Apron wrapper for PPLite 0.12.

[ezaffanella]

PPLite version 0.12 no longer depends on gmpxx (the C++ interface of GMP).

Note: we also applied a minor renaming to newpolka matrix_* type and functions (adding prefix "pk_") so as to avoid a few name clashes with version 3 of the FLINT library, which is a required dependency of PPLite. Both newpolka and FLINT v.3 have functions named "matrix_clear" and "matrix_equal", thereby preventing static linking of Apron and PPLite when using the newer version of FLINT. Fix contributed by Michele Spotti.

[antoinemine]

Thanks for the PR!

I tried it although I still havePPLite 0.11 (not 0.12) and I get errors in pplite_user.hh:

In file included from pplite_user.cc:16:
pplite_user.hh: In function 'void pplite::apron::to_scalar(ap_scalar_t*, const pplite::Integer&)':
pplite_user.hh:50:5: error: 'const pplite::Integer' {aka 'const class pplite::FLINT_Integer'} has no member named 'get_mpz'
   50 |   i.get_mpz(mpq_numref(s->val.mpq));
      |     ^~~~~~~
pplite_user.hh: In function 'void pplite::apron::to_scalar(ap_scalar_t*, const pplite::Integer&, const pplite::Integer&)':
pplite_user.hh:59:5: error: 'const pplite::Integer' {aka 'const class pplite::FLINT_Integer'} has no member named 'get_mpz'
   59 |   n.get_mpz(mpq_numref(s->val.mpq));
      |     ^~~~~~~
pplite_user.hh:60:5: error: 'const pplite::Integer' {aka 'const class pplite::FLINT_Integer'} has no member named 'get_mpz'
   60 |   d.get_mpz(mpq_denref(s->val.mpq));
      |     ^~~~~~~
pplite_user.hh: In function 'void pplite::apron::to_scalar(ap_scalar_t*, const pplite::Rational&)':
pplite_user.hh:68:5: error: 'const pplite::Rational' {aka 'const class pplite::FLINT_Rational'} has no member named 'get_mpq'
   68 |   r.get_mpq(s->val.mpq);
      |     ^~~~~~~

Is this expected? Do you have a plan so that the binding works with both versions 0.11and 0.12, or would it be unadvisable?

[ezaffanella]

It was expected, as the PPLite's interface has changed.
But you are right: we should detect the PPLite's version at configuration time and add a few (conditionally compiled) helpers to make it work for both 0.11 and 0.12. We will provide an updated PR.

[antoinemine]

Thanks, that'd be perfect! Alternatively, if it makes more sense to make it work only for 0.12, it's also OK, but the configure should nevertheless check the PPLite version and disable PPLite support if an earlier version is detected.

[antoinemine]

Thanks!
In get_pplite_version, I think that you need to change $cxx into $cxx $cxxflags $deps (both time).

[antoinemine]

Sorry, another thing: I think that PPLITE_PREFIX should be pplite_prefix in get_pplite_version, as it is the output of checkprefix (which may contain PPLITE_PREFIX if specified, but might discover another working prefix even if PPLITE_PREFIX is empty).

[ezaffanella]

Done, thank you.

[antoinemine]

Thank you very much! I think this is ready to be merged.