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   AX_COUNT_CPUS
  
Attempt to count the number of processors present on the machine. If the detection fails, then a value of 1 is assumed.
The value is placed in the CPU_COUNT variable.
http://autoconf-archive.cryp.to/ax_count_cpus.m4
    Copyright © 2008 Michael Paul Bailey <jinxidoru@byu.net>
    Copyright © 2008 Christophe Tournayre
    <turn3r@users.sourceforge.net>
   
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