Re: [ooc-compiler] Size of executable

[Stewart G. <sgr...@ii...>]

Hi Frank,

The large executable is probably due to the amount of code that you are 
importing from the OOC core libraries. Under Windows, "C" programs 
dynamically link to the equivalent "libc", so they are much smaller. 
For a comparison, try the "Example4" module in the Windows package (see 
VisualOberon CVS). It uses just Windows.MessageBoxA to output a 
message. From memory, this results in an executable that is about 60K 
in size (ie. basically the size of the statically linked GC). If you 
dynamically link the GC, it should be even smaller.

Currently, there is no support for building dynamic libraries under 
Windows. Microsoft's DLLs are idiosyncratic in that they need special 
compile-time treatment for libraries and their clients (eg. the 
requirements for dllimport/dllexport attributes on imported/exported 
functions).

AFAIK, Windows DLLs are still not supported by libtool, which is OOC's 
default tool for managing shared libraries. With a few specific 
assumptions (eg. that all functions exported from modules are are 
exported from the library), it should be possible to build and use DLLs 
under Windows using just the support that is now in GCC 3.

Cheers,
   Stewart

On Tuesday, June 1, 2004, at 03:45  AM, Frank Hrebabetzky wrote:

> Finally I get my programs compiled and running and my work done. So my 
> attention is attracted by less important aspects now (no more need to 
> respond within impressive 50 min.).
>
> I compiled 'Hello world' on Win32/MinGW and got an executable of 1.3 
> MByte. Option --no-rtc had no influence. I am somewhat lost with 10 
> lines of gcc options scrolling up upon 'oo2c -Mv hello.Mod'. What is 
> happening? Everything being linked statically and the programs would 
> run on PCs without MinGW and oo2c? How could I reduce the size?
>
> -----------------------------------------------------------
> Frank Hrebabetzky		Tel.:  +55/48/239-2258
> Photonita Ltda			Fax:   +55/48/239-2200
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