On Oct 15, 2019, at 04:54, Inada Naoki <songofaca...@gmail.com> wrote: > I want Homebrew uses `--enable-optimizations` and `--with-lto` option > for building Python. But maintainer said: > >> Given this is not a default option, probably not, unless it is done in >> upstream (“official”) binaries. > > https://github.com/Homebrew/homebrew-core/pull/45337 > > Are these options used for official macOS binaries? > Is there official information about the build step of official binaries?
We currently do not use those options to build the binaries for the python.org macOS installers. The main reason is that the Pythons we provide are built to support a wide-range of macOS releases and to do so safely we build the binaries on the oldest version of macOS supported by that installer. So, for example, the 10.9+ installer variant is built on a 10.9 system. Some of the optimization features either aren't available or are less robust on older build tools. And I believe it is more important for the python.org macOS installers to continue to provide a single installer that is usable on many systems and can be used in a broad range of applications and by a broad range of users rather than trying to optimize performance for a specific application: you can always build your own Python. As far as what other distributors of Python for macOS do, what we do shouldn't necessarily constrain them. I don't see any problem with Homebrew optimizing for a particular user's installation. I see that MacPorts, another distributor of Python on macOS, provides a non-default variant that uses --enable-optimizations. https://github.com/macports/macports-ports/blob/master/lang/python37/Portfile -- Ned Deily n...@python.org -- [] _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/HJXKYD62KBTYMNBSAMEZHWXSC6FH7PVO/ Code of Conduct: http://python.org/psf/codeofconduct/
