using the signals lib

From: Roel Vanhout (roel_at_[hidden])
Date: 2003-07-23 12:26:37

Hello all,

I'm sorry if this is a faq (it almost has to be) but I couldn't find 
anything in the signals documentation nor in the general build instruction.
I've build the signals library using jam as described in the build 
instructions, I've added the resulting library to my linker list but 
then I get the errors below about several symbols being multiply 
defined. I'm using MSVC 7.0 (Visual Studio .Net, not .Net 2003). What do 
I do wrong? Thanks.

cheers,

roel

------ Build started: Project: boost_signaltest, Configuration: Debug 
Win32 ------

Linking...
msvcprt.lib(MSVCP70.dll) : error LNK2005: "public: __thiscall 
std::basic_string<char,struct std::char_traits<char>,class 
std::allocator<char> >::basic_string<char,struct 
std::char_traits<char>,class std::allocator<char> >(class 
std::basic_string<char,struct std::char_traits<char>,class 
std::allocator<char> > const &)" 
(??0?$basic_string_at_DU?$char_traits_at_D@std@@V?$allocator_at_D@2@@std@@QAE_at_ABV01@@Z) 
already defined in boost_signaltest.obj
msvcprt.lib(MSVCP70.dll) : error LNK2005: "public: __thiscall 
std::basic_string<char,struct std::char_traits<char>,class 
std::allocator<char> >::~basic_string<char,struct 
std::char_traits<char>,class std::allocator<char> >(void)" 
(??1?$basic_string_at_DU?$char_traits_at_D@std@@V?$allocator_at_D@2@@std@@QAE_at_XZ) 
already defined in boost_signaltest.obj
msvcprt.lib(MSVCP70.dll) : error LNK2005: "public: __thiscall 
std::basic_string<char,struct std::char_traits<char>,class 
std::allocator<char> >::basic_string<char,struct 
std::char_traits<char>,class std::allocator<char> >(char const *)" 
(??0?$basic_string_at_DU?$char_traits_at_D@std@@V?$allocator_at_D@2@@std@@QAE_at_PBD@Z) 
already defined in boost_signaltest.obj
MSVCRT.lib(MSVCR70.dll) : error LNK2005: "public: __thiscall 
exception::exception(void)" (??0exception@@QAE_at_XZ) already defined in 
LIBCD.lib(stdexcpt.obj)
MSVCRT.lib(MSVCR70.dll) : error LNK2005: "public: virtual __thiscall 
exception::~exception(void)" (??1exception@@UAE_at_XZ) already defined in 
LIBCD.lib(stdexcpt.obj)
MSVCRT.lib(MSVCR70.dll) : error LNK2005: "public: __thiscall 
exception::exception(class exception const &)" 
(??0exception@@QAE_at_ABV0@@Z) already defined in LIBCD.lib(stdexcpt.obj)
MSVCRT.lib(MSVCR70.dll) : error LNK2005: "public: int __thiscall 
type_info::operator==(class type_info const &)const " 
(??8type_info@@QBEHABV0@@Z) already defined in LIBCD.lib(typinfo.obj)
MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: __thiscall 
type_info::type_info(class type_info const &)" 
(??0type_info@@AAE_at_ABV0@@Z) already defined in LIBCD.lib(typinfo.obj)
MSVCRT.lib(ti_inst.obj) : error LNK2005: "private: class type_info & 
__thiscall type_info::operator=(class type_info const &)" 
(??4type_info@@AAEAAV0_at_ABV0@@Z) already defined in LIBCD.lib(typinfo.obj)
LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other 
libs; use /NODEFAULTLIB:library
Debug/boost_signaltest.exe : fatal error LNK1169: one or more multiply 
defined symbols found

Build log was saved at 
"file://c:\test\boost_signaltest\boost_signaltest\Debug\BuildLog.htm"
boost_signaltest - 10 error(s), 1 warning(s)

---------------------- Done ----------------------

     Build: 0 succeeded, 1 failed, 0 skipped

-- 
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RIKS BV
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