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# Contributing to stupidtools
The project is a GNU AutoTools replacement: read a KDL build file, emit a
POSIX-sh `./configure`. Contributions should follow the rules in AGENTS.md.
This file covers the mechanics.
## Build
stupidtools bootstraps itself with autotools:
```
autoreconf -ivf
./configure
make
```
You need a C23-capable compiler (GCC >= 14 or Clang >= 18) and autotools.
The build compiles with `-std=c23 -Wall -Wextra -Wpedantic`.
## Test
```
make check # unit tests via the vendored single-header C test framework
tests/run.sh # shell integration tests (exact exit codes + grep-able markers)
```
TDD workflow: write the test alongside the code. Implementation + test is one
unit of work, never separated.
## Commit
Conventional commits, one per logical change:
- `build:` build system, toolchain flags
- `feat(kdl):` lexer, parser, values, schema
- `feat(detect):` check registry, probes, feature resolution
- `feat(gen):` configure generator, config.status/log/h, argument parsing
- `feat(ext):` extension ABI, Lua embed, discovery
- `test:` tests
- `docs:` documentation
- `chore:` vendoring, misc
Never bundle two logical changes in one commit. Never commit generated
artifacts (`configure`, `Makefile`, `config.h`, `config.status`, `config.log`).
## Vendoring policy
Every third-party library is vendored in-tree under `thirdparty/<name>/`:
- the upstream `LICENSE` file (never omitted, never stubbed),
- an `UPSTREAM` file recording the source URL and the pinned upstream commit
SHA,
- a row in the `thirdparty/README.md` provenance table (name, version, license,
SHA).
No git submodules. If it is not vendored this way, it does not exist.