ASAN wasn't able to keep track of `boost::coroutine` context switches, and would lead to many false positives being detected. By switching to `boost::coroutine2` and `ucontext`, ASAN is able to know about the context switches advertised by the `boost::fiber` class, which in turn leads to more cleaner ASAN analysis.
In certain cases, such as when modifying headers used by many compilation units, performing a unity build is slower than when performing a regular build with `ccache` enabled. There is also a benefit to a unity build in that it can detect things such as macro redefinitions within the group of files that are compiled together as a unit. This change therefore restores the ability to perform unity builds. However, instead of running every configuration with and without unity enabled, it is now only enabled for a single configuration to maintain lower computational use.
As part of restoring the code, it became clear that currently two configurations have coverage enabled, since the check doesn't focus specifically on Debian Bookworm so it also applies to Debian Trixie. This has been fixed too in this change.
Unity builds were intended to speed up builds, by bundling multiple files into compilation units. However, now that ccache is available on all platforms, there is no need for unity builds anymore, as ccache stores compiled individual build objects for reuse. This change therefore removes the ability to make unity builds.
This change removes unnecessary version numbers in the OpenSSL and Boost `find_package` CMake statements. An unnecessary OpenSSL definition is removed, while Conan options for SSL are updated to disable insecure ciphers. Moreover, the statements are now ordered alphabetically and more logically.
This PR updates protobuf and grpc to their latest versions. The latest protobuf version no longer requires patches, so we can use it directly from the official Conan Center Index, while the latest grpc still needed a patch, which was added to our own Conan Center Index fork in XRPLF/conan-center-index#8.
This change substitutes the secp256k1 source code copy by the Conan recipe added in XRPLF/conan-center-index#24, which updates the version of the library to 0.7.0.
This change downgrades OpenSSL 3.6.0 to 3.5.4. To avoid potential zero-day issues in a new major version of OpenSSL, 3.6.0, it is safer to stick with 3.5.4. While 3.6.0 has some nice new features, such as improved SHA512 hashing, it also introduces new features that could contain bugs. In contrast, 3.5.4 has seen quite a few bug fixes over 3.5.0 and has been used in the wild for a while now.
This change reverts #5617, because it will require extensive testing that will take up more time than we have before the next scheduled release.
Reverting this change does not mean we are abandoning it. We aim to pick it back up once there's a sufficient time window to allow for testing on multiple distros running a mixture of OpenSSL 1.x and 3.x.
