This was introduced in 9d40c7464e, which added
support for `SOURCE_DATE_EPOCH` to override the build-time.
macOS uses the BSD flavor of `date`, which does not support the `--date` option
to set a custom time.
Before this:
DISABLE_WARN_OUTSIDE_CONTAINER=1 make binary
./scripts/build/binary
date: illegal option -- -
usage: date [-jnRu] [-d dst] [-r seconds] [-t west] [-v[+|-]val[ymwdHMS]] ...
[-f fmt date | [[[mm]dd]HH]MM[[cc]yy][.ss]] [+format]
After this:
DISABLE_WARN_OUTSIDE_CONTAINER=1 make binary
./scripts/build/binary
Building static docker-darwin-amd64
+ go build -o build/docker-darwin-amd64 -tags ' osusergo pkcs11' -ldflags ' -w -X "github.com/docker/cli/cli/version.GitCommit=a4b6fe16a" -X "github.com/docker/cli/cli/version.BuildTime=2022-04-06T10:57:25Z" -X "github.com/docker/cli/cli/version.Version=20.10.2-589-ga4b6fe16a.m"' -buildmode=pie github.com/docker/cli/cmd/docker
...
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
72ed7bd3e9