1 Welcome, contributor, to the Why3 verification platform!
3 If you wish to contribute, open an issue or otherwise interact with our [Gitlab](https://gitlab.inria.fr/why3/why3), you will need to have an Inria account.
4 External users can file bug reports using our [mailing list](mailto:why3-club@groupes.renater.fr). We are sorry for the inconvenience.
8 To build Why3 locally you will need a functional installation of OCaml (at least 4.08), `menhir`, `zarith`, and `autoconf`. You can set up your developer build using the following commands:
12 ./configure --enable-local # stores the built binaries under ./bin
16 ## Building Documentation
18 Building the Why3 documentation requires an installation of Sphinx, as well as the `sphinxcontrib-bibtex` package. If your package manager does not have up to date versions of these packages, or they otherwise fail to install, you can install them using `pip3` as follows:
21 pip3 install sphinx sphinxcontrib-bibtex
24 You will need to re-configure Why3 to enable documentation building. Once it has been configured, documentation can be built by running `make doc`.
28 To execute the Why3 tests run:
34 ## Running specific tests
36 You may run specific classes of tests by specifying them on the command line.
37 The full listing of classes can be obtained from `-help`.
39 For example to run the 'good file' and 'bad file' tests, use:
42 ./bench/bench goodfiles badfiles
47 Every new commit pushed on the gitlab repository invokes an continuous
48 integration check. The description on how to upgrade this CI procedure
49 is specifically done in `misc/ci.md`
51 ## Adding new test suites
53 To add a new directory of tests add a new line in `bench/bench`. The suite should be added to the relevant block, which is determined by the kind of assertion it performs. For example, if you wished to add a set of files which should successfully prove, add a line like `goods path/to/tests` to the appropriate block.
55 Certain tests, those in `examples/`, `examples/bts`, `examples/programs` and `examples/check-builtin` are replayed every night on Moloch. To ensure accuracy and avoid flakiness, the sessions for these tests must be created on Moloch as well.
59 Every night, the latest master is tested against a series of standard
60 configurations, on Moloch (`moloch.lri.fr`). This ensures that
61 regressions are caught across a wide array of different prover
62 versions and families. The results of Nightly CI are emailed to a set
63 of selected developers emails each morning.
65 If you require access to Moloch in order to update sessions or test a new prover, ask one of the maintainers for help.
69 Why3 uses a Pull Request development model. Contributions should be made to separate branches and a Merge Request should be opened in Gitlab, explaining the contents and purpose of its contents.
71 While code review is not strictly enforced it is *highly* encouraged.
76 - Compile, and pass CI.
77 - Be stripped of trailing whitespace.
78 - Use appropriate indentation.
79 - Be limited to 80 columns.
80 - Have a clear and relevant commit message
81 - Be as functionally isolated as possible
83 # Contributing to counterexamples generation and checking
85 The module `src/core/model_parser` contains the main data structure
88 Parser functions for counterexamples must be declared in driver files
89 (e.g. declaring `model_parser "smtv2"` somewhere). Such functions
90 should first be registered using `Model_parser.register_model_parser`.
91 The latter function takes as input a so-called `raw_model_parser`
92 (e.g. `Smtv2_model_parser.parse`). This `raw_model_parser` is an
93 input of the internal function `Model_parser.model_parser`, which is
94 the main function for counterexamples generation. A
95 `raw_model_parser` is a function that processes a solver textual
96 output and produces a preliminary structure for counterexamples, which
97 is completed by `Model_parser.model_parser`.
99 So, as mentioned above, an example of a `raw_model_parser`, for SMTv2
100 solvers, is `Smtv2_model_parser.parse`, which makes use of another
101 data type `Smtv2_model_defs.function_def`. This specific
102 `Smtv2_model_parser.parse` function proceeds in 2 main phases:
103 - first transforms the textual output into an S-expression,
104 - then the latter S-expression is transformed into a
105 `Model_parser.model_element list`.
107 The `raw_model_parser` functions are using the variable names as
108 printed by the printer. It is only the `Model_parser.build_model_rec`
109 function that recovers the original Why3 name from the
110 `printing_info`. The type `printing_info` is declared in module
111 `src/core/printer`. Task printers are taking as arguments a record of
112 type `Printer.printer_args`. The field `printing_info` is supposed to
113 be modified in place by printers.
117 Profiling execution of Why3 can be performed out-of-the-box using
118 under Linux using `perf`. A typical usage is
121 perf record --call-graph=dwarf -- why3 command <options> <arguments>
124 Note that perf may complain you don't have enough priviledges. A typical configuration change required is, for the session only, execute
126 sysctl kernel.perf_event_paranoid=2
128 or, to make this setting permanent, add the line
130 kernel.perf_event_paranoid = 2
132 to `sys/sysctl.conf`.