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Date: Mon, 22 Aug 2011 17:42:42 +0800
From: Kang Kai <Kai.Kang@windriver.com>
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Cc: Patches and discussions about the oe-core layer
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Subject: question about meta/class/qmake-base.bbclass
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Hi Holger,

When I read the file  meta/class/qmake-base.bbclass, I find that that 
are 2 lines:
     unset QMAKESPEC || true
     ${OE_QMAKE_QMAKE} -makefile -spec ${QMAKESPEC} -o Makefile 
$QMAKE_VARSUBST_PRE $AFTER $PROFILES $QMAKE_VARSUBST_POST || die "Error 
calling ${OE_QMAKE_QMAKE} on $PROFILES"

I am confused that why unset QMAKESPEC first and then use it a argument 
for qmake?
Could you help me to get out of that?

Thanks and Regards,
Kai