X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?p=subdirmk.git;a=blobdiff_plain;f=subdirmk%2Fusual.mk.in;h=66c71ebcde5ae968a04fa001accef3cd494800cb;hp=97f99e71bd676abb016dc1c3f78b015729f5240d;hb=41682cf1c6108dce44a3e7a57eaacec0c0b058bd;hpb=b549db60e5f03a7b3e4a3631bd9112e77a7eab4f

diff --git a/subdirmk/usual.mk.in b/subdirmk/usual.mk.in
index 97f99e7..66c71eb 100644
--- a/subdirmk/usual.mk.in
+++ b/subdirmk/usual.mk.in
@@ -3,6 +3,13 @@
 #  Copyright 2019 Ian Jackson
 # SPDX-License-Identifier: LGPL-2.0-or-later
 
+# Usage:
+#   include subdirmk/usual.mk
+# (probably in toplevel Subdir.sd.mk)
+#
+# Provides various conventional `make' variables, and a
+# rule for compiling C programs.
+
 VPATH		= $(top_srcdir)
 
 prefix		= @prefix@
@@ -19,7 +26,7 @@ LIBS		?= @LIBS@
 
 LINK		?= $(CC) -o$@ $(CFLAGS) $(LDFLAGS)
 AR		?= ar
-COMPILE		?= $(CC) -c -o$@ -MD -MF $(*D)/.$(*F).d $(DEFS) $(INCLUDES) $(CFLAGS)
+COMPILE		?= $(CC) -c -o$@ $(CDEPS_CFLAGS) $(DEFS) $(INCLUDES) $(CFLAGS)
 
 %.o: %.c
 	$(COMPILE) $<