I gather openblas has moved to 10.8 from 10.6, see https://github.com/xianyi/OpenBLAS/issues/1580
Realistically, 10.9 is OK too, I don't think it's actually possible to build current Sage on anything older than 10.11 or so... On Fri, Mar 8, 2019 at 9:42 AM Jeroen Demeyer <j.deme...@ugent.be> wrote: > > Hello, > > While working on cysignals, I encounted an issue with > $MACOSX_DEPLOYMENT_TARGET. I have a fix, but I don't know if it's good. > It's not specific to Sage, but it will affect Sage since cysignals is a > Sage package. > > For cysignals, I'd really like to use MACOSX_DEPLOYMENT_TARGET >= 10.9 > since that enables the C++ <atomic> header (*) which is needed to fix > Sage ticket #24288. The tricky part is that not only cysignals itself > should be compiled with MACOSX_DEPLOYMENT_TARGET >= 10.9 but also every > package using cysignals. > > I have a solution which adds the command-line flag > -mmacosx-version-min=10.9 when compiling cysignals: > https://github.com/sagemath/cysignals/commit/17062a64bf5672375982cf295ed93b346b55d680 > Thanks to Cython magic, this flag will be passed on to every package > that cimports cysignals. > > This solution seems to work and passes CI tests. These tests are done > using Conda, which uses a Python compiled with > MACOSX_DEPLOYMENT_TARGET=10.6, which is then used for every Python > package (analogous to CFLAGS, distutils uses the value for > MACOSX_DEPLOYMENT_TARGET which was used to compile Python). > > So my question is basically: what could possibly go wrong? One thing > which worries me is that the command-line flag -mmacosx-version-min=10.9 > overrides the environment variable MACOSX_DEPLOYMENT_TARGET. So if > somebody really wanted a higher value for MACOSX_DEPLOYMENT_TARGET than > 10.9, it wouldn't work. But I see no solution for this. > > > Jeroen. > > > (*) For some reason, the analogous C header <stdatomic.h> works > regardless of MACOSX_DEPLOYMENT_TARGET. Unfortunately, this header is > not compatible with C++, so I really need <atomic>. > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
