chore: updated Makefile and mmv builder (GoogleCloudPlatform#12314)

GNUmakefile

@@ -59,10 +59,12 @@ terraform build provider:
 	make tpgtools
 
 mmv1:
+	# Chaining these with "&&" is critical so this will exit non-0 if the first
+	# command fails, since we're not forcing bash and errexit / pipefail here.
 	cd mmv1;\
 		if [ "$(VERSION)" = "ga" ]; then \
-			go run . --output $(OUTPUT_PATH) --version ga --no-docs $(mmv1_compile); \
-			go run . --output $(OUTPUT_PATH) --version beta --no-code $(mmv1_compile); \
+			go run . --output $(OUTPUT_PATH) --version ga --no-docs $(mmv1_compile) \
+			&& go run . --output $(OUTPUT_PATH) --version beta --no-code $(mmv1_compile); \
 		else \
 			go run . --output $(OUTPUT_PATH) --version $(VERSION) $(mmv1_compile); \
 		fi

mmv1/main.go

@@ -132,9 +132,13 @@ func main() {
 	}
 
 	startTime := time.Now()
+	providerName := "default (terraform)"
+	if *forceProvider != "" {
+		providerName = *forceProvider
+	}
 	log.Printf("Generating MM output to '%s'", *outputPath)
-	log.Printf("Using %s version", *version)
-	log.Printf("Using %s provider", *forceProvider)
+	log.Printf("Building %s version", *version)
+	log.Printf("Building %s provider", providerName)
 
 	// Building compute takes a long time and can't be parallelized within the product
 	// so lets build it first

mmv1/provider/terraform.go

@@ -499,7 +499,7 @@ func (t Terraform) CompileFileList(outputFolder string, files map[string]string,
 
 func (t Terraform) addHashicorpCopyRightHeader(outputFolder, target string) {
 	if !expectedOutputFolder(outputFolder) {
-		log.Printf("Unexpected output folder (%s) detected"+
+		log.Printf("Unexpected output folder (%s) detected "+
 			"when deciding to add HashiCorp copyright headers.\n"+
 			"Watch out for unexpected changes to copied files", outputFolder)
 	}