Modified: trunk/dports/math/qrupdate/Portfile (144145 => 144146)

--- trunk/dports/math/qrupdate/Portfile	2016-01-03 06:51:03 UTC (rev 144145)
+++ trunk/dports/math/qrupdate/Portfile	2016-01-03 06:51:46 UTC (rev 144146)
@@ -97,6 +97,11 @@
     default_variants-append +accelerate
 }
 
+if {![variant_isset accelerate] && ![variant_isset openblas] && ![variant_isset atlas] } {
+    ui_error "\n\nYou must select either the +accelerate, +atlas, or +openblas variant.\n"
+    return -code error "Invalid variant selection"
+}
+
 if {[variant_isset g95]} {
     post-patch {
         reinplace "s|Makeconf|Makeconf.g95|" ${worksrcpath}/Makefile