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66 lines
2.1 KiB
66 lines
2.1 KiB
# =========================================================================== |
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# http://www.gnu.org/software/autoconf-archive/ax_count_cpus.html |
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# =========================================================================== |
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# |
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# SYNOPSIS |
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# |
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# AX_COUNT_CPUS |
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# |
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# DESCRIPTION |
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# |
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# Attempt to count the number of processors present on the machine. If the |
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# detection fails, then a value of 1 is assumed. |
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# |
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# The value is placed in the CPU_COUNT variable. |
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# |
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# LICENSE |
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# |
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# Copyright (c) 2014 Karlson2k (Evgeny Grin) <k2k@narod.ru> |
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# Copyright (c) 2012 Brian Aker <brian@tangent.org> |
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# Copyright (c) 2008 Michael Paul Bailey <jinxidoru@byu.net> |
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# Copyright (c) 2008 Christophe Tournayre <turn3r@users.sourceforge.net> |
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# |
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# Copying and distribution of this file, with or without modification, are |
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# permitted in any medium without royalty provided the copyright notice |
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# and this notice are preserved. This file is offered as-is, without any |
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# warranty. |
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#serial 10 |
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AC_DEFUN([AX_COUNT_CPUS],[ |
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AC_REQUIRE([AC_CANONICAL_HOST]) |
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AC_REQUIRE([AC_PROG_EGREP]) |
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AC_MSG_CHECKING([the number of available CPUs]) |
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CPU_COUNT="0" |
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AS_CASE([$host_os],[ |
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*darwin*],[ |
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AS_IF([test -x /usr/sbin/sysctl],[ |
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sysctl_a=`/usr/sbin/sysctl -a 2>/dev/null| grep -c hw.cpu` |
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AS_IF([test sysctl_a],[ |
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CPU_COUNT=`/usr/sbin/sysctl -n hw.ncpu` |
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]) |
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])],[ |
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*linux*],[ |
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AS_IF([test "x$CPU_COUNT" = "x0" -a -e /proc/cpuinfo],[ |
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AS_IF([test "x$CPU_COUNT" = "x0" -a -e /proc/cpuinfo],[ |
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CPU_COUNT=`$EGREP -c '^processor' /proc/cpuinfo` |
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]) |
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])],[ |
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*mingw*],[ |
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AS_IF([test -n "$NUMBER_OF_PROCESSORS"],[ |
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CPU_COUNT="$NUMBER_OF_PROCESSORS" |
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])],[ |
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*cygwin*],[ |
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AS_IF([test -n "$NUMBER_OF_PROCESSORS"],[ |
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CPU_COUNT="$NUMBER_OF_PROCESSORS" |
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]) |
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]) |
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AS_IF([test "x$CPU_COUNT" = "x0"],[ |
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CPU_COUNT="1" |
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AC_MSG_RESULT( [unable to detect (assuming 1)] ) |
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],[ |
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AC_MSG_RESULT( $CPU_COUNT ) |
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]) |
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])
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