Thanks, I tried that and it didn't work. I also tried cloning the
matplotlib repository in git and adding the following to setup.py
os.environ['CC'] = clang
os.environ['OBJC'] = clang
Build and installation ran successfully, but when I try to use matplotlib I
get the following
terminate called after throwing an instance of 'std::runtime_error'
what(): Could not set the fontsize
------------------------------------------------------------------------
0 signals.so 0x000000010afdef85 print_backtrace
+ 37
------------------------------------------------------------------------
Unhandled SIGABRT: An abort() occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------
I am not sure what I else I can try...
On Friday, November 10, 2017 at 11:38:24 AM UTC-8, François Bissey wrote:
>
> This complains about objective-C. Try
> CC=clang OBJC=clang
>
> François
>
> On Friday, November 10, 2017 at 12:35:48 PM UTC+13, Ahmed Allibhoy wrote:
>>
>> Hi,
>>
>> I am trying to install matplotlib on sage with the OSX backend so I can
>> get interactive plots. Using
>>
>> sage -pip install -U matplotlib
>>
>> fails with the error:
>>
>> building 'matplotlib.backends._macosx' extension
>> gcc -fno-strict-aliasing
>> -I/Applications/SageMath/local/var/tmp/sage/build/python2-2.7.13.p1/include
>> -DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused -I/usr/local/include
>> -I/usr/include -I/usr/X11/include -I/opt/X11/include -I.
>> -I/Applications/SageMath/local/include/python2.7 -c src/_macosx.m -o
>> build/temp.macosx-10.9-x86_64-2.7/src/_macosx.o
>> gcc: error: src/_macosx.m: Objective-C compiler not installed on this
>> system
>> error: command 'gcc' failed with exit status 1
>>
>> I suspect that this is due to using gcc rather than clang to compile
>> matplotlib. Setting CC=clang doesn't fix the issue, however, and I am
>> unsure of how to build using clang. Does anyone know of a work around?
>>
>>
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