In file included from C:/msys64/mingw64/include/c++/4.9.0/x86_64-w64-mingw32/bits/gthr-default.h:35:0,
                 from C:/msys64/mingw64/include/c++/4.9.0/x86_64-w64-mingw32/bits/gthr.h:148,
                 from C:/msys64/mingw64/include/c++/4.9.0/ext/atomicity.h:35,
                 from C:/msys64/mingw64/include/c++/4.9.0/bits/basic_string.h:39,
                 from C:/msys64/mingw64/include/c++/4.9.0/string:52,
                 from test.cpp:1:
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected unqualified-id before '{' token
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected ')' before '{' token
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected primary-expression before 'struct'
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected '}' before 'struct'
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected constructor, destructor, or type conversion before ';' token
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: '___tmp_tm' does not name a type
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected unqualified-id before 'if'
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: '___tmp_tm' does not name a type
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:752:12: error: expected unqualified-id before ')' token
 struct tm *gmtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected unqualified-id before '{' token
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected ')' before '{' token
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected primary-expression before 'struct'
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected '}' before 'struct'
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected constructor, destructor, or type conversion before ';' token
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: '___tmp_tm' does not name a type
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected unqualified-id before 'if'
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: '___tmp_tm' does not name a type
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
C:/msys64/mingw64/include/ruby-2.1.0/ruby/win32.h:753:12: error: expected unqualified-id before ')' token
 struct tm *localtime_r(const time_t *, struct tm *);
            ^
In file included from C:/msys64/mingw64/include/ruby-2.1.0/ruby/ruby.h:29:0,
                 from C:/msys64/mingw64/include/ruby-2.1.0/ruby.h:33,
                 from test.cpp:2:
C:/msys64/mingw64/include/ruby-2.1.0/ruby/defines.h:321:1: error: expected declaration before '}' token
 }  /* extern "C" { */
 ^