building on Mavericks OS X 10.9

[revkarol]

Just posting a bug report.

I got root to build with the latest git trunk.  

rootpy seems to work with the latest version.

root_numpy doesn't seem to build however.  Seems to mostly to do with the new compiler - clang.

Log is attached.

Regards,

Karol.

[Noel Dawe]

Hi Karol,

Did root_numpy compile with a previous version of clang? I am searching around and see other cases where problems have been found in Cython's generated code where clang compatibility is broken. We can investigate.

Can you install gcc/g++ on your mac and compile with that instead for now?

Noel

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[Noel Dawe]

Hi Karol,

Can you confirm?

Thanks,

Noel

[Noel Dawe]

Hi Karol,

I am wondering if this is a solution:

http://stackoverflow.com/a/19592680/1002176

xcode-select --install

to update the XCode Command Line Tools.

Unfortunately I do not use a Mac so I cannot test it for you. I have been reading around the net about various issues in Mavericks. Seems like root_numpy is not alone in terms of compilation problems after updating that OS.

Noel

[Karol Hennessy]

Sorry about the delay Noel.

I'm incredibly busy at the moment.  I'll try give it a shot tonight.

I've already done:  xcode-select --install

You're right in that it's only root_numpy.  I'll see if it will work with gcc.

[Noel Dawe]

Hi Karol,

Thanks to Jacob Howard for fixing this issue! See this change that was just merged in:

https://github.com/rootpy/root_numpy/pull/118

root_numpy should hopefully now compile for you.

Noel

[Noel Dawe]

Thanks Jacob. I will add this note to the install docs: http://rootpy.github.io/root_numpy/install.html

Noel

On Wed, Nov 6, 2013 at 8:29 AM, Jacob Howard <ja...@havoc.io> wrote:

Just as a general followup, if you're compiling root_numpy with Clang and linking against libc++ (which hopefully works now :) ), you will also need to compile ROOT with Clang and libc++, because libstdc++ and libc++ are not ABI compatible.

ROOT compiles with Clang and libc++ since version 5.34/11, but PyROOT has a bug which was fixed after that, so it is best to compile from the v5-34-00-patches branch of ROOT.  You can do this easily with Homebrew via:

brew install --HEAD root

Best,

Jacob

[Noel Dawe]

I released version 3.1.0 with this fix among other improvements:

https://pypi.python.org/pypi/root_numpy

Also note that you can now specify branch expressions in the branches list when converting a TTree into an array:

rec = tree2rec(intree,
    branches=['x', 'y', 'sqrt(y)', 'TMath::Landau(x)', 'cos(x)*sin(y)'],
    selection='z > 0',
    start=0, stop=10, step=2)

(See http://rootpy.github.io/root_numpy/)

Cheers!

Noel

[Jacob Howard]

Hi Noel,

That's really cool.  Out of curiosity, can one use user-defined functions which ROOT is aware of, as in (e.g.) TTree::Draw?

Best,
Jacob

[Noel Dawe]

Hi Jacob,

Yes, the underlying code in root_numpy is similar to what TTree::Draw does with TTreePlayer so you can gSystem.Load() your own libraries containing your functions or even use rootpy's "compiled" module to define your C functions in the python source itself:

https://gist.github.com/ndawe/7411021

Cheers,

Noel