[Users] problems compiling ETK on OSX Big Sur

[Roland Haas]

Hello Maria,

> I've been trying to compile the new stable version of the ETK Lorentz
> on osx Big Sur and I got all kinds of problems.
This is x86 or M1?

I could compile Lorentz fine on OSX BigSur (x86 in a VM) using both
macports and homebrew. 

Note that both might have updated their default compilers (to gcc-11)
since you last tried.

The instructions to compile are in the jupyter notebook:

https://github.com/nds-org/jupyter-et/blob/master/CactusTutorial.ipynb

I just tried following those instructions on BigSur 11.4, HomeBrew, both
freshly updated and things worked ok (taking into account the bugfix in
https://bitbucket.org/einsteintoolkit/tickets/issues/2537/sim-setup-silent-produces-float-values-for ).

Here's my OS information and installed packages:

% sw_vers
ProductName:    macOS
ProductVersion: 11.4
BuildVersion:   20F71

% brew list --versions
apr 1.7.0_2
apr-util 1.6.1_3
fftw 3.3.9_1
gcc 11.1.0_1
gettext 0.21
gmp 6.2.1
gsl 2.7
hdf5 1.12.0_4
hwloc 2.4.1
isl 0.24
jpeg 9d
libevent 2.1.12
libmpc 1.2.1
lz4 1.9.3
mpfr 4.1.0
open-mpi 4.1.1_2
openssl at 1.1 1.1.1k
pkg-config 0.29.2_3
readline 8.1
sqlite 3.35.5
subversion 1.14.1_2
szip 2.1.1_1
utf8proc 2.6.1
zstd 1.5.0


Yours,
Roland

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