Chamakh, 32, is a free agent, having been released by Premier League side Crystal Palace at the end of his contract in the summer.
The Morocco international had a three-year spell at Arsenal, having arrived from French club Bordeaux in 2010.
He had loan spells at West Ham United and Palace before joining the Eagles on a permanent basis in 2014.
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Warnock, appointed on Tuesday, is moving rapidly to revamp the Cardiff squad.
The Bluebirds are expected to confirm the signings of Junior Hoilett and Sol Bamba as well as Chamakh, in time for the opening game under Warnock at home to Bristol City, on Friday, 14 October.
Former Arsenal striker Marouane Chamakh is the latest target for new Cardiff City manager Neil Warnock.