- add -lm (el_runtime.c uses pow/sqrt/log/sin/cos/exp)
- add -Wl,--allow-multiple-definition to gen2 (is_digit/is_whitespace
defined in both elc-bootstrap.c and el_runtime.c; bootstrap predates
the text-processing primitives commit)
- remove colon from Self-host step name (Gitea YAML parser rejects it)
- replace em dashes in step names with hyphens
Will Anderson