--- itk4.0.2/generic/itkBase.c.orig	2016-03-26 23:13:05.760579209 +0000
+++ itk4.0.2/generic/itkBase.c	2016-03-26 23:13:27.826174560 +0000
@@ -73,7 +73,7 @@
             lappend dirs [file join $bindir .. .. library]\n\
             lappend dirs [file join $bindir .. .. itk library]\n\
             # On MacOSX, check the directories in the tcl_pkgPath\n\
-            if {[string equal $::tcl_platform(platform) \"unix\"] && \
+            if {[string equal $::tcl_platform(platform) \"unix\"] || \
                     [string equal $::tcl_platform(os) \"Darwin\"]} {\n\
                 foreach d $::tcl_pkgPath {\n\
                     lappend dirs [file join $d itk$patchLevel]\n\