[cfe-dev] linking question

[रजनीश]

-lstd++ was it.

Thanks.

On Mar 29, 2009, at 8:23 PM, Shantonu Sen wrote:

> This is correct behavior. If you have any C++ object files, you  
> should use g++ (or whatever c++ compiler you used) for linking,  
> since it will likely implicitly add libraries like the standard C++  
> library. Alternatively, you can try using clang for the link and  
> adding -lstdc++, but there may be other things necessary.
>
> Shantonu
>
> Sent from my MacBook
>
> On Mar 29, 2009, at 8:06 PM, रजनीश wrote:
>
>> Sorry for what might be naive question.
>>
>>
>> So I have the following command:
>>
>> /usr/bin/g++ -I. -I./include -I/usr/include/libxml2 -arch i386 -fno-
>> common -pipe -O3 -g -Wall -fexceptions -Wno-parentheses -Wno-
>> deprecated-declarations -Werror array.o bignum.o class.o compar.o
>> complex.o enum.o enumerator.o error.o eval.o file.o load.o proc.o  
>> gc.o
>> hash.o inits.o io.o math.o numeric.o object.o pack.o parse.o prec.o
>> dir.o process.o random.o range.o rational.o re.o regcomp.o regenc.o
>> regerror.o regexec.o regparse.o regsyntax.o ruby.o set.o signal.o
>> sprintf.o st.o string.o struct.o time.o transcode.o util.o variable.o
>> version.o thread.o id.o objc.o bs.o encoding.o main.o dln.o dmyext.o
>> enc/ascii.o vm_eval.o miniprelude.o gc-stub.o roxor.o -L/Volumes/ 
>> Rafi/
>> llvm/Release/lib  -lpthread -lm /Volumes/Rafi/llvm/Release/lib/
>> LLVMX86CodeGen.o -lLLVMSelectionDAG -lLLVMAsmPrinter /Volumes/Rafi/
>> llvm/Release/lib/LLVMExecutionEngine.o /Volumes/Rafi/llvm/Release/ 
>> lib/
>> LLVMJIT.o -lLLVMCodeGen -lLLVMScalarOpts -lLLVMTransformUtils -
>> lLLVMipa -lLLVMAnalysis -lLLVMTarget -lLLVMCore -lLLVMSupport -
>> lLLVMSystem -lpthread -ldl -lxml2 -lobjc -lffi -lauto -framework
>> Foundation -o miniruby
>>
>>
>> And when I replace g++ with clang, I get a lot of unresolved symbols
>> pertaining to c++ objects in one .o file (rest of .o are created via
>> clang).
>> Is this reasonable or am I doing something wrong?
>>
>> I did notice that -flto and -O4 is disabled in clang.  Is this going
>> to be in for 1.0?
>> I want to try to see if it makes any difference on the above.  Do I
>> need to update my system ld with what?
>> _______________________________________________
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>