X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?p=subdirmk.git;a=blobdiff_plain;f=subdirmk%2Fcdeps.sd.mk;h=5d58b6b90c979ccd5153a95aed7f1e007d3a0301;hp=aeb35bf88427385246cf02a841b544325f22d9c1;hb=a2d0da0b0b2f40319d8787b98f5198f78303f85d;hpb=21f1f96d711d4e745a87bc1561143887c02f1031

diff --git a/subdirmk/cdeps.sd.mk b/subdirmk/cdeps.sd.mk
index aeb35bf..5d58b6b 100644
--- a/subdirmk/cdeps.sd.mk
+++ b/subdirmk/cdeps.sd.mk
@@ -1,5 +1,12 @@
+# subdirmk - useful rules for making and using cpp .*.d files
+#  Copyright 2019 Mark Wooding
+#  Copyright 2019 Ian Jackson
+# SPDX-License-Identifier: LGPL-2.0-or-later
+
+CDEPS_CFLAGS ?= -MD -MF $(*D)/.$(*F).d
 
 &DEPFILES += $(foreach b,$(patsubst %.o,%,$(&OBJECTS)), \
 		$(dir $b).$(notdir $b).d)
 -include $(&DEPFILES)
 
+&CLEAN += $(&DEPFILES)