# HG changeset patch
# User Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
# Date 1721044179 14400
#      Mon Jul 15 07:49:39 2024 -0400
# Node ID e968936fb567c970ce1f9338f3e9217dc612463c
# Parent  50a3b04d5000a18c566e599864b68b2da4e7e6ea
build: clean known object files

If there was an object file in a subdirectory, it didn't get cleaned prior
to this change.

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

diff --git a/build.mk b/build.mk
--- a/build.mk
+++ b/build.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2022-2023 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
+# Copyright (c) 2022-2024 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -46,8 +46,8 @@
 	${SIZE} ${ELFS}
 
 .PHONY: clean
-clean:
-	rm -f ${ELFS} ${BINS} ${HEXS} ivec.*.S *.o
+clean: ${MCUS:C/^/clean_/}
+	rm -f ${ELFS} ${BINS} ${HEXS}
 
 .for mcu in ${MCUS}
 OBJS_${mcu}=\
@@ -95,4 +95,8 @@
 
 ${NAME}-${mcu}.ihex: ${NAME}-${mcu}.elf
 	${OBJCOPY} -O ihex ${.ALLSRC} ${.TARGET}
+
+clean_${mcu}:
+	rm -f ivec.${mcu}.S ${OBJS_${mcu}}
+
 .endfor