Re: Building for Microsoft Windows using MSYS

[Benjamin Lindner]

Tatsuro MATSUOKA wrote:
> Hello
>
> > undefined reference to `_imp___ZNSt9exceptionD2Ev'
> > Magick++/lib/.libs/Exception.o:Exception.cpp:(.text+0x93): undefined 
>
> I have also met this problem.
>
> http://old.nabble.com/undefined-reference-to-%60_imp___ZTVSt9bad_alloc-and-_imp___ZNSt9bad_allocD1Ev-to27337166.html
>
> Thank you for your information to
>
> > https://sourceforge.net/tracker/?func=detail&aid=2836185&group_id=2435&atid=102435
> > Does the suggested solution in the bug tracker help you here?
>
> I have a look into the above.
>
> Is 'A workaround is to remove the decorations from those system headers.'
> the suggested solution?
>
> How can I stop decoration with __attribute__((dllimport)) only to
>
> exception
> bad_exception
> bad_alloc
> bad_cast
> bad_typeid
>
> by --D_GLIBCXX_DLL ?
>
> Is something like
>
> #ifdef _GLIBCXX_DLL
> #undef _GLIBCXX_DLL 
> throw std::exception();
> #redef _GLIBCXX_DLL
> #endif
>
> modification of the source code required?

Sorry I wasn't being too clear. No as I interpret the suggestion in the 
bug tracker, it's to simply remove the "_GLIBCXX_IMPORT" decoration from 
the class definition in the headers exception, new, and typeinfo.
E.g. something like
sed -i -e "address@hidden address@hidden @g" 
/path/to/gcc/include/c++/exception
sed -i -e "address@hidden address@hidden @g" /path/to/gcc/include/c++/new
sed -i -e "address@hidden address@hidden @g" 
/path/to/gcc/include/c++/typeinfo

benjamin