Modified: trunk/dports/science/lalapps/Portfile (100320 => 100321)

--- trunk/dports/science/lalapps/Portfile	2012-12-08 07:07:50 UTC (rev 100320)
+++ trunk/dports/science/lalapps/Portfile	2012-12-08 07:07:56 UTC (rev 100321)
@@ -1,6 +1,7 @@
 # $Id$
 
 PortSystem    1.0
+PortGroup     active_variants 1.1
 
 name          lalapps
 version       6.10.0
@@ -49,26 +50,8 @@
 use_parallel_build yes
 
 variant lalxml description {Build with LALXML support} {
-  pre-fetch {
-    if { ![file exists ${prefix}/include/lal/LALXMLVOTableSerializersPulsar.h] } {
-      ui_error "
-****
-**** LALApps +lalxml requires LALPulsar +lalxml, please
-**** reinstall LALPulsar with the +lalxml variant.
-****
-"
-    error "${name} +lalxml requires lalpulsar +lalxml"
-    }
-    if { ![file exists ${prefix}/include/lal/LALInferenceXML.h] } {
-      ui_error "
-****
-**** LALApps +lalxml requires LALInference +lalxml, please
-**** reinstall LALInference with the +lalxml variant.
-****
-"
-    error "${name} +lalxml requires lalinference +lalxml"
-    }
-  }
+  require_active_variants lalpulsar lalxml
+  require_active_variants lalinference lalxml
   depends_lib-append    port:libxml2 \
                         port:lalxml
   configure.args-append --enable-lalxml