depends xapian-core &&
depends swig &&

optional_depends python \
                 "--with-python" \
                 "--without-python" \
                 "to build Python bindings" &&
optional_depends RUBY \
                 "--with-ruby" \
                 "--without-ruby" \
                 "to build Ruby bindings" &&
optional_depends tcl \
                 "--with-tcl" \
                 "--without-tcl" \
                 "to build Tcl bindings" &&
optional_depends PHP \
                 "--with-php" \
                 "--without-php" \
                 "to build PHP extension" &&
optional_depends CSHARP \
                 "--with-csharp" \
                 "--without-csharp" \
                 "to build .NET bindings" 

.