From: <firedrake-bounces@imperial.ac.uk> on behalf of Matthew Knepley <knepley@gmail.com>
Reply-To: firedrake <firedrake@imperial.ac.uk>
Date: Tuesday, 6 November 2018 at 08:44
To: firedrake <firedrake@imperial.ac.uk>
Subject: Re: [firedrake] Installation with my own PETSc repository

 

On Tue, Nov 6, 2018 at 3:38 AM Lawrence Mitchell <wencel@gmail.com> wrote:

 

On 6 Nov 2018, at 08:27, Matthew Knepley <knepley@gmail.com> wrote:

sidx_api.cc:45:8: error: thread-local storage is unsupported for the current target

static __thread struct

 

Hmm. The internet suggests that various Xcode versions removed (and then later reinstated) thread local storage in apple's clang. Eg here: https://stackoverflow.com/questions/28094794/why-does-apple-clang-disallow-c11-thread-local-when-official-clang-supports/29929949#29929949

 

Seems like Xcode 8 and newer do support it. But you have a very old Xcode?

 

Yep, the old good Xcode is an old Xcode :)

 

Can we make __thread a #define which is checked by configure?

 

In principle, yes. Though this means we get further into maintaining a libspatialindex fork. Do we really need this?

 

 

  Thanks,

 

    Matt

 

Lawrence

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