Your build might be problematic due to presence of anaconda3 in your building environment (in paricular some header files might be coming from there).
Installation docs of Sage ought to say something about (ana)conda in this respect. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.