It looks like Heroku will soon have native support for PyPy 2.3.1: https://github.com/heroku/heroku-buildpack-python/issues/139
Alex On Thu, Jul 17, 2014 at 7:51 AM, Yury V. Zaytsev <y...@shurup.com> wrote: > On Thu, 2014-07-17 at 15:10 +0200, Armin Rigo wrote: > > > > Thanks for the explanations! And, just to be complete, may I ask how > > PyPy finds the other libraries it needs, > > Excellent question for a PyPy developer; to be honest, I actually have > very little idea :-) > > I guess it just adds the -l / -L / -I flags (discovered either by > checking a pre-defined set of paths, or by running pkg-config) and hopes > that all the right libraries are installed and headers are at the > correct place, and blows up otherwise. > > It seems from a cursory grep that the Makefile writing logic is here: > > pypy/pypy/rpython/translator/platform > > Specifically, see posix.py and linux.py. > > > and how in general project X finds library Y that it depends on? > > The build systems usually try pkg-config, then a list of pre-defined > locations and flags. Then a dummy executable is compiled, linked and > run. If it works, everything is great, if not, it complains and/or > disables the dependency. > > Now, this has to do with building, but as we've established, the > buildpacks don't actually build anything, but rather unpack pre-compiled > binaries. In this case, it's a dynamic linker thing. In brief, it looks > for libraries in RPATH / LD_LIBRARY_PATH and standard locations. > > Does this make sense to you? > > > I still fail to see why we're discussing libffi specifically here... > > Actually, I'm not sure about that either :-) > > Maybe the machines provided by Heroku already have all other libraries > that the binaries of PyPy that you provide via the buildbot are > dynamically linked against, and so libffi is the only problematic one... > > -- > Sincerely yours, > Yury V. Zaytsev > > > _______________________________________________ > pypy-dev mailing list > pypy-dev@python.org > https://mail.python.org/mailman/listinfo/pypy-dev > -- "I disapprove of what you say, but I will defend to the death your right to say it." -- Evelyn Beatrice Hall (summarizing Voltaire) "The people's good is the highest law." -- Cicero GPG Key fingerprint: 125F 5C67 DFE9 4084
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