Re: use of wildcard function recursively

[John Graham-Cumming]

Aditya Kher wrote:
> Is there any way to use wildcard to *find recursively* under given path
> e.g.
>
> SOURCE = $(wildcard source_dir/*.c)

$(wildcard ...) itself is not recursive, but it's pretty easy to wrap 
about $(wildcard ...) to make it recursive.  Here's my rwildcard 
function which works like wildcard but it recursive:

    rwildcard = $(foreach d,$(wildcard $1*),$(call 
rwildcard,$d/)$(filter $(subst *,%,$2),$d))

rwildcard has two parameters: the directory in which to start looking 
for files (this must either be blank for the current directory or end in 
a /); the second parameter is the search specification.

For example to find all .c files in the current directory and 
subdirectories do

    $(call rwildcard,,*.c)

To find all .c files in /tmp do

    $(call rwildcard,/tmp,*.c)

To find all .c file in a/b/c do

    $(call rwildcard,a/b/c,*.c)

rwildcard only handles the * glob and not other more complex patterns. 
The nice thing about rwildcard is that it doesn't depend on a specific 
shell or shell executable function like find.

John.
--
John Graham-Cumming
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