build: delete the default .SUFFIXES

All implicit rules in notmuch Makefiles are "pattern rules"; Deleting the
default suffixes (to support obsolete, old-fashioned "suffix rules") from
make reduces the output of 'make -d' by 40 to 90 percent, helping e.g.
debugging make problems.

diff --git a/Makefile.local b/Makefile.local
index c85e09c52b212a0f1ee0fe1afa99e9d1f337203e..174506c52d90b8254b3157e22064b50a16989948 100644 (file)
--- a/Makefile.local
+++ b/Makefile.local
@@ -325,3 +325,5 @@ DISTCLEAN := $(DISTCLEAN) .first-build-message Makefile.config
 DEPS := $(SRCS:%.c=.deps/%.d)
 DEPS := $(DEPS:%.cc=.deps/%.d)
 -include $(DEPS)
+
+.SUFFIXES: # Delete the default suffixes. Old-Fashioned Suffix Rules not used.