Hi,Amos,

    The config.log content:

configure:6175: checking simplified host os
configure:6184: result: freebsd (version 10.0)
configure:6649: checking if g++ supports C++0x features without additional flags
configure:6686: c++ -c -g -O2 -march=native  conftest.cpp >&5
conftest.cpp:15:21: error: expected parameter declarator
      static_assert(sizeof(int) <= sizeof(T), "not big enough");
                    ^
conftest.cpp:15:21: error: expected ')'
conftest.cpp:15:20: note: to match this '('
      static_assert(sizeof(int) <= sizeof(T), "not big enough");
                   ^
conftest.cpp:15:7: error: C++ requires a type specifier for all declarations
      static_assert(sizeof(int) <= sizeof(T), "not big enough");
      ^~~~~~~~~~~~~
conftest.cpp:18:29: error: a space is required between consecutive right angle brackets (use '> >')
    typedef check<check<bool>> right_angle_brackets;
                            ^~
                            > >
conftest.cpp:21:5: error: unknown type name 'decltype'
    decltype(a) b;
    ^
conftest.cpp:21:16: error: expected ';' after top level declarator
    decltype(a) b;
               ^
               ;
conftest.cpp:25:15: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
    check_type&& cr = static_cast<check_type&&>(c);
              ^
conftest.cpp:25:45: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
    check_type&& cr = static_cast<check_type&&>(c);
                                            ^
2 warnings and 6 errors generated.






Simon






于 14-2-18 19:16, Amos Jeffries 写道:
  grep "checking simplified host os" config.log

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