Re: [Boost-users] Compile error of data_time

On Wed, 8 Dec 2004 14:56:5 +0800, zhengyi wrote

boost-users: Here is a new user's letter for help:

when i compile the whole boost(version_1_32_0), it show some error of data_time.

the file greg_month.cpp failed. in the lexical_cast.hpp£¬line 126 string_type s(boost::lexical_cast("not-a- date-time"));

the compiler said : binary '>>' : no operator found which takes a right-hand operand of type_put::string_type' (or there is no acceptable conversion)

When tracing down the error message, I found that [[date_names_put::string_type]] actually means [[std::basic_string<charT>]] and in file lexical_cast.hpp line 146 -- 168 there are right overload of operator>>. Why the compiler complain about can't find the wellformed operator?

I believe this to be related to STLport and it's support for wchar_t somehow. My only real suggestion is to play with the configuration. One thing you can try is to set BOOST_NO_STD_WSTRING when you try to compile date-time. That will make sure that date-time doesn't try to use wchar_t. A bit more drastic would be to set BOOST_DATE_TIME_INCLUDE_LIMITED_HEADERS. See boost/date_time/compiler_config.hpp. There you will see that under certain conditions we set that // workaround for errors associated with output for date classes // modifications and input streaming for time classes. // Compilers affected are: // gcc295, msvc (neither with STLPort), any borland // #if (((defined(__GNUC__) && (__GNUC__ < 3)) || \ (defined(_MSC_VER) && (_MSC_VER <= 1200)) ) && \ !defined(_STLP_OWN_IOSTREAMS) ) || \ defined(__BORLANDC__) #define BOOST_DATE_TIME_INCLUDE_LIMITED_HEADERS #endif It's possible there are times with STLPort that this needs to be set.

My Compiler is msvc71 and STLport-5.0-0125 was installed with it's own iostream.

the cmdline is

bjam "-sVC71_ROOT=D:\Program Files\Microsoft\Microsoft Visual Studio .NET 2003\Vc7" "-sSTLPORT_PATH=D:\Program Files\Programming_Tools\STLport-5.0-0125\stlport" "-sSTLPORT_5.0- 0125_PATH=D:\Program Files\Programming_Tools\STLport-5.0-0125" "- sSTLPORT_VERSIONS=5.0-0125" "-sTOOLS=vc-7_1-stlport" "- -prefix=D:\Program Files\Programming_Tools\Boost_1_32" install - -with-date_time

this problem has killed so many brain cells of mine !

Sorry to hear that :-( Jeff