On Sun, Nov 03 2013, Jed Brown <jed@59A2.org> wrote: > Tomi Ollila <tomi.ollila@iki.fi> writes: > >> %.o: %.cc $(global_deps) >> - @mkdir -p .deps/$(@D) >> + @mkdir -p $(patsubst %/.,%,.deps/$(@D)) >> $(call quiet,CXX $(CPPFLAGS) $(CXXFLAGS)) -c $(FINAL_CXXFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d > > An alternative approach is to use directory marker files [1] to clean up > the recipes that need output directories and to satisfy Paul's second > rule of makefiles [2]. > > .SECONDEXPANSION: > > %.o: %.cc $(global_deps) | .deps/$$(@D)/.DIR > $(call quiet,CXX $(CPPFLAGS) $(CXXFLAGS)) -c $(FINAL_CXXFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d > > %/.DIR: > @mkdir -p $(patsubst %/.,%,$(@D)) > @touch $@ > > .PRECIOUS: %.DIR Hmm, nice suggestion... the diff to be reviewed is just soo much bigger ;/ Now that I learned new things [11] yet another alternative is: diff --git a/Makefile.local b/Makefile.local index 72524eb..cc1a0cb 100644 --- a/Makefile.local +++ b/Makefile.local @@ -235,12 +235,15 @@ endif # Otherwise, print the full command line. quiet ?= $($(shell echo $1 | sed -e s'/ .*//')) -%.o: %.cc $(global_deps) - @mkdir -p .deps/$(@D) +depdirs = $(subdirs:%=.deps/%) + +$(depdirs): + @mkdir -p $(depdirs) + +%.o: %.cc $(global_deps) | $(depdirs) $(call quiet,CXX $(CPPFLAGS) $(CXXFLAGS)) -c $(FINAL_CXXFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d -%.o: %.c $(global_deps) - @mkdir -p .deps/$(@D) +%.o: %.c $(global_deps) | $(depdirs) $(call quiet,CC $(CPPFLAGS) $(CFLAGS)) -c $(FINAL_CFLAGS) $< -o $@ -MD -MP -MF .deps/$*.d .PHONY : clean still, for the time being I'd still use the patch I originally proposed due to the triviality I change... [11] http://www.gnu.org/software/make/manual/html_node/Prerequisite-Types.html Tomi > [1] http://www.cmcrossroads.com/article/making-directories-gnu-make > [2] http://make.paulandlesley.org/rules.html