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Re: [PATCH] Should use backslashes in depend2.am


From: Jan Engelhardt
Subject: Re: [PATCH] Should use backslashes in depend2.am
Date: Sun, 21 Oct 2007 21:28:19 +0200 (CEST)

On Oct 21 2007 21:22, Ralf Wildenhues wrote:
>> 
>> My "don't be so verbose" patch (now posix compliant as it seems to
>> have turned out) - where the full command needs to be (read: should
>> be, preferably, but not striclty necessary) on one line, as @echo is
>> used.
>
>Hmm, can't you just push that onto your patch?  The way the code is
>written now it saves one shell invocation per compilation, which is
>a nice speedup for gcc users.  GNU make implements this optimization:
>in case the rule command does not contain shell active characters,
>it execs the compiler right away instead of `sh -c ...'.
>
>> Since ?SUBDIROBJ? uses &&\ I thought it would not hurt too much to also
>> use it in the ?!SUBDIROBJ? case.
>
>Well, in the ?SUBDIROBJ? case there is a shell command substitution
>`cmd`, so in that case the shell will be invoked anyway.

Ah, ok.

Well, just thought, being in sync with upstream as close as possible, but well,
reasonable argument.




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