Re: Trouble with redirecting gs output in make

[Paul D. Smith]

%% "TAZ Vukovic, Mirko" <address@hidden> writes:

  tvm> I am having trouble with the following command in GNUmake 3.79.1,
  tvm> where I am trying to capture the bounding box info in a file:

  tvm> $(GS) -dNOPAUSE  -sDEVICE=bbox -dBATCH $(<) >& $(@) 

  tvm> It produces the error 

  tvm> Syntax error: Bad fd number 

The operator ">&" is a C shell operator (and some Bourne-alike shells,
like bash, also implement it).

All versions of make, including GNU make, invoke their commands using
the Bourne shell /bin/sh, not csh, so this operator is invalid in make
commands, thus your error.

The right way to redirect both stdout and stderr in sh is:

  > $@ 2>&1

(specifically, redirect stdout to $@, then dup stderr to go to the same
place as stdout).

HTH.

-- 
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 Paul D. Smith <address@hidden>          Find some GNU make tips at:
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