Index: Portfile
===================================================================
--- Portfile	(revision 60074)
+++ Portfile	(working copy)
@@ -100,9 +100,12 @@
 
 pre-configure {
     # Get some system specific variables for maximum optimization
-    set cpufreq [expr {[exec sysctl -n hw.cpufrequency]/1000000}]
-    ui_debug "Setting CPU Frequency for: ${cpufreq}"
-    configure.args-append -D c -DPentiumCPS=${cpufreq}
+    if {[string equal "${os.arch}" "powerpc"]} {
+    } else {
+        set cpufreq [expr {[exec sysctl -n hw.cpufrequency]/1000000}]
+        ui_debug "Setting CPU Frequency for: ${cpufreq}"
+        conifigure.args-append -D c -DPentiumCPS=${cpufreq}
+    }
 
     # first do a 'fake configure' of atlas so we get optimized lapack libraries
     ui_debug "performing fake configure of atlas for optimized lapack"