--- nono/Makefile.rule	2026/04/29 17:05:39	1.1.1.4
+++ nono/Makefile.rule	2026/04/29 17:05:47	1.1.1.5
@@ -42,13 +42,8 @@
 # CLEANDIRFILES
 #	make cleandir で削除する追加のファイル。
 
-.if "${CSRCS_all}" != ""
-CSRCS_all=	${CSRCS}
-.endif
-
-.if "${CXXSRCS_all}" != ""
-CXXSRCS_all=	${CXXSRCS}
-.endif
+CSRCS_all?=		${CSRCS}
+CXXSRCS_all?=	${CXXSRCS}
 
 all:	${TARGETS}
 
@@ -64,18 +59,18 @@ cleandir:
 install:
 
 .PHONY: depend
-.if "${CSRCS}" != "" || "${CXXSRCS}" != ""
-.PHONY: ${CSRCS:.c=.d} ${CXXSRCS:.cpp=.d}
-depend: ${CSRCS:.c=.d} ${CXXSRCS:.cpp=.d}
+.if "${CSRCS_all}" != "" || "${CXXSRCS_all}" != ""
+.PHONY: ${CSRCS_all:.c=.d} ${CXXSRCS_all:.cpp=.d}
+depend: ${CSRCS_all:.c=.d} ${CXXSRCS_all:.cpp=.d}
 	cat ${.ALLSRC} > .depends
 	rm -f *.d
 .endif
 
-.for f in ${CSRCS}
+.for f in ${CSRCS_all}
 ${f:.c=.d}:
 	${CC} ${CPPFLAGS} -E -MM $f > $@
 .endfor
-.for f in ${CXXSRCS}
+.for f in ${CXXSRCS_all}
 ${f:.cpp=.d}:
 	${CXX} ${CPPFLAGS} -E -MM $f > $@
 .endfor