From: 7stud -- <bbxx789_05ss@...>
Date: 2008-03-21T10:55:27+09:00
Subject: Re: extending ruby with C++

7stud -- wrote:
> Michael Neumann wrote:
>> 7stud -- wrote:
>>>>> $ make
>>>>> cc  -bundle  -L"/usr/lib" -o Test.bundle Test.o  -lruby  -lpthread -ldl
>>>>> -lobjc
>>>> use c++ or add -lstdc++.
>>>>
>>> 
>>> I don't know what that means.
>> 
>> "cc" is usually used to compile C programs. Use the command-line tool
>> "c++" (or "g++") instead for C++. 
> 
> How?  Where?  There is no mention of cc in extconf.rb.
> 
>>"cc" will determine that you are
>> compiling C++ code, but it will not add the standard C++ library 
>> (-lstdc++).
>> 
>> Add the following line to your extconf.rb file:
>> 
>>    $LIBS << " -lstdc++"
>> 
>> Before the call to "create_makefile"!
>> 
> 
> I tried adding that line to extconf.rb before the create_makefile() 
> line, but I get the same error.
> 
> ??

Here's the error:

$ ruby extconf.rb
creating Makefile

$ make
cc  -bundle  -L"/usr/lib" -o Test.bundle Test.o  -lruby  -lpthread -ldl 
-lobjc   -lstdc++
/usr/bin/ld: Undefined symbols:
__Unwind_Resume
collect2: ld returned 1 exit status
make: *** [Test.bundle] Error 1


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