Fix universal variant build. Closes ticket https://trac.macports.org/…

…ticket/16530.

git-svn-id: https://svn.macports.org/repository/macports/trunk/dports@40498 d073be05-634f-4543-b044-5fe20cf6d1d6

audio/taglib/Portfile

@@ -16,3 +16,17 @@ homepage         http://developer.kde.org/~wheeler/taglib.html
 platforms        darwin
 master_sites     http://developer.kde.org/~wheeler/files/src/
 checksums        sha1 0f57d4763af82a3d87f6c3f8875ca5d87ead918f
+
+if {[variant_isset universal]} {
+   depends_lib   port:libtool port:autoconf
+}
+
+pre-configure {
+   if {[variant_isset universal]} {
+      delete ${worksrcpath}/autom4te.cache
+      copy -force ${prefix}/share/libtool/ltmain.sh ${worksrcpath}/admin
+      copy -force ${prefix}/share/aclocal/libtool.m4 ${worksrcpath}/admin/libtool.m4.in
+      system "cd ${worksrcpath} && autoreconf"
+   }
+}
+