When you execute an external command with system that command will not be affected by perl internal redirection of STDOUT.

One possible workaround to your problem is to call tee from inside system: 

system ("nmake /df $object.mak CFG=\"$object - ${BUILD_CFG}$build_conf
+ig\"|tee -a $buildLog");

[download]

(perhaps you also want to join STDERR and STDOUT before the tee, so insert a 2>&1 in front of the pipe.

(Update: fixed redirection thingy)

In reply to Re: Print STDERR&STDOUT to log file and to the screen by moritz
in thread Print STDERR&STDOUT to log file and to the screen by Noame

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