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Re: [Fwd: Slack11.0 /usr/bin/make incompatible with LPRng-3.8.28 Makefil

From: Paul Smith
Subject: Re: [Fwd: Slack11.0 /usr/bin/make incompatible with LPRng-3.8.28 Makefile.in]
Date: Tue, 05 Dec 2006 02:16:19 -0500

On Fri, 2006-12-01 at 13:08 -0800, david baker wrote:

> I'm forwarding a note I sent to Karl Berry <address@hidden> which he 
> advised to be sent to you.  Additionally I am attaching screen shots of 
> the actions I took and published on linuxquestions.org and the 
> Makefile.in from LPRng-3.8.28. The GNU Make version which fails is 
> 3.81.  The GNU Make version which works is 3.80.

David: thanks for sending me the extra info.  In the future please
remember to CC the mailing list rather than sending things to me

The problem is that the LPRng makefile (or Makefile.in as the case may
be) is incorrect.  In particular, this line is very, very wrong:


The SHELL make variable is special to make, in that it specifies what
program make will invoke to run the commands you provide in your rules.
Also, make is not a shell, and make variable syntax is not identical to
shell variable syntax.  In particular, make variable values do NOT have
quotes expanded.

The above line, with the quotes, tells make that the shell it should
invoke is the literal string "/bin/sh" (with quotes).  That string does
not look to make like a "normal" Bourne shell name, so make doesn't
recognize it as such and tries to do something fairly bizarre.  I
suspect there may be a bug related to this, or at least unexpected

Nevertheless, the above is quite wrong.  In general you shouldn't set
SHELL at all, but if you must then your Makefile.in should say merely:

  SHELL = /bin/sh

(no quotes).

 Paul D. Smith <address@hidden>          Find some GNU make tips at:
 http://www.gnu.org                      http://make.paulandlesley.org
 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist

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