It was indeed a type issue. In creating a test file to send to you, I discovered that there is nothing wrong with Boost, it was a naming conflict with libc's signal(...). When I use either boost::signal or remove the header that defines libc signal, the problem disappears. Thank you for your help. Best, Austin On 2/12/07, Sebastien Fortier <sebastien.fortier@ec.gc.ca> wrote:

Could it be that you forgot an include or a using namespace directive? Usually when I get "ISO C++ forbids delcaration of sometype with no type" I simply forgot to include the type.

Pedro Lamarão wrote: Austin Shoemaker escreveu:

I can't find this in the documentation or on the web, surprisingly, so I thought I'd ask here:

Should I be able to use "preferred syntax" with boost::signal using GCC 4.0? I get "ISO C++ forbids delcaration of 'signal' with no type" errors, and portable syntax works fine.

Can you provide the problematic code with compiler output?

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Sébastien Fortier

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