On Tue, Jan 29, 2013 at 3:50 PM, Faré <fahree@gmail.com> wrote:
For that, I want to properly handle forward reference warnings from
files that are *not* being (re)compiled in the current session but
have been in a previous one. And so on supported implementations
(currently CCL, SBCL), I am saving the deferred warnings about such
forward references. Could you help me do that with ECL?

Perhaps I am a bit confused. I never really understood the purpose of WITH-COMPILATION-UNIT http://clhs.lisp.se/Body/m_w_comp.htm The text says

"actions deferred by the compiler until the end of compilation will be deferred until the end of the outermost call to with-compilation-unit."

But since ECL really does not defer any action, but rather shows warnings as it goes, I never saw how to make it really useful.

In particular I do not understand what it means "properly handle forward reference warnings". Is this about missing variables, functions and macros? So you want to save all warnings from a compiled file so that it can be output together with all the warnings of all newly compiled files at the end of a system?

That kind of means that you are going to tweak WITH-COMPILATION-UNIT, but I do not see what would you do with the warnings in ECL because, as I said, they are not collected for later use, they are just output as the compiler proceeds.

Juanjo

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