Created attachment 216210 [details]
Patch to upgrade mail/filtermail to 0.8.6

With OSVERSION: 1300094 portscout reports failure to build

c++ -DHAVE_CONFIG_H -I. -I.. -I/usr/local/include -I. -I../include -I.. -DLOCALEDIR=\"/usr/local/share/locale\" -I../intl -I.. -I../include -I.  -I/usr/local/include -Wall -O2 -pipe -fstack-protector-strong -fno-strict-aliasing   -MT rcfile.o -MD -MP -MF .deps/rcfile.Tpo -c -o rcfile.o rcfile.cc
rcfile.ll:151:14: error: no viable overloaded '='
        yyin = new ifstream (sub_file.c_str ());
        ~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/v1/istream:200:20: note: candidate function not viable: no known conversion from 'std::__1::ifstream *' (aka 'basic_ifstream<char> *') to 'std::__1::basic_istream<char>' for 1st argument; dereference the argument with *
    basic_istream& operator=(basic_istream&& __rhs);
                   ^
/usr/include/c++/v1/istream:211:20: note: candidate function not viable: no known conversion from 'std::__1::ifstream *' (aka 'basic_ifstream<char> *') to 'const std::__1::basic_istream<char>' for 1st argument; dereference the argument with *
    basic_istream& operator=(const basic_istream& __rhs) = delete;
                   ^
rcfile.ll:153:15: error: cannot cast from type 'std::istream' (aka 'basic_istream<char>') to pointer type 'std::__1::ifstream *' (aka 'basic_ifstream<char> *')
        if (!((ifstream*) yyin)->is_open ())
              ^~~~~~~~~~~~~~~~

This appears to be caused by a recent update to contrib/flex from 2.5.37 to 2.6.4 where upstream changed yyin and yyout from pointers to references.

I've upgraded filtermail to 0.8.6 and added textproc/flex as a conditional dependency for ${OSVERSION} < 1300000.

This builds and runs successfully on 13.0-CURRENT and 12.1-RELEASE-p5