Ticket #37339: OpenCV-Portfile.diff

Portfile

@@ -139 +139 @@
 }
 
 variant opencl description {Enable OpenCL support.} {
+    if {${os.platform} == "darwin" && ${os.major} < 11} {
+        ui_error "The OpenCL variant only works with Mac OS X 10.7 Lion or later."
+        return -code error "incompatible Mac OS X version"
+    }
     configure.args-delete       -DWITH_OPENCL=OFF
     configure.args-append       -DWITH_OPENCL=ON
 }