docs/building.md sent a reader to TODO.md for what a stdlib replacement must provide; the AKERR_USE_STDLIB=OFF build does not compile at all, which is issue #12, so it says that instead. Found while sweeping the consumer repositories: the handler macros trip -Wimplicit-fallthrough, which is why libakgl cannot adopt -Wextra. That was recorded only in libakgl and is now issue #18 -- the fourth defect in this library found written down in a consumer rather than here. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Co-Authored-By: Andrew Kesterson <andrew@aklabs.net>