[LLVMdev] LLVM built on VS C++ 2005

[Jeff Cohen]

The answer to this FAQ question implies the answer is no.  It relies on 
g++ header files and libraries for STL support.  Microsoft does not 
implement STL using "libstdc++"; g++ does.

Why is my C++ binary so large?

C++ programs using the Standard Template Library (ie/ #include 
<iostream>) cause a large part of the library to be statically linked 
into the binary. The need to statically link the stdc++ into the binary 
is two fold. First MSVCRT.dll does not contain C++ stdlib constructs. 
Second the legal implications of generating a libstdc++.dll are 
restricted by the licensing associated with the library.


Jeff Cohen wrote:

> I'm afraid that still does not completely answer the question.  I'll 
> accept that it will work for C programs, given what you quote.  It 
> says nothing about C++ however.  That's a different animal entirely.  
> g++ mangles names in a completely different fashion than VC++.  Does 
> mingw use VC++ style mangling?  g++ processes exceptions in a 
> completely different fashion than VC++.  I think you get the picture :)
>
> Adam Treat wrote:
>
>> On Friday 18 February 2005 11:40 am, Jeff Cohen wrote:
>>  
>>
>>> I'm not sure you understand the problem.    
>>
>>
>> I wouldn't be surprised :)
>>
>>  
>>
>>> Are you saying that a file compiled with mingw can catch an 
>>> exception thrown by a file compiled
>>> with VC++ when the two are linked into a single program?  That a 
>>> program
>>> compiled with mingw can be linked against the VC++ runtime and *not* 
>>> the
>>> mingw/gcc runtime?
>>>   
>>
>>
>> AFAIK, mingw _does_ link against the MS runtime.
>>
>> mingw32 allows "one to produce native Windows programs that do not 
>> rely on any 3rd-party C runtime DLLs." ^1
>>
>> mingw32 "uses Microsoft's runtime (either CRTDLL.DLL or MSVCRT.DLL) 
>> for all services, and you get no more and no less than what Microsoft 
>> provides." ^2
>>
>> 1) http://www.mingw.org/
>> 2) 
>> http://www.xraylith.wisc.edu/~khan/software/gnu-win32/x86-win32-ports.html 
>>
>>
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>>  
>>
>
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