Re: wildcard all the .cc file in the subdirectories?

[Ken Smith]

> On 27 September 2007 15:01, Eli Zaretskii wrote:
>
> >> From: "Dave Korn" <address@hidden>
> >> Date: Thu, 27 Sep 2007 13:25:57 +0100
> >> Cc:
> >>
> >>> Suppose I have a root directory, whose subdirectories could also
> >>> subdirectories, etc. I want to wildcard all the .cc in the root
> >>> directory, which shall give me all the path of all the .cc files.
> >>> Would you please let me know how to do it?
[snip]
> (Well, you could actually get horribly tricky with recursive functions adding
> successive instances of '*/' to the front of a string that start of as '.cc'
> and using $(wildcard) on that, but it's probably not worth the trouble).

I use this function.  Even without the $(info) it probably requires 3.81.

# logical not
not = $(if $(strip $(1)),,t)

# find-files-matching-extension:
# $(1)=subdir of $(CURDIR) to begin search
# $(2)=extension patterns
# $(3)=private recursive state variable (don't set)
find-files-matching-extension = \
$(strip \
  $(if $(call not,$(3)), \
    $(eval .thisdir := $(CURDIR)/$(1)) \
    , \
    $(eval .thisdir := $(1)) \
   ) \
  $(eval .thesefiles := $(wildcard $(.thisdir)/*)) \
  $(foreach .thisfile,$(.thesefiles), \
    $(eval .subdir := $(wildcard $(.thisfile)/*)) \
    $(if $(.subdir), \
      $(call find-files-matching-extension,$(.thisfile),$(2),t) \
      , \
      $(filter $(2),$(.thisfile)) \
     ) \
   ) \
 )

$(info $(call find-files-matching-extension,.,%.cc))

   Enjoy
   Ken