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This commit is relatively major refactoring of the `openssl-sys` crate as well
as the `openssl` crate itself. The end goal here was to support OpenSSL 1.1.0,
and lots of other various tweaks happened along the way. The major new features
are:
* OpenSSL 1.1.0 is supported
* OpenSSL 0.9.8 is no longer supported (aka all OSX users by default)
* All FFI bindings are verified with the `ctest` crate (same way as the `libc`
crate)
* CI matrixes are vastly expanded to include 32/64 of all platforms, more
OpenSSL version coverage, as well as ARM coverage on Linux
* The `c_helpers` module is completely removed along with the `gcc` dependency.
* The `openssl-sys` build script was completely rewritten
* Now uses `OPENSSL_DIR` to find the installation, not include/lib env vars.
* Better error messages for mismatched versions.
* Better error messages for failing to find OpenSSL on a platform (more can be
done here)
* Probing of OpenSSL build-time configuration to inform the API of the `*-sys`
crate.
* Many Cargo features have been removed as they're now enabled by default.
As this is a breaking change to both the `openssl` and `openssl-sys` crates this
will necessitate a major version bump of both. There's still a few more API
questions remaining but let's hash that out on a PR!
Closes #452
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to pkg-config.
Also bump version minors for publishing. :)
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Also removed the PNaCl support. It hasn't worked anyway in a while since
the pnacl-libressl-sys library doesn't have any of the FFI bindings and
makes openssl's Cargo.toml a mess.
This is a minor version bump since Hasher's API changed
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Although wrapping was relatively easy it basically meant
that we depend on C compilation which becomes nightmare
as soon as multiple platforms are used. I’ve got a huge pain
once iOS was involved with 3 device archs and 2 simulator
arches to support, not mentioning different set of include
and lib flags.
So there are 2 different approaches:
- continue this way, maintaining all compilation issues like
like managing correct flags, providing correct paths and so
on. This way our Makefile will grow extremely fast and will
actually take more efforts to maintain.
- doing it pure Rust way. In this case we provide all the
macros expansions inside our wrappers and there should be
no other way to access raw data other than through those
wrappers. It might be fragile if OpenSSL internal data
structures will ever change, but I think (or hope) it is
pretty stable and wouldn’t change anytime soon.
This PR eliminates `BN_is_zero` at all from public API. It’s
functionality is implemented in `BigNum.is_zero` and should
be enough.
Additional notes:
1. I’ve moved BIGNUM into `bn` so it could access fields
directly and keep it as an opaque structure for everyone
else
2. I’ve kept empty Makefile as I hope to land `feature-matrix`
branch soon and I don’t like merging deleted/added file
conflicts.
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This is necessary because on some architectures BN_is_zero
is a CPP macro, so trying to link against it in an `extern "C"`
block causes a linker error.
This also introduces a build command to Cargo to compile
the bn_is_zero wrapper.
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