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Re: AC_LANG_FUNC_LINK_TRY(C): stub detection fails with ICC 10.1

From: Eric Blake
Subject: Re: AC_LANG_FUNC_LINK_TRY(C): stub detection fails with ICC 10.1
Date: Wed, 24 Dec 2008 06:53:21 -0700
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According to Aaron Ucko on 12/22/2008 9:45 AM:
> I have observed that AC_FUNC_LINK_TRY(C), which serves as the guts of
> AC_CHECK_FUNCS, can inappropriately return "yes" for functions which are
> merely stubs when building with version 10.1 of Intel's C/C++ compiler
> (ICC) on x86_64-linux-gnu systems (and perhaps also other versions).

Thanks for the report.  However, we could use some more information, to
help us better figure out how to resolve this issue.

Can you please post a simple testcase that is linking successfully with
your compiler, but where you want the failure to occur because the link is
only against a stub?  Seeing the actual command line and compiler output
is a big plus here.  How does adding the header <gnu/stubs.h> change
things to a link failure?  Again, seeing an actual program, and actual
compiler behavior, goes a lot further than a vague description.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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