make: build without code gen by default

[matzf]

By default, make (or make build) only builds.
An explicit make all will additionally run all the code-generation
steps for the checked-in generated code, in the right order.

For the protobuf code generation step, the multiple bazel invocations
are combined to both improve readablity of the Makefile and the output,
and to make make run quiter.

Note that the order of the code generation steps is different than
before; previously protobuf forced itself to run before generating
go_deps.bzl -- this doesn't seem to make sense as the protobuf code
generation will never automatically affect the go.mod file. The other
way around is more conceivable, changes to go.mod propagating to
go_deps.bzl and so affecting the protobuf code generation.
Additionally, all now also includes the licenses target, just for
good measure.

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This change is 

[lukedirtwalker]

Reviewed 3 of 3 files at r1.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @matzf)

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Makefile, line 32 at r1 (raw file):

protobuf:
	bazel build //go/pkg/proto/control_plane:proto_srcs \

ok since you started simplifying I think we can go further:

	bazel build --output_groups=go_generated_srcs //go/pkg/proto/...
	rm -f go/pkg/proto/*/*.pb.go
	cp -r bazel-bin/go/pkg/proto/*/go_default_library_/github.com/scionproto/scion/go/pkg/proto/* go/pkg/proto
	chmod 0644 go/pkg/proto/*/*.pb.go

and then in BUILD.bazel files you can delete the filegroup and pkg_tar invocations (also don't forget to remove the load(pkg_tar)

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Makefile, line 50 at r1 (raw file):

mocks:
	./tools/gomocks
	bazel run //:gazelle -- update -mode=$(GAZELLE_MODE) -index=false -external=external -exclude go/vendor -exclude docker/_build $(GAZELLE_DIRS)

delete this line it's not needed anymore. tools/gomocks manages it correctly

[matzf]

Reviewable status: 2 of 8 files reviewed, 2 unresolved discussions (waiting on @lukedirtwalker)

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Makefile, line 32 at r1 (raw file):

Previously, lukedirtwalker (Lukas Vogel) wrote…

ok since you started simplifying I think we can go further:

	bazel build --output_groups=go_generated_srcs //go/pkg/proto/...
	rm -f go/pkg/proto/*/*.pb.go
	cp -r bazel-bin/go/pkg/proto/*/go_default_library_/github.com/scionproto/scion/go/pkg/proto/* go/pkg/proto
	chmod 0644 go/pkg/proto/*/*.pb.go

and then in BUILD.bazel files you can delete the filegroup and pkg_tar invocations (also don't forget to remove the load(pkg_tar)

Noice! Done.

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Makefile, line 50 at r1 (raw file):

Previously, lukedirtwalker (Lukas Vogel) wrote…

delete this line it's not needed anymore. tools/gomocks manages it correctly

Done.

[lukedirtwalker]

Reviewed 6 of 6 files at r2.
Reviewable status: complete! all files reviewed, all discussions resolved

[lukedirtwalker]

/rebase