Modified: trunk/dports/databases/mongodb/Portfile (140525 => 140526)

--- trunk/dports/databases/mongodb/Portfile	2015-09-21 19:46:32 UTC (rev 140525)
+++ trunk/dports/databases/mongodb/Portfile	2015-09-21 19:46:53 UTC (rev 140526)
@@ -63,6 +63,11 @@
                     --use-system-snappy \
                     --extralib=pcre,pcrecpp,snappy
 
+# Specify a short variant dir because the default variant dir is deeply nested
+# and can be very long, so long that on some systems the build will fail with
+# "Argument list too long"; see https://jira.mongodb.org/browse/SERVER-13829
+build.args-append   --variant-dir=MP
+
 supported_archs     i386 x86_64
 lappend merger_build_args(i386) --32
 lappend merger_build_args(x86_64) --64