Modified: trunk/dports/math/arpack/Portfile (144139 => 144140)

--- trunk/dports/math/arpack/Portfile	2016-01-03 05:56:19 UTC (rev 144139)
+++ trunk/dports/math/arpack/Portfile	2016-01-03 05:58:00 UTC (rev 144140)
@@ -84,6 +84,11 @@
     default_variants +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"
+}
+
 post-destroot {
     reinplace "s|/usr|${prefix}|g" ${destroot}${prefix}/lib/pkgconfig/arpack.pc
 }