Update - allow collecting stats when WITH_META_STATS is defined.

share/mk/meta.autodep.mk

@@ -176,7 +176,9 @@ _depend =
 .info ${_DEPENDFILE:S,${SRCTOP}/,,} _depend=${_depend}
 .endif
 
+.if ${UPDATE_DEPENDFILE} == "yes"
 gendirdeps:	${_DEPENDFILE}
+.endif
 
 .if !target(${_DEPENDFILE})
 .if ${_bootstrap_dirdeps} == "yes"
@@ -259,4 +261,28 @@ ${_DEPENDFILE}: .PRECIOUS
 .endif
 
 CLEANFILES += *.meta filemon.* *.db
+
+# these make it easy to gather some stats
+now_utc = ${%s:L:gmtime}
+start_utc := ${now_utc}
+
+meta_stats= meta=${.MAKE.META.FILES:[#]} \
+	created=${empty(.MAKE.META.CREATED):?0:${.MAKE.META.CREATED:[#]}}
+
+#.END: _reldir_finish
+.if target(gendirdeps)
+_reldir_finish: gendirdeps
+.endif
+_reldir_finish: .NOMETA
+	@echo "${TIME_STAMP} Finished ${RELDIR}.${TARGET_SPEC} seconds=$$(( ${now_utc} - ${start_utc} )) ${meta_stats}"
+
+#.ERROR: _reldir_failed
+_reldir_failed: .NOMETA
+	@echo "${TIME_STAMP} Failed ${RELDIR}.${TARGET_SPEC} seconds=$$(( ${now_utc} - ${start_utc} )) ${meta_stats}"
+
+.ifdef WITH_META_STATS
+.END: _reldir_finish
+.ERROR: _reldir_failed
+.endif
+
 .endif