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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>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches