From: Steve Peters <steve@...>
Date: 2006-03-09T05:26:34+09:00
Subject: Re: Ruby c++ extension on intel mac

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On Thu, Mar 09, 2006 at 05:04:33AM +0900, Gareth Reeves wrote:
> Hey,
>=20
> I am having trouble building an extension on a new intel mac. The=20
> extension I have at the moment is simple, basically the example out of=20
> the big ruby book.
>=20
> The error I get when building is
>=20
> macbook:~/projects/extension_shared_ptr_test reevesg$ make
> cc  -bundle  -L"/usr/lib" -o Extension.bundle extension.o   -lruby=20
> -lpthread -ldl -lobjc
> /usr/bin/ld: Undefined symbols:
> ___gxx_personality_v0
> collect2: ld returned 1 exit status
> make: *** [Extension.bundle] Error 1
> macbook:~/projects/extension_shared_ptr_test reevesg$
>=20
> I think i may need to build my ruby from scratch because this sounds=20
> like a gcc incompatibility to me.
>=20
> Here is my gcc output
>=20
> macbook:~/projects/extension_shared_ptr_test reevesg$ gcc -v
> Using built-in specs.
> Target: i686-apple-darwin8
> Configured with: /private/var/tmp/gcc/gcc-5250.obj~20/src/configure=20
> --disable-checking -enable-werror --prefix=3D/usr --mandir=3D/share/man=
=20
> --enable-languages=3Dc,objc,c++,obj-c++=20
> --program-transform-name=3D/^[cg][^.-]*$/s/$/-4.0/=20
> --with-gxx-include-dir=3D/include/c++/4.0.0 --build=3Dpowerpc-apple-darwi=
n8=20
> --with-arch=3Dpentium-m --with-tune=3Dprescott --program-prefix=3D=20
> --host=3Di686-apple-darwin8 --target=3Di686-apple-darwin8
> Thread model: posix
> gcc version 4.0.1 (Apple Computer, Inc. build 5250)
> macbook:~/projects/extension_shared_ptr_test reevesg$
>=20
> Anyone got any ideas on how to proceed? Is there a ruby extensions list=
=20
> or IIRC channel somewhere. I could definitely use the help.
>=20

On my iBook, ___gxx_personality_v0 is in libstdc++.dylib.  Maybe you
need to add an explicit -lstdc++ to compile it.

Steve Peters
steve@fisharerojo.org=20

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