Re: wildcard function returns nothing when filename contains '_' or '[' characters

[Paul Smith]

On Sun, 2011-10-23 at 19:21 +0200, earlgrey wrote:
> __modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard
> $(MODVERDIR)/*.mod)))
> 
> with MODVERDIR=fglrx-11.06[Driver 8.861]

There's no problem with underscores.

The problem with [] is that these are special to the shell's globbing
capability, just like "*" is a special character.  Ditto for the
whitespace.  Run "man 7 glob" for details.

If you try this from the shell:

        echo fglrx-11.06[Driver 8.861]/*.mod

you will not get back what you want either.  You have to escape special
characters:

        MODVERDIR = fglrx-11.06\[Driver\ 8.861\]

then it will work.

I should point out that (a) GNU make doesn't support spaces in targets
in general, so the whitespace will continue to be a problem for you
going forward, and (b) if you insist on using shell-special characters
like [] in your filenames you'll have to be very careful about how you
write your shell commands in recipes, to quote all the filenames that
might contain these characters.

My advice: don't use these kinds of pathnames.  You can make it work but
the ongoing effort will be significant.

-- 
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 Paul D. Smith <address@hidden>          Find some GNU make tips at:
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