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I have just tried to upgrade my main Sage install from 8.7 to 8.8, but the optional package Giacpy_sage fails to build. The logs mention several errors reported by gcc – the log file is attached. This is on OS X 10.13.6 with Clang 10.0.0, but I have observed this problem on a Linux machine as well (where I also tried a clean install, but the package still does not build). This is odd, as Giacpy_sage has not been changed since 8.7.
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Fri 2019-06-28 16:27:59 UTC, Markus Wageringel:
Unless you depend critically on the few parts of Sage that have not
yet been made to work with Python 3, why not build Sage for Python 3?
To do that, instead of 'make', type
make configure
./configure --with-python=3
make
Markus Wageringel
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Jun 28, 2019, 3:54:39 PM6/28/19
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Oh, I do that for developing. Yet, although I am looking forward to using Python 3, I prefer to have a reliable stable install as well. I had some trouble with compiling the betas a few times in the past when I ended up without a working copy of Sage. The full compilation process takes hours on my laptop, so I usually try to avoid it.
François Bissey
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Jun 28, 2019, 4:27:19 PM6/28/19
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Fill a bug on the tracker. giacpy_sage is using CC when it should use CXX with c++11
standard options. This is why it is failing
1) compile with gcc instead g++
2) complaints about the use c++11 “extensions” which of course shouldn’t be available
from plain “gcc”.