Allow make to run localtools (#2900)

Author: josvazg

Makefile

@@ -206,8 +206,16 @@ endif
 
 # GO TOOLS
 CRD2GO := go tool -modfile=tools/toolbox/go.mod crd2go
-OPENAPI2CRD := go tool -modfile=tools/toolbox/go.mod openapi2crd
-SCAFFOLDER := go tool -modfile=tools/toolbox/go.mod scaffolder
+ifdef LOCALTOOLS
+	BUILD_OPENAPI2CRD := tools/openapi2crd/bin/openapi2crd
+	OPENAPI2CRD := tools/openapi2crd/bin/openapi2crd
+	BUILD_SCAFFOLDER := tools/scaffolder/bin/scaffolder
+	SCAFFOLDER := tools/scaffolder/bin/scaffolder
+else
+	OPENAPI2CRD ?= go tool -modfile=tools/toolbox/go.mod openapi2crd
+	SCAFFOLDER ?= go tool -modfile=tools/toolbox/go.mod scaffolder
+endif
+
 
 .DEFAULT_GOAL := help
 .PHONY: help
@@ -864,7 +872,13 @@ $(ALL_IN_ONE_AUTOGENERATED_CONFIG): manifests update-manager-kustomization rbac-
 	@$(KUSTOMIZE) build --load-restrictor LoadRestrictionsNone $(RELEASE_AUTOGENERATED) > $@
 	@echo "Created $@"
 
-gen-crds:
+tools/openapi2crd/bin/openapi2crd:
+	make -C tools/openapi2crd build
+
+tools/scaffolder/bin/scaffolder:
+	make -C tools/scaffolder build
+
+gen-crds: $(BUILD_OPENAPI2CRD)
 	@echo "==> Generating CRDs..."
 	$(OPENAPI2CRD) --config tools/openapi2crd/config.yaml \
 	--output $(realpath .)/config/generated/crd/bases/crds.yaml
@@ -874,7 +888,7 @@ gen-go-types:
 	$(CRD2GO) --input $(realpath .)/config/generated/crd/bases/crds.yaml \
 	--output $(realpath .)/internal/nextapi/generated/v1
 
-run-scaffolder:
+run-scaffolder: $(BUILD_SCAFFOLDER)
 	@echo "==> Generating Go controller scaffolding and indexers..."
 	$(SCAFFOLDER) --input $(realpath .)/config/generated/crd/bases/crds.yaml \
 	--all --indexer-out $(realpath .)/internal/generated/controller \