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Re: Compilation problems on Ubuntu 64-bit

by Ian Lance Taylor-3 :: Rate this Message:

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Marcus Clyne <maccaday@...> writes:

> I've got it to work, by adding a 'main' function to my shared object code.
>
> I don't understand why I need to do this though.  I didn't think that
> main' functions were required in shared objects, and when I compile
> using the shell, it compiles ok without one.  When I used the same
> code on my old system, it worked without needing to add one, even in
> the exec function executions.
>
> Could this be a bug in GCC?  The version I'm using currently is 4.3.3.
>
> Alternatively, is there another option I should add when using exec
> functions to call GCC to prevent the need for adding 'main' functions?

If gcc works as you expect when invoked from the shell, then I don't
think it can be a bug in gcc.  I think it must be a bug in the way that
you are invoking it from your program.  Or maybe you have a shell alias
or something, who knows.

There is nothing magic about exec.  The shell uses exec also.  gcc does
not behave differently when invoked via exec or via the shell--it can't.

Ian

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