https://trac.sagemath.org/ticket/33316 that’s what happened. Support for gcc lower than 6.3 removed. I don’t know if you can get a newer gcc from that ubuntu.
> On 22/06/2022, at 22:56, John Cremona <john.crem...@gmail.com> wrote: > > On a machine (Ubuntu 16.04.7 LTS) on which I have done a lot of Sage > development before, and successfully built sage from source, from > scratch, just a month ago (May 17 when 9.6 was released) with no > problems. > > Now, I made a new clone of the source using > > git clone https://github.com/sagemath/sage.git > cd sage > > then ran > > ./bootstrap > > and then > > ./configure > > but configure gave some error messages. In the long list, I see > > gcc-11.3.0: no suitable system > package; this is an error > > and at the end: > > configure: error: > > Given --with-system-gcc=force, but no system package could be used. > That's an error. Please install the indicated package to continue. > (To override this error, use ./configure --without-system-gcc) > > Now this system certainly has a working gcc, it is > gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) > > Also, So, what has changed since then? > > John > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/CAD0p0K79NBC7Hv49MNY9keGR-siU0xfOnmJ2Ab%2B54FUXgpxwhg%40mail.gmail.com. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/DA2BF98B-B926-4F70-A597-CCEC9B44749C%40gmail.com.
