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--- make/autoconf/build-performance.m4
+++ make/autoconf/build-performance.m4
@@ -41,6 +41,10 @@ AC_DEFUN([BPERF_CHECK_CORES],
# Looks like a MacOSX system
NUM_CORES=`/usr/sbin/sysctl -n hw.ncpu`
FOUND_CORES=yes
+ elif test -x /sbin/sysctl; then
+ # Looks like a BSD system
+ NUM_CORES=`/sbin/sysctl -n hw.ncpu`
+ FOUND_CORES=yes
elif test "x$OPENJDK_BUILD_OS" = xaix ; then
NUM_CORES=`/usr/sbin/prtconf | grep "^Number Of Processors" | awk '{ print [$]4 }'`
FOUND_CORES=yes
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