test: Add build test for apiserver, agent, and workflow (kubeflow#384)

* Add build test for apiserver, agent, and workflow

* Separate backend build steps

* Rename backend build targets

.travis.yml

@@ -60,6 +60,11 @@ matrix:
         - python3 -m pip install requests
       script:
         - make check_doc_links
+    - name: "Verify apiserver, agent, and workflow build"
+      language: go
+      go: 1.15.x
+      script:
+        - make build-backend
 
 # =================================
 # TODO: merge with config from KFP

Makefile

@@ -135,3 +135,19 @@ build: ## Create GO vendor directories with all dependencies
 build-release-template: ## Build KFP Tekton release deployment templates
 	@mkdir -p install/$(KFP_TEKTON_RELEASE)
 	@kustomize build manifests/kustomize/env/kfp-template -o install/$(KFP_TEKTON_RELEASE)/kfp-tekton.yaml
+
+.PHONY: build-backend
+build-backend: build-apiserver build-agent build-workflow ## Verify apiserver, agent, and workflow build
+	@echo "$@: OK"
+
+.PHONY: build-apiserver
+build-apiserver: ## Build apiserver
+	go build -o apiserver ./backend/src/apiserver
+
+.PHONY: build-agent
+build-agent: ## Build agent
+	go build -o agent ./backend/src/agent/persistence
+
+.PHONY: build-workflow
+build-workflow: ## Build workflow
+	go build -o workflow ./backend/src/crd/controller/scheduledworkflow/*.go