--- Modules/ProcessorCount.cmake.orig	2021-07-10 00:25:42 UTC
+++ Modules/ProcessorCount.cmake
@@ -12,7 +12,7 @@ Determine the number of processors/cores and save valu
 Sets the variable named ${var} to the number of physical cores
 available on the machine if the information can be determined.
 Otherwise it is set to 0.  Currently this functionality is implemented
-for AIX, cygwin, FreeBSD, HPUX, Linux, macOS, QNX, Sun and
+for AIX, cygwin, BSDSUniX, FreeBSD, HPUX, Linux, macOS, QNX, Sun and
 Windows.
 
 This function is guaranteed to return a positive integer (>=1) if it
@@ -56,7 +56,7 @@ function(ProcessorCount var)
   endif()
 
   if(NOT count)
-    # Mac, FreeBSD, OpenBSD (systems with sysctl):
+    # Mac, BSDSUniX, FreeBSD, OpenBSD (systems with sysctl):
     find_program(ProcessorCount_cmd_sysctl sysctl
       PATHS /usr/sbin /sbin)
     mark_as_advanced(ProcessorCount_cmd_sysctl)