Ticket #34857: Portfile.diff

Portfile

@@ -40 +40 @@
 #       BUILT_PRODUCTS_DIR=${worksrcpath}/build
 #       OTHER_LDFLAGS="-I${worksrcpath}/Frameworks"
 
+pre-fetch {
+        platform darwin {
+                if {${os.major} < 10} {
+                        ui_error "${name} requires OS X 10.6 or newer."
+                                return -code error "incompatible OS X version"
+                }
+        }
+}
+
 if { ![variant_isset use_source] } {
         default_variants +use_binary
 }