That's a fair point. I guess it's a bit more relevant at the moment since homebrew python is, at least for the time being, no longer suitable and system python3 is only 3.8. So for people who have homebrew python installed they can't get python 3.9 in sage 9.3 unless they build from source.
In any case, it seems prudent to try to figure out what's going on with MACOSX_DEPLOYMENT_TARGET. I'll try to investigate to the best of my ability, but I wonder if the problems that led to setting it to 10.9 ten years ago are still relevant today. On Thursday, January 14, 2021 at 4:44:09 AM UTC-5, Dima Pasechnik wrote: > > > > On Thu, 14 Jan 2021, 00:52 Zachary Scherr, <[email protected] <javascript:>> > wrote: > >> I've been trying to help out with getting sage to work properly on Mac, >> and I was curious if anyone can explain the purpose of >> SAGE_MACOSX_DEPLOYMENT_TARGET to me. >> >> I don't know autoconf at all, but I find that if I configure with >> --with-system-python3=no >> then SAGE_MACOSX_DEPLOYMENT_TARGET gets set to "legacy". This is >> presumably because of the lines >> >> AS_IF([test x$sage_spkg_install_python3 = xno], >> [PYTHON_FOR_VENV="$ac_cv_path_PYTHON3"], >> [SAGE_MACOSX_DEPLOYMENT_TARGET=legacy]) >> AC_SUBST([PYTHON_FOR_VENV]) >> AC_SUBST([SAGE_MACOSX_DEPLOYMENT_TARGET]) >> >> located in build/pkgs/python3/spkg-configure.m4. >> >> As far as I can tell, this leads to all sorts of warnings when doctesting >> sage. >> > > I would treat the very idea of not using an already installed python3 as a > legacy option. > > But yes, the issue is related to the correct setting of > MACOSX_DEPLOYMENT_TARGET > - something that only Apple itself understands well :-) > > > Specifically, I get lots of warnings like: >> >> ld: warning: dylib (/usr/local/lib/libmpfr.dylib) was built for newer >> macOS version (10.15) than being linked (10.9) >> ld: warning: dylib (/usr/local/lib/libgmp.dylib) was built for newer >> macOS version (10.15) than being linked (10.9) >> ld: warning: dylib (/usr/local/lib/libgmpxx.dylib) was built for >> newer macOS version (10.15) than being linked (10.9) >> ld: warning: dylib (/usr/local/lib/libgsl.dylib) was built for newer >> macOS version (10.15) than being linked (10.9) >> ld: warning: dylib (/usr/local/lib/libntl.dylib) was built for newer >> macOS version (10.15) than being linked (10.9) >> >> now I believe that this is caused by src/bin/sage-env which has the >> following code: >> >> if [ "$UNAME" = "Darwin" ]; then >> export MACOSX_VERSION=`uname -r | awk -F. '{print $1}'` >> case "$SAGE_MACOSX_DEPLOYMENT_TARGET" in >> legacy) >> # legacy behavior of the Sage distribution. >> # set MACOSX_DEPLOYMENT_TARGET -- if set incorrectly, this can >> # cause lots of random "Abort trap" issues on OSX. see trac >> # #7095 for an example. >> if [ $MACOSX_VERSION -ge 14 ]; then >> # various packages have still have issues with >> # two digit OS X versions >> MACOSX_DEPLOYMENT_TARGET=10.9 >> else >> MACOSX_DEPLOYMENT_TARGET=10.$[$MACOSX_VERSION-4] >> fi >> export MACOSX_DEPLOYMENT_TARGET >> ;; >> "") >> # Do nothing >> ;; >> *) >> # A fixed version set at configure time. >> export MACOSX_DEPLOYMENT_TARGET=$SAGE_MACOSX_DEPLOYMENT_TARGET >> ;; >> esac >> >> and I'm trying to understand where all of this is coming from. The trac >> ticket this references is 11 years old and so I'm not sure it's an issue >> any more. >> >> -- >> 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 [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sage-devel/19afd68d-be22-4a98-a3e7-c694fc6135a8n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/sage-devel/19afd68d-be22-4a98-a3e7-c694fc6135a8n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/858b4e3b-35aa-4ee5-8932-678d9d25e9b3o%40googlegroups.com.
