2 Commits

Author SHA1 Message Date
Julien Olivain
fa98239074 utils/check-symbols: allow BR2_BROKEN to be unused
Commit [1] introduced the BR2_BROKEN hidden symbol. The intent of
this symbol is to temporarily mark a configuration known to be broken.
This commit was added to fix an undefined usage of the symbol, in a
previous commit [2].

With this somewhat special symbol, it is also perfectly normal to
have no use of it.

Running the command "utils/check-symbols" in a state there is no usage
of the BR2_BROKEN, the script fails with output:

    Config.in:15: BR2_BROKEN defined but not referenced

This commit adds an exception for this symbol, allowing it to be
unused in the whole Buildroot tree.

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/8925433382

[1] 2ddc5808cd
[2] 11a8cdd2bb

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
2025-02-05 11:01:05 +01:00
Ricardo Martincoski
0c5472ace2 utils/check-symbols: new script
This script checks for inconsistencies on symbols declared in Config.in
and used in .mk files.
Currently it checks only symbols following the pattern BR2_\w+ .

The script first gets the list of all files in the repository (using git
ls-files like 'make check-flake8' already do).

Then it parses all relevant files, searching for symbol definitions and
usages, and add entries into a database.

At the end, the database is searched for inconsistencies:
- symbol that is part of "choice" and is referenced with "select";
- legacy symbol being referenced in packages;
- legacy symbol being redefined in packages;
- symbol referenced but not defined;
- symbol defined but not referenced;
- legacy symbol that has a Note stating it is referenced by a package
  (for legacy handling) but is referenced in the package without a
  comment "# legacy";
- legacy symbol that has a Note stating it is referenced by a package
  but it is not actually referenced.

There is also a debug parameter --search that dumps any filename or
symbol entries from the database that matches a regexp.

Sample usages:
$ utils/check-symbols
$ utils/docker-run utils/check-symbols
$ utils/check-symbols --search 'GETTEXT\b|\/openssl'

At same time the script is created:
- add unit tests for it, they can be run using:
  utils/docker-run python3 -m pytest -v utils/checksymbolslib/
- add two more GitLab CI jobs: check-symbols (to check current tree
  using the script) and check-check-symbols (to check the script against
  its unit tests)

Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
[Peter: print warnings to stderr, rename change_current_dir() to
	change_to_top_dir()]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2023-02-06 16:30:20 +01:00