fix: discover nested Terraform submodules in the SUBMODULES global

Author: Benjamin Valiente (Contractor)

aws/network/modules/vpc-endpoints/s3-vpc-endpoint/makefile

@@ -0,0 +1,67 @@
+MODULEFILES := $(wildcard *.tf)
+TFLINTRC    ?= ../../.tflint.hcl
+TFDOCSRC    ?= ../../.terraform-docs.yml
+
+.PHONY: default
+default: checkfmt validate docs lint
+
+.PHONY: checkfmt
+checkfmt: .fmt
+
+.PHONY: fmt
+fmt: $(MODULEFILES)
+	terraform fmt
+	@touch .fmt
+
+.PHONY: validate
+validate: .validate
+
+.PHONY: docs
+docs: README.md
+
+.PHONY: lint
+lint: .lint
+
+.lint: $(MODULEFILES) .lintinit
+	tflint --config=$(TFLINTRC)
+	@touch .lint
+
+.lintinit: $(TFLINTRC)
+	tflint --init --config=$(TFLINTRC) --module
+	@touch .lintinit
+
+README.md: $(MODULEFILES)
+	terraform-docs --config "$(TFDOCSRC)" markdown table . --output-file README.md
+
+.fmt: $(MODULEFILES)
+	terraform fmt -check
+	@touch .fmt
+
+.PHONY: init
+init: .init
+
+.init: versions.tf .dependencies
+	terraform init -backend=false
+	@touch .init
+
+.validate: .init $(MODULEFILES) $(wildcard *.tf.example)
+	echo | cat - $(wildcard *.tf.example) > test.tf
+	if AWS_DEFAULT_REGION=us-east-1 terraform validate; then \
+		rm test.tf; \
+		touch .validate; \
+	else \
+		rm test.tf; \
+		false; \
+	fi
+
+.dependencies: *.tf
+	@grep -ohE \
+		"\b(backend|provider|resource|module) ['\"][[:alpha:]][[:alnum:]]*|\bsource  *=.*" *.tf | \
+		sed "s/['\"]//" | sort | uniq | \
+		tee /tmp/initdeps | \
+		diff -q .dependencies - >/dev/null 2>&1 || \
+		mv /tmp/initdeps .dependencies
+
+.PHONY: clean
+clean:
+	rm -rf .dependencies .fmt .init .lint .lintinit .terraform* .validate

makefile

@@ -6,11 +6,16 @@ export TFDOCSRC := $(CURDIR)/.terraform-docs.yml
 
 SUBMODULES         := $(filter-out \
 	%.md,\
-	$(wildcard \
-		platform/modules/* \
-		platform \
-		aws/*/modules/*\
-		aws/* \
+	$(foreach dir,\
+		$(wildcard \
+			platform/modules/* \
+			platform \
+			aws/*/modules/* \
+			aws/* \
+			platform/modules/*/* \
+			aws/*/modules/*/* \
+			),\
+		$(if $(wildcard $(dir)/*.tf),$(dir),)\
 		)\
 	)
 SUBMODULEMAKEFILES := $(foreach module,$(SUBMODULES),$(module)/makefile)