On Sat, Jun 26, 2004 at 04:18:06PM -0500, Boris Kolpackov wrote:
>
> Another patch, which I think you may be interested in, is
> pattern-specific-expansion.patch. Here is the description:
>
> The following makefile prints 'B' instead of 'A'.
>
> a := A
>
> %bar : arg := $a
> %bar : ; @echo $(arg)
>
> a := B
>
> foobar:
>
>
> The patch adds additional expansion at pattern definition
> point for simple variables (i.e. declared with :=). Also
> note that you can inhibit this additional expansion if
> you want to:
>
>
> %bar : arg := $a $$a
>
>
> With this change the makefile above prints 'A B'.
>
>
>From info make:
>>>>>>>>>>>>>>>>>>>>>
Rule Definition
---------------
A rule is always expanded the same way, regardless of the form:
IMMEDIATE : IMMEDIATE ; DEFERRED
DEFERRED
That is, the target and prerequisite sections are expanded
immediately, and the commands used to construct the target are always
deferred.
>>>>>>>>>>>>>>>>>>>>>>>
Given the above information from info make I agree with Boris on this.
Both 'a' and 'arg' should be considered IMMEDIATE according to the snippet
included.
Sam
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