baude e89bbd6068 make varlink optional for podman ... some platforms and operating systems do not have varlink. in those cases, we need to be able to turn off enablement of varlink in podman. this can now be done with BUILDTAGS passed to the build though perhaps in the future will be better. the default is to build with varlink Signed-off-by: baude <bbaude@redhat.com> squash! make varlink optional for podman The API.md and cmd/podman/varlink/ioprojectatomicpodman.go targets will continue to work regardless of the presence (or not) of 'varlink' is in BUILDTAGS. However, cmd/podman/varlink/ioprojectatomicpodman.go is now only required by the podman target when BUILDTAGS contains 'varlink'. API.md had also been an podman dependency since 5b2627dd (Makefile: Drop find-godeps.sh for podman target, 2018-05-15, #776) when I expanded varlink_api_generate. It had been an indirect podman dependency (via varlink_api_generate) since 25263558 (Generate varlink API documentation automatically, 2018-05-07, #734). But the podman executable obviously doesn't depend on the Markdown file, so I'm removing that dependency here. Signed-off-by: baude <bbaude@redhat.com> squash! make varlink optional for podman The command-pointer approach will scale well if/when we add additional optional commands behind their own build tags, because those tags won't all be competing for the same getOptionalCommands namespace. Signed-off-by: W. Trevor King <wking@tremily.us> Closes: #987 Approved by: rhatdan		2018-06-24 10:54:40 +00:00
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podman	make varlink optional for podman	2018-06-24 10:54:40 +00:00