[Mingw-users] suddenly - undefined reference to operator new

[Jean-Claude G. <jc....@vi...>]

Hi,

With MinGW, I've been able to build a DLL that used the STL in the past
but after updating to

i686-pc-mingw32-g++ --version
i686-pc-mingw32-g++ (Gentoo 4.5.4 p1.0, pie-0.4.7) 4.5.4

I now get errors like this:

i686-pc-mingw32-g++ -O2 -fno-strength-reduce -fno-strict-aliasing
-fno-exceptions -std=c++0x  -Iinc -I../include
-I/usr/i686-pc-mingw32/usr/include -I/usr/i686-pc-mingw32/usr/include
-DWINDOWS -D_WINDOWS -DWIN32 -D_M_IX86     -Wall   -c -o libmain.o
libmain.cpp

i686-pc-mingw32-g++ -o ./libdbgtrace.so -shared -lstdc++ libmain.o
-lwsock32 -Wl,--no-undefined -Wl,-soname,libdbgtrace.so
libmain.o:libmain.cpp:(.text+0x80): undefined reference to `operator
delete(void*)'
libmain.o:libmain.cpp:(.text
$_ZNSt6vectorIcSaIcEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPcS1_EEjRKc[std::vector<char, std::allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, std::allocator<char> > >, unsigned int, char const&)]+0x71): undefined reference to `operator new(unsigned int)'
libmain.o:libmain.cpp:(.text
$_ZNSt6vectorIcSaIcEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPcS1_EEjRKc[std::vector<char, std::allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, std::allocator<char> > >, unsigned int, char const&)]+0xea): undefined reference to `operator delete(void*)'
libmain.o:libmain.cpp:(.text
$_ZNSt6vectorIcSaIcEE14_M_fill_insertEN9__gnu_cxx17__normal_iteratorIPcS1_EEjRKc[std::vector<char, std::allocator<char> >::_M_fill_insert(__gnu_cxx::__normal_iterator<char*, std::vector<char, std::allocator<char> > >, unsigned int, char const&)]+0x205): undefined reference to `std::__throw_length_error(char const*)'


I don't get it, the DLL compiled/linked/ran fine before and now after
updating I get this.

Can someone please tell me what I am doing wrong?

Thank you!