CanonicalForm in factory fails to process as stream

[anonymous]

Trying to compile the example application.cc in factory will result in a "<<" operator not supported error.

---

error: no match for ‘operator>>’ (operand types are ‘std::istream {aka std::basic_istream<char>}’ and ‘CanonicalForm?’)

cin >> f;

---

During configuration I saw that it uses iostream for output.

[hannes]

Stream I/O is there, but usually disabled: configure factory with:

./configure --enable-streamio --without-Singular ....

to activate it.