Re: [PATCH 1/1] build: remove trailing '/.' when doing mkdir -p .deps/.

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+From: Jed Brown <jed@59A2.org>\r
+To: Tomi Ollila <tomi.ollila@iki.fi>, notmuch@notmuchmail.org\r
+Subject: Re: [PATCH 1/1] build: remove trailing '/.' when doing mkdir -p\r
+       .deps/.\r
+In-Reply-To: <1383487535-21597-1-git-send-email-tomi.ollila@iki.fi>\r
+References: <1383487535-21597-1-git-send-email-tomi.ollila@iki.fi>\r
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+Date: Sun, 03 Nov 2013 08:35:03 -0700\r
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+Cc: tomi.ollila@iki.fi\r
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+\r
+--=-=-=\r
+Content-Type: text/plain\r
+\r
+Tomi Ollila <tomi.ollila@iki.fi> writes:\r
+\r
+>  %.o: %.cc $(global_deps)\r
+> -    @mkdir -p .deps/$(@D)\r
+> +    @mkdir -p $(patsubst %/.,%,.deps/$(@D))\r
+>      $(call quiet,CXX $(CPPFLAGS) $(CXXFLAGS)) -c $(FINAL_CXXFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d\r
+\r
+An alternative approach is to use directory marker files [1] to clean up\r
+the recipes that need output directories and to satisfy Paul's second\r
+rule of makefiles [2].\r
+\r
+.SECONDEXPANSION:\r
+\r
+%.o: %.cc $(global_deps) | .deps/$$(@D)/.DIR\r
+       $(call quiet,CXX $(CPPFLAGS) $(CXXFLAGS)) -c $(FINAL_CXXFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d\r
+\r
+%/.DIR:\r
+       @mkdir -p $(patsubst %/.,%,$(@D))\r
+       @touch $@\r
+\r
+.PRECIOUS: %.DIR\r
+\r
+\r
+\r
+[1] http://www.cmcrossroads.com/article/making-directories-gnu-make\r
+[2] http://make.paulandlesley.org/rules.html\r
+\r
+--=-=-=\r
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