Re: Using environmnet variables in make

[kalyan]

i guess backslash wouldnt work because export is not recognized as a shell command in make..
Also, make manual hints that export can be used to communicate variables to sub-make, so i am not sure if exporting a variable and using it in the same makefile would work..

kalyan

On Fri, Feb 27, 2009 at 4:38 AM, John Calcote <address@hidden> wrote:

Alan,

Try adding a backslash after the export QA... statement like this:

test:
  export QA_STEP=start; \
  touch ${QA_STEP};

make executes each line in a separate shell, so QA_STEP will not be set in
the shell that executes the touch statement unless you execute both commands
in the same statement.

John

-----Original Message-----
From: help-make-bounces+john.calcote=gmail.com@gnu.org
[mailto:help-make-bounces+john.calcote=gmail.com@gnu.org] On Behalf Of albob
Sent: Thursday, February 26, 2009 10:28 AM
To: address@hidden
Subject: Using environmnet variables in make


Hi,
  I have the following Makefile

.EXPORT_ALL_VARIABLES:
.SUFFIXES:

test:
  export QA_STEP=start ;
  touch ${QA_STEP};

Which I run using "gmake". This gives me:

slappy628: gmake test
export QA_STEP=qa_rtl ;
touch  ;
touch: file arguments missing
Try `touch --help' for more information.
gmake: *** [test] Error 1

Can anyone tell me what I am doing wrong? No matter what I try I can not get
it to pick up on the environment variable set. Help would be much
appreciated.
Thanks
      Alan

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