[R-SIG-Mac] [MacOS] C++ compilation on macos

[Simon Urbanek]

Sean,

you seem to have conflicting compilers in your system. You have some  
compiler (g77? gfortran?) in /usr/local that conflicts with system  
compilers. You should remove the offending compiler, otherwise you  
won't be able to compile any packages at all. More precisely you  
cannot use dynamic /usr/local/lib/libgcc* as it conflicts with  
system's libgcc.

Cheers,
Simon

On Jan 9, 2006, at 9:47 AM, Sean Davis wrote:

> I am trying to compile a single c++ file into a shared library  
> using R CMD
> SHLIB.  I am able to compile a simple executable using the same code.
> However, I get the following output when compiling using R CMD  
> SHLIB.  I am
> hoping that some of the Mac gurus can give me a hint about what  
> might be
> going on.  I can find plenty of folks having similar problems in other
> contexts, but no solutions.  I am using MacOS 10.4.3, g33/g++ 3.3,  
> and R
> 2.2.0.
>
> Thanks,
> Sean
>
>
> G++ version specifics:
>
> holmes: sdavis$ g++ --version
> g++ (GCC) 3.3 20030304 (Apple Computer, Inc. build 1809)
> Copyright (C) 2002 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.   
> There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR  
> PURPOSE.
>
> Output of R CMD SHLIB....
>
> holmes:~/Mercury/projects/R/StepGram/StepGram/src sdavis$ R CMD SHLIB
> Stepgram.cpp
> g++ -no-cpp-precomp -I/Users/sdavis/R-devel2/R.framework/Resources/ 
> include
> -I/sw/include -I/usr/local/include   -fno-common  -g -O2 -c  
> Stepgram.cpp -o
> Stepgram.o
> g++ -bundle -flat_namespace -undefined suppress -L/sw/lib -L/usr/ 
> local/lib
> -o Stepgram.so Stepgram.o  -lcc_dynamic -framework R
> ld: multiple definitions of symbol __Unwind_GetRegionStart
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_GetRegionStart in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_GetRegionStart
> ld: multiple definitions of symbol __Unwind_DeleteException
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_DeleteException in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_DeleteException
> ld: multiple definitions of symbol __Unwind_FindEnclosingFunction
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_FindEnclosingFunction in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_FindEnclosingFunction
> ld: multiple definitions of symbol __Unwind_ForcedUnwind
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_ForcedUnwind in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_ForcedUnwind
> ld: multiple definitions of symbol __Unwind_GetDataRelBase
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_GetDataRelBase in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_GetDataRelBase
> ld: multiple definitions of symbol __Unwind_GetGR
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_GetGR in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_GetGR
> ld: multiple definitions of symbol __Unwind_GetIP
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_GetIP in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_GetIP
> ld: multiple definitions of symbol __Unwind_GetLanguageSpecificData
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_GetLanguageSpecificData in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_GetLanguageSpecificData
> ld: multiple definitions of symbol __Unwind_GetTextRelBase
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_GetTextRelBase in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_GetTextRelBase
> ld: multiple definitions of symbol __Unwind_RaiseException
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_RaiseException in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_RaiseException
> ld: multiple definitions of symbol __Unwind_Resume
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_Resume in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_Resume
> ld: multiple definitions of symbol __Unwind_SetGR
> ld: multiple definitions of symbol __Unwind_SetIP
> /usr/lib/libcc_dynamic.a(unwind-dw2.o) private external definition of
> __Unwind_SetIP in section (__TEXT,__text)
> /usr/local/lib/libgcc_s.1.0.dylib(unwind-dw2_s.o) definition of
> __Unwind_SetIP
> make: *** [Stepgram.so] Error 1
>
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