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Currently, we support ccache as the compiler cache. Since it is transparent, nothing much is needed to support it. This series adds support to sccache[1] and prefers it over ccache when it is installed. sccache brings the following benefits over ccache: 1. Integrated distributed build support similar to distcc, but with automatic toolchain packaging and a scheduler 2. Rust support 3. C++20 modules (upcoming[2]) It is the C++20 modules support that motivates the series. C++20 modules have the potential to reduce build times, but without a compiler cache and distributed build support, they come with too large a penalty. This removes the penalty. The series detects that sccache is installed, selects it if so (and if not overridden by a new option), enables it for C++ and Rust, and disables ccache transparent caching if sccache is selected. Note: this series doesn't add sccache to the frozen toolchain or add dbuild support. That is left for later. [1] https://github.com/mozilla/sccache [2] https://github.com/mozilla/sccache/pull/2516 Toolchain improvement, won't be backported. Closes scylladb/scylladb#27834 * github.com:scylladb/scylladb: build: apply sccache to rust builds too build: prevent double caching by compiler cache build: allow selecting compiler cache, including sccache
Scylla in-source tests.
For details on how to run the tests, see docs/dev/testing.md
Shared C++ utils, libraries are in lib/, for Python - pylib/
alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool
If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).
To add a new folder, create a new directory, and then
copy & edit its suite.ini.