Re: bin/45875: usr.bin/make: make -B not using a shell for every command

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR bin/45875; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: bin/45875: usr.bin/make: make -B not using a shell for every
 command
Date: Fri, 27 Jan 2012 16:22:38 +0000

 On Thu, Jan 26, 2012 at 11:35:02PM +0000, Marko Sch?tz Schmuck wrote:
  >  >  That's in a separate invocation, as advertised. What are you
  >  >  complaining about? That it skips going through the shell for simple
  >  >  commands?
  >  
  >  Yes, that's what I am complaining about. It says that it executes a
  >  "single shell per command". Also there is the target .SINGLESHELL (not
  >  documented in the man page) that sets compatMake to true. The change I
  >  propose would also make that work.
 
 That's a feature, not a bug. If you find a case where it fails, that
 is, where make thinks it knows how to execute some piece of shell
 syntax itself but gets it wrong, please file a bug report. The
 behavior as it is should be completely equivalent, except faster.
 
 The important thing about how many shells it invokes is the scope of
 shell actions like "cd".
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost