Hi!

I'm trying to compile DUI, but for some reason a
forward reference error pops up.

Using 0.72 or 0.73 I get this:

dmd -Isrc/   -ofsrc/dui/ImageMenuItem.obj -c src/dui/ImageMenuItem.d

src\dui\CheckMenuItem.d: class CheckMenuItem forward reference of base class MenuItem

What does this message really mean?
Why do this come up when compiling ImageMenuItem? CheckMenuItem
compiled without problems.
And since this is the last DUI-release, I guess that this must have compiled
elsewhere.

Lars Ivar Igesund

In article <bkhn85$1o4m$1@digitaldaemon.com>, Lars Ivar Igesund says...
>
>Hi!
>
>I'm trying to compile DUI, but for some reason a
>forward reference error pops up.

That's a nightmare! I lost hours and end up redesigning some relations decause of forward references! :(

>
>Using 0.72 or 0.73 I get this:

DUI shouldn't compile with .73 because of the new & for functions.

what DUI build number do you have?


>
>dmd -Isrc/   -ofsrc/dui/ImageMenuItem.obj -c src/dui/ImageMenuItem.d
>
>src\dui\CheckMenuItem.d: class CheckMenuItem forward reference of base class MenuItem
>
>What does this message really mean?

I wich I new...

try to go the Makefile and move the line
$(SRCDIR)dui/MenuItem	   \
to a position before the line
$(SRCDIR)dui/CheckMenuItem          \

this will probably result in that forawrd reference being replaced by a different forward reference... :(


>Why do this come up when compiling ImageMenuItem? CheckMenuItem
>compiled without problems.
>And since this is the last DUI-release, I guess that this must have compiled
>elsewhere.

so I guess you have
Version 00.04 build 61 (2003/09/09)

I'll make a new release for dmd 0.73, make sure there
are no problems compiling it, and make an announcement here.
(need a few of hours though, can't work on it right now. grab a chair... )

However we still need help in understanding the forward reference problem, why? and what to do to fix it?

Ant

In article <bkhn85$1o4m$1@digitaldaemon.com>, Lars Ivar Igesund says...
>
>Hi!
>
>I'm trying to compile DUI, but for some reason a
>forward reference error pops up.
>
>Using 0.72 or 0.73 I get this:
>
>dmd -Isrc/   -ofsrc/dui/ImageMenuItem.obj -c src/dui/ImageMenuItem.d
>
>src\dui\CheckMenuItem.d: class CheckMenuItem forward reference of base class MenuItem
>
>What does this message really mean?
>Why do this come up when compiling ImageMenuItem? CheckMenuItem
>compiled without problems.
>And since this is the last DUI-release, I guess that this must have compiled
>elsewhere.
>
>Lars Ivar Igesund
>
>

I dropped the current development into the night build page It supports DMD 0.73 and doesn't have a problem with forward references (but neither had the other version)

Ant

"Ant" <Ant_member@pathlink.com> wrote in message

> I dropped the current development into the night build page It supports DMD 0.73 and doesn't have a problem with forward references (but neither had the other version)

I guess I forgot to mention that I'm trying on windows. My point wasn't really that it was a problem with DUI (since I'm experimenting with the build system used; I'm no fan of make), but that I still don't grok the error message.

I know what a forward reference is, but I don't understand
why it comes up here. (The error message is bad, btw. It don't
even say that it is an error and no hint to how the problem can
be fixed.)

If i clear out all compiled objectfiles, removes CheckMenuItem.d
(CMI) and compile MenuItem.d (MI) only, I get a read error because
CMI isn't there. But MI don't use CMI, it's CMI that use MI.
There might be some strange circular reference somewhere, but that
should not be a problem since all imported modules with the private
attribute. Maybe

private import foo;

is buggy?

Lars Ivar Igesund

"Lars Ivar Igesund" <larsivi@stud.ntnu.no> wrote in message news:bkmeds$bf2$1@digitaldaemon.com...
> I know what a forward reference is, but I don't understand
> why it comes up here. (The error message is bad, btw. It don't
> even say that it is an error and no hint to how the problem can
> be fixed.)

It's usually when two classes mutually refer to each other, requiring more info than just the name of the class.