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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.
Michael Paul Bailey <jinxidoru@byu.net> and Christophe Tournayre <turn3r@users.sourceforge.net>.
2008-04-12
AC_DEFUN([AX_COUNT_CPUS], [ AC_REQUIRE([AC_PROG_EGREP]) AC_MSG_CHECKING(the number of available CPUs) CPU_COUNT="0" #On MacOS if test -x /usr/sbin/sysctl -a `/sbin/sysctl -a 2>/dev/null| grep -c hw.cpu`; then CPU_COUNT=`/usr/sbin/sysctl -n hw.ncpu` fi #On Linux if test "x$CPU_COUNT" = "x0" -a -e /proc/cpuinfo; then CPU_COUNT=`$EGREP -c '^processor' /proc/cpuinfo` fi if test "x$CPU_COUNT" = "x0"; then CPU_COUNT="1" AC_MSG_RESULT( [unable to detect (assuming 1)] ) else AC_MSG_RESULT( $CPU_COUNT ) fi ])
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