Date:	Mon, 12 Dec 1994 17:31:41 -0500 (CDT)
From:	Aaron Ucko <UCKO AT VAX1 DOT ROCKHURST DOT EDU>
Subject:	Re: complex.h
To:	sorokin AT ps1 DOT iaee DOT tuwien DOT ac DOT at
Cc:	djgpp AT sun DOT soe DOT clarkson DOT edu
Organization:	Rockhurst College; Kansas City, MO

>[I am new to this list, so excuse me if the subject has already been
>beaten to death...]
not completely...:-)
>First, it reported "class under-defined" or alike at compile time.
>Tracing the problem, I found out that file "complex.h" was
>UNIX-type, i.e. it #included "Complex.h", which is obviously useless
>under DOS. OK, a solution was to copy "complex.h" from older DJGPP,
>which correctly included "_complex.h" [if this bug has not been
>revealed yet, consider the message as bug report].
strclass.h also is broken--it requests String.h unconditionally.
What happened here?

>After this, compiler got satisfied, but now linker generates errors
>that all functions defined in "_complex.h" are not referenced. I
>checked, that libgpp is being found and used (omitting -lgpp produces
>errors about stream functions not being found). Browsing libgpp.a it
>is possible to find a lot of "...Complex..." references, i.e. Complex
>has been compiled into libgpp.a.
Did you remember to compile with optimization?  GCC won't inline _any_
functions unless you optimize, and tries instead to find the compiled
version of the functions in the library (to avoid compiling them
multiple times and causing linkage problems...)  This problem comes
up more often wrt the iostream stuff---I'm surprised all the necessary
iostream functions were found.

>Now I am totally confused. The only explanation I see is that
That optimization misfeature is rather counterintuitive...don't
worry. :-)

--- Aaron Ucko (ucko AT vax1 DOT rockhurst DOT edu; finger for PGP public key) -=- httyp!
-=*=-Just because you're paranoid doesn't mean they aren't out to get you.-=*=-
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