dev-cpp-users

[Dev-C++] Executable Size

[Marc H. <ma...@e-...>]

Hi All,

I have just completed writing a windows based app using Dec-C++ (4.9.6.8)
and gcc (2.95.3-6) compiled using -O3 and got an executable size of 100,864
bytes. I then took the same code (no changes) and compiled using VC++ 6 SP2
release build and got and executable size of 69,632 bytes. Are there some
switches and things I should know about that can further optimize the
results?

_____________________________
Marc Heiligers

Re: [Dev-C++] Executable Size

[Carlos d. M. <cg...@wo...>]

You can use -s, and with it some say add -Wl and others it's not needed b=
ecause
its effect is the same than use only -s. Turn off -g and -pg if you used =
them
but forgot (yeah, I know you didn't forget it). I don't know what would b=
e the
effect of change the optimization level.

Marc Heiligers escribi=F3:

> Hi All,
>
> I have just completed writing a windows based app using Dec-C++ (4.9.6.=
8)
> and gcc (2.95.3-6) compiled using -O3 and got an executable size of 100=
,864
> bytes. I then took the same code (no changes) and compiled using VC++ 6=
 SP2
> release build and got and executable size of 69,632 bytes. Are there so=
me
> switches and things I should know about that can further optimize the
> results?
>
> _____________________________
> Marc Heiligers
>
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Re: [Dev-C++] Executable Size

[<or...@vp...>]

Hello Marc!

Friday, November 15, 2002, 9:10:46 AM, you wrote:
MH> I have just completed writing a windows based app using Dec-C++ (4.9.6.8)
MH> and gcc (2.95.3-6) compiled using -O3 and got an executable size of 100,864
MH> bytes. I then took the same code (no changes) and compiled using VC++ 6 SP2
MH> release build and got and executable size of 69,632 bytes. Are there some
MH> switches and things I should know about that can further optimize the
MH> results?

Try  using the -O2 flag instead of -O3. I got better (smaller) results
with  it,  and  I  have  read  somewhere,  that O2 is better, and more
reliable than O3, and O1.

I have tried it with a small file:
source:         8091 bytes
normal compile: 4783 bytes
-O (-O1):       4042 bytes
-O2:            4202 bytes
-O3:            5606 bytes

Hope I could help.

-- 
Best regards,
 Oroszi Balázs                     mailto:or...@vp...

RE: [Dev-C++] Executable Size

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Marc Heiligers
> Sent: Friday, November 15, 2002 10:11 AM
> To: dev-cpp-users-list
> Subject: [Dev-C++] Executable Size
> 
> 
> Hi All,
> 
> I have just completed writing a windows based app using 
> Dec-C++ (4.9.6.8)
> and gcc (2.95.3-6) compiled using -O3 and got an executable 
> size of 100,864
> bytes. I then took the same code (no changes) and compiled 
> using VC++ 6 SP2
> release build and got and executable size of 69,632 bytes. 
> Are there some
> switches and things I should know about that can further optimize the
> results?


GCC provides so many switches so as to squeeze much run-time or space.
Take a look at the GCC manual at:

http://gcc.gnu.org/onlinedocs/


Ioannis Vranos
 
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