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wing
Joined: 08 Mar 2005
Posts: 1
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 Posted: Tue Mar 08, 2005 7:29 pm Post subject: new to D, why won't this compile? (Symbol Undefined) |
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Edit: great, within minutes of me posting this I figure out that main just doesn't like to be in a class. meh.
I've been toying around lately with D, and I really like it so far. I decided to port a small app that I wrote in an old Java class, and for the life of me I can't figure out what's wrong. It will probably be something really obvious though, be my eyes!
Here is the source for DArray.d
| Code: | import std.stdio;
import std.random;
class DArray
{
public:
void main(char[][] args)
{
List arraylist = new List(10);
arraylist.print();
arraylist.fillWithRandom();
arraylist.print();
}
}
class List
{
private:
int[] intarray;
int total = 0;
public:
this(int numInts)
{
intarray.length = numInts;
for(int i = 0; i < intarray.length; i++)
intarray[i] = 0;
}
void fillWithRandom()
{
for(int i = 0; i < intarray.length; i++)
intarray[i] = rand() ? 50;
}
void print()
{
for(int i = 0; i < intarray.length; i++)
writef(intarray[i]);
writef("----");
}
}
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Here's what the compiler spits out:
| Code: | dmd array.d
C:\dmd\bin\..\..\dm\bin\link.exe array,,,user32+kernel32/noi;
OPTLINK (R) for Win32 Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved
OPTLINK : Warning 23: No Stack
array.obj(array)
Error 42: Symbol Undefined _D9invariant12_d_invariantFC6ObjectZv
array.obj(array)
Error 42: Symbol Undefined __d_newclass
array.obj(array)
Error 42: Symbol Undefined __d_arraysetlength
array.obj(array)
Error 42: Symbol Undefined __d_array_bounds
array.obj(array)
Error 42: Symbol Undefined _D3std6random4randFZk
array.obj(array)
Error 42: Symbol Undefined _D3std5stdio6writefFYv
array.obj(array)
Error 42: Symbol Undefined __init_11TypeInfo_Aa
array.obj(array)
Error 42: Symbol Undefined __init_10TypeInfo_i
array.obj(array)
Error 42: Symbol Undefined _D6object6Object8opEqualsFC6ObjectZi
array.obj(array)
Error 42: Symbol Undefined _D6object6Object5opCmpFC6ObjectZi
array.obj(array)
Error 42: Symbol Undefined _D6object6Object6toHashFZk
array.obj(array)
Error 42: Symbol Undefined _D6object6Object8toStringFZAa
array.obj(array)
Error 42: Symbol Undefined __Class_6Object
array.obj(array)
Error 42: Symbol Undefined __vtbl_9ClassInfo
array.obj(array)
Error 42: Symbol Undefined _D6object6Object5printFZv
array.obj(array)
Error 42: Symbol Undefined __nullext
array.obj(array)
Error 42: Symbol Undefined __ModuleInfo_3std5stdio
array.obj(array)
Error 42: Symbol Undefined __ModuleInfo_3std6random
OPTLINK : Warning 134: No Start Address
--- errorlevel 18
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Hope you guys can help me out, thanks in advance! |
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Derek Parnell
Joined: 22 Apr 2004
Posts: 408
Location: Melbourne, Australia
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| Posted: Wed Mar 09, 2005 3:10 am Post subject: |
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I assume you used
to compile this.
That is okay, except that dmd normally calls the linker after the compiler has run, and what you are seeing is a whole lot of messages from the linker.
The problem is that it is expecting that a main() will be present somewhere. So, either add the lines ..
or compile with the "-c" switch. That will do a compile-only run - no linker. |
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