X-Git-Url: https://git.notmuchmail.org/git?a=blobdiff_plain;f=emacs%2FMakefile.local;h=6a39b32d2fab386252faddcd228072b2735215b6;hb=dfab8e5e49d90c415f9585a02a2b0d6f72b4083a;hp=92467a318e75fd5669f46f4e16fd7a965ac5a50f;hpb=6e56912d1320c6500190b31240f937dedadf0714;p=notmuch

diff --git a/emacs/Makefile.local b/emacs/Makefile.local
index 92467a31..6a39b32d 100644
--- a/emacs/Makefile.local
+++ b/emacs/Makefile.local
@@ -29,19 +29,33 @@ emacs_bytecode = $(emacs_sources:.el=.elc)
 # the byte compiler may load an old .elc file when processing a
 # "require" or we may fail to rebuild a .elc that depended on a macro
 # from an updated file.
+ifeq ($(HAVE_EMACS),1)
 $(dir)/.eldeps: $(dir)/Makefile.local $(dir)/make-deps.el $(emacs_sources)
 	$(call quiet,EMACS) --directory emacs -batch -l make-deps.el \
 		-f batch-make-deps $(emacs_sources) > $@.tmp && \
-		(cmp -s $@.tmp $@ || mv $@.tmp $@)
--include $(dir)/.eldeps
-CLEAN+=$(dir)/.eldeps $(dir)/.eldeps.tmp
+		mv $@.tmp $@
+# We could include .eldeps directly, but that would cause a make
+# restart whenever any .el file was modified, even if dependencies
+# didn't change, because the mtime of .eldeps will change.  Instead,
+# we include a second file, .eldeps.x, which we ensure always has the
+# same content as .eldeps, but its mtime only changes when dependency
+# information changes, in which case a make restart is necessary
+# anyway.
+$(dir)/.eldeps.x: $(dir)/.eldeps
+	@cmp -s $^ $@ || cp $^ $@
+-include $(dir)/.eldeps.x
+endif
+CLEAN+=$(dir)/.eldeps $(dir)/.eldeps.tmp $(dir)/.eldeps.x
 
+ifeq ($(HAVE_EMACS),1)
 %.elc: %.el $(global_deps)
 	$(call quiet,EMACS) --directory emacs -batch -f batch-byte-compile $<
+endif
 
 ifeq ($(WITH_EMACS),1)
 ifeq ($(HAVE_EMACS),1)
 all: $(emacs_bytecode)
+install-emacs: $(emacs_bytecode)
 endif
 
 install: install-emacs