Re: Fwd: bug or feature ?

[Paul Smith]

On Wed, 2009-10-28 at 11:12 +0200, Denis Onischenko wrote:
> The following fragment from glibc's Makefile has the same problem:
> 
> $(objpfx)stubs ../po/manual.pot $(objpfx)stamp%:
>        $(make-target-directory)
>        touch $@
> 
> How the "touch $@" command can be executed only once to make all the
> targets, when the target name is not known in advance ?

There is no way to do this, currently, in GNU make except through
pattern rules.  Just listing one pattern target with a bunch of
non-pattern rules won't do it.

> Is the above rule equivalent to the following rules?
> 
> $(objpfx)stubs ../po/manual.pot:
>        $(make-target-directory)
>        touch $@
> 
> 
> $(objpfx)stamp%:
>        $(make-target-directory)
>        touch $@ 

Yes, exactly.  If you run "make -p" you'll see that this is exactly how
make has parsed that makefile into its internal database.

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