Makefile/mem_stats: only modules Makfiles are used

Without specifying a depth, when building per-groups statistics, only
modules' Makefiles should be used, not other whatever libs are in each
module. This commit is needed because the wolfssl libs has its own
Makefile, with its own NAME= variables declared, resulting in redundant
(and unused) declarations.

Makefile.defs

@@ -529,8 +529,8 @@ endif
 
 ifneq (,$(MEM_STATS_HDR))
 EXPECTED_MD5=$(shell [ -f $(MEM_STATS_HDR) ] && tail -n 1 $(MEM_STATS_HDR) | awk '{print $$4}')
-MODULES_MD5=$(shell find $(dir $(MEM_STATS_HDR))/../modules -name "[Mm]akefile" | \
-			awk -F/ '{print $$(NF - 1)}' | sort | $(md5sum_cmd) | awk '{print $$1}')
+MODULES_MD5=$(shell find $(dir $(MEM_STATS_HDR))/../modules -maxdepth 2 -name "[Mm]akefile" | \
+			awk -F/ '{print $$(NF - 1)}' | sort -u | $(md5sum_cmd) | awk '{print $$1}')
 ifneq ($(EXPECTED_MD5),$(MODULES_MD5))
 REGENERATE_MEM_STATS=remove-mem-stats
 endif

Makefile.modules

@@ -42,8 +42,8 @@ else
 	md5sum_cmd = md5sum
 endif
 EXPECTED_MD5=$(shell [ -f $(MEM_STATS_HDR) ] && tail -n 1 $(MEM_STATS_HDR) | awk '{print $$4}')
-MODULES_MD5=$(shell find $(dir $(MEM_STATS_HDR))/../modules -name "[Mm]akefile" | \
-			awk -F/ '{print $$(NF - 1)}' | sort | $(md5sum_cmd) | awk '{print $$1}')
+MODULES_MD5=$(shell find $(dir $(MEM_STATS_HDR))/../modules -maxdepth 2 -name "[Mm]akefile" | \
+			awk -F/ '{print $$(NF - 1)}' | sort -u | $(md5sum_cmd) | awk '{print $$1}')
 ifneq ($(EXPECTED_MD5),$(MODULES_MD5))
 REGENERATE_MEM_STATS=remove-mem-stats
 endif

Makefile.rules

@@ -68,8 +68,8 @@ Makefile.conf: Makefile.conf.template
 
 # no need to generate mem/mem_stats.c from anywhere else
 mem/mem_stats.c: mem/mem_stats.h
-	@find modules/ -name "[Mm]akefile" -exec grep "NAME\s*=" {} \; \
-		| awk 'BEGIN { FS = "[=\\. ]"; \
+	@find modules/ -maxdepth 2 -name "[Mm]akefile" -exec grep "NAME\s*=" {} \; \
+		| sort -u | awk 'BEGIN { FS = "[=\\. ]"; \
 		print "/* This file is auto-generated by running \"make generate-mem-stats\" */"; \
 		print "/* You should NOT edit this file manually */"; \
 		print "#ifdef SHM_EXTRA_STATS"; \
@@ -82,8 +82,8 @@ remove-mem-stats:
 	-@rm -f $(MEM_STATS_HDR)
 
 %mem_stats.h: $(REGENERATE_MEM_STATS)
-	@find $(dir $@)/../modules/ -name "[Mm]akefile" -exec grep "NAME\s*=" {} \; \
-		| awk 'BEGIN { FS = "[=\\. ]"; \
+	@find $(dir $@)/../modules/ -maxdepth 2 -name "[Mm]akefile" -exec grep "NAME\s*=" {} \; \
+		| sort -u | awk 'BEGIN { FS = "[=\\. ]"; \
 		print "/* This file is auto-generated by running \"make generate-mem-stats\" */"; \
 		print "/* You should NOT edit this file manually */"; \
 		print "#ifdef SHM_EXTRA_STATS"; \