going on.

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@mlubin thats exactly my point - gfortran is installed. it seems like there's something pathological going on, but I can't pinpoint it.

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Try commenting out the four lines under # OS X in src/build.jl and trying again. That will bypass Homebrew.jl and just use the simple build script.

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@mlubin That did work, thanks.

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@kofron unfortuantely, things are going to be a little hairy until I can get yosemite bottles built. Source builds from Homebrew.jl "should" work, but I can't guarantee it. :P Glad you've got it working so far though.

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As a short aside, I figured out what was going on here. It's not yet fixed, but at least I know what the problem is.

First off, Homebrew does a lot of things to shield installs from external compilers. Unless you declare depends_on :fortran inside of your formula, it will actually shield your formula from gfortran from the gcc homebrew package. I'm not sure what the wisdom behind that is, but I'm sure they have their reasons. Unfortunately, that means that even though I had declared :fortran as a build-time dependency, even when installing the bottle-only version, it still tries to install a fortran compiler, which means that the user has to compile gcc from scratch just to install ipopt! What a waste of time and greenhouse gases. So my workflow here is to uncomment this line when building a new version of ipopt, then comment it again when I have bottles. I'll have bottles for Yosemite as soon as I get the buildslave setup, which is currently running in the background. (exciting!)

EDIT: I may have a strange definition of exciting....

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@staticfloat, is this issue resolved now?

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Yes, this should be resolved now.

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