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Re: Why should we not use GCC 4.0 for deployment on systems earlier than Mac OS X 10.3.9?
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Re: Why should we not use GCC 4.0 for deployment on systems earlier than Mac OS X 10.3.9?


  • Subject: Re: Why should we not use GCC 4.0 for deployment on systems earlier than Mac OS X 10.3.9?
  • From: Nick Zitzmann <email@hidden>
  • Date: Mon, 27 Jun 2005 18:40:13 -0600


On Jun 27, 2005, at 5:40 PM, João Varela wrote:

I have been reading the documentation of GCC to see the caveats of this compiler and I really wanted to start using GCC 4.0 because it makes smaller code at faster compiling speeds. However, the docs state that we SHOULD NOT use GCC 4.0 if we want to deploy on systems earlier than Mac OS X 10.3.9. It is not said we CANNOT, only that we SHOULDN'T. My question is: why shouldn't we?

When linking binaries, GCC 4 does two things very differently from 3.3:

1. GCC 4 links C++ code to a shared libstdc++ library; GCC 3.3 uses a static library instead.
2. GCC 4 links all code to libmx; GCC 3.3 does not unless otherwise requested.


#1 breaks the app on versions of Mac OS X prior to 10.3.9, which don't have a dynamic C++ library. #2 breaks the app on versions of Mac OS X prior to 10.3.0, which don't have libmx.

Nick Zitzmann
<http://seiryu.home.comcast.net/>
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 >Why should we not use GCC 4.0 for deployment on systems earlier than Mac OS X 10.3.9? (From: João Varela <email@hidden>)

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