Re: [Gm2] GM2 - circular dependancies ?

[Iztok Kobal]

Manhart Matthias wrote:

> Hello,
>
> i would like to port a rather large Modula-Project (Logitech Modula-2
> Release 4.0) to GM2. I started with some basic modules 
>
> and detected the following problem:
>
> --------------- test.def ---------------
> DEFINITION MODULE test;
> TYPE
>  test_type   = CARDINAL;
>  Error_Proc  = PROCEDURE(ARRAY OF CHAR, ARRAY OF CHAR);

As I have understood our latest correspondence, Mr. Gaius just works on 
faulty gm2 behaviour regarding procedure types.

I would use GM2 myself, especially becouse of the latest crosscompile 
support, but I have ISO M2 code strongly relying on large bitsets (which 
have only recently being implemented) and procedure types (which is 
unstable so far, as you experience yourself). I also need shared objects 
support which is not implemented into the GM2 comp/lang extensions 
(AFAIK, but may be wrong). So, I advise you to check thoroughly the 
status of the GM2 before you use it, especially since it relies on the 
PIM2 instead of the ISO (which I think Logitech M2 4.0 already is in 
some extent). And I advise you to check your demands directly with Gaius.

You can also strongly contribute by trying to recompile your code and 
find some more errors for Gaius and other guys working on the GM2.

I.

> END test.
>
> --------------- test.mod ---------------
> IMPLEMENTATION MODULE test;
> VAR
>  xError_Procedure : Error_Proc;
> BEGIN
>  (* empty *)
> END test.
>
> --------------- hello.mod ---------------
> MODULE hello;
> FROM StrIO IMPORT WriteString, WriteLn ;
> FROM test IMPORT test_type;
> BEGIN
>  WriteString('hello world') ; WriteLn;
> END hello.
>
> --------------- makefile ----------------
> all: force
> gm2 -o hello -Wbounds -Wreturn -g -I. -Wmake-I=. -Wmakeall hello.mod
>
> clean:
> $(RM) *.o a.out
>
> force:
>
> -----------------------------------------
>
> When i run the makefile, i get the following error:
>
> gm2 -o hello -Wbounds -Wreturn -g -I. -Wmake-I=. -Wmakeall hello.mod
> make[1]: Entering directory `/home/hello'
> gm2 -c -Wmakeall0 -g -Wbounds -Wreturn -Wmake-I=. -Wmakeall
> -I.:/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.2/gm2 hello.mod
> internal error: circular type dependancy on symbol Error_Proc 
>
> (82)../../gm2-20021105+gcc-3.2/gcc/gm2/gm2-compiler/M2GCCDeclare.mod:336
> :*** internal error *** circular dependancies within 
>
> above types
> make[1]: Leaving directory `/home/hello'
>
> The code is correct. Can someone help me ?
>
> Thanks
>
> Matthias Manhart
> Switzerland
>
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