Programming Forums > Application Development > C++

Dia_Byte · Nov 12th, 2004, 5:09 AM

HELP!!!!!!!!

i'm using DEV_CPP and i am getting 100KB+ programs for a simple code that prints "hello world" to the screen !!!!

how can i reduce the size of my programs ??

Benoit · Nov 12th, 2004, 7:52 AM

Thats crazy.....Because I made a simple text file encryption program and it was only 5KB

Pizentios · Nov 12th, 2004, 8:40 AM

You must be doing somthing wrong dude. Can you post exactly what code you are using?

Dia_Byte · Nov 12th, 2004, 10:55 AM

no i did'nt do anything wrong !!

this is the source code of the program :

#include <iostream.h>

int main()
{

cout << "hello world\n";
return 0;
}

Pizentios · Nov 12th, 2004, 11:01 AM

hmmm, i have no idea what's going on then. Probally somthing to do with your compiller.

Ooble · Nov 12th, 2004, 12:19 PM

It's most probably the compiler - I'm afraid the only thing you can do is deal with it.

lostcauz · Nov 12th, 2004, 12:33 PM

With this code using win98:

(Toggle Plain Text)

#include <iostream>
using namespace std;

int main()
{
  cout << "hello world\n";
  return 0;
}

Compiled with MingW using

(Toggle Plain Text)

g++ -o big big.cpp

gave me an executable of 438kb
Using different switches to first convert to asm then compile

(Toggle Plain Text)

g++ -s big.cpp -o big2

gave me 206kb
I'm not sure if this can be reduced further other than switching to C.

kurifu · Nov 12th, 2004, 4:45 PM

Try giving it the switch -Os, that will likely help it a lot. I do not think that one header is causing that much bloat... it is also possible that you are generating debug information and having that inserted in there?

lostcauz · Nov 12th, 2004, 5:16 PM

On win98 with mingw gcc version 3.2 the -Os switch still gave me 438kb.
Using this code and saving as a C file.

(Toggle Plain Text)

#include <stdio.h>

int main()
{
  printf("hello world\n");
  return 0;
}

Compiled with:

(Toggle Plain Text)

gcc -o bigc bigc.c

gives 22kb

Compiled with:

(Toggle Plain Text)

gcc -s bigc.c -o bigc2

nets 11kb.

FWIW VC++6 gave me an executable of 221kb for the cpp code.

kurifu · Nov 12th, 2004, 10:20 PM

As an interesting note I decided to compile the exact same program and these are my results:

(Toggle Plain Text)

gcc -Os hello.c; ls -las a.out;
8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:13 a.out

Only 6.8k in size... strange difference there...

(Toggle Plain Text)

gcc hello.c; ls -las a.out;
8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:15 a.out

No change in results here....

(Toggle Plain Text)

bash-2.05b$ gcc -s hello.c
bash-2.05b$ ls -las a.out
4 -rwxr-xr-x 1 kurifu users 3180 Nov 13 00:16 a.out

Half the space saved here... but that is because the "-s" option strips uneeded and debugging information from the executable... I got the same results when I ran this:

(Toggle Plain Text)

bash-2.05b$ gcc -Os hello.c
bash-2.05b$ ls -las a.out
8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:20 a.out
bash-2.05b$ strip a.out
bash-2.05b$ ls -las a.out
4 -rwxr-xr-x 1 kurifu users 3160 Nov 13 00:20 a.out

Now one thing we need to bear in mind is that I compiled this code to run on linux, which means that if you are using windows than we will have different executable formats, ELF in nature is smaller than windows' PE32 format.

Unstripped code will always vary in size depending on the amount of debugging information your compiler puts in there by default, and the format that it uses to record this information.. that may not be unusual sizes at all for what you are attempting to accomplish. Actually they seem very reasonable in my opinion.

Here is more information about my OS and compiler:

(Toggle Plain Text)

bash-2.05b$ uname -a; uptime; gcc -v;
Linux tsukasa 2.6.9-gentoo-r1 #1 Fri Nov 5 21:16:53 AST 2004 i686 Mobile Intel(R) Pentium(R) 4 - M CPU 2.40GHz GenuineIntel GNU/Linux
 00:23:42 up 1 day, 10:49, 3 users, load average: 0.06, 0.27, 0.25
Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/specs
Configured with: /var/tmp/portage/gcc-3.3.4-r1/work/gcc-3.3.4/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3 --includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/info --enable-shared --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --with-system-zlib --enable-languages=c,c++,f77,objc --enable-threads=posix --enable-long-long --disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio --enable-version-specific-runtime-libs --with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include/g++-v3 --with-local-prefix=/usr/local --enable-shared --enable-nls --without-included-gettext --disable-multilib --enable-__cxa_atexit --enable-clocale=generic
Thread model: posix
gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)

Nov 12th, 2004, 7:52 AM	#2
Benoit Expert Programmer Join Date: Sep 2004 Location: Ontario, Canada Posts: 550 Rep Power: 4	Thats crazy.....Because I made a simple text file encryption program and it was only 5KB __________________ Johnny was a chemist's son but Johnny is no more, for what Johnny thought was H2O was H2SO4

Nov 12th, 2004, 8:40 AM	#3
Pizentios Programming Guru Join Date: May 2004 Location: Brandon, Manitoba, Canada Posts: 2,023 Rep Power: 7	You must be doing somthing wrong dude. Can you post exactly what code you are using? __________________ Profanity is the one language that all programmers understand. Check out my Blog <---updated Nov 30 2007!

Nov 12th, 2004, 10:55 AM	#4
Dia_Byte Programmer Join Date: Nov 2004 Location: Bierut - Lebanon Posts: 34 Rep Power: 0	no i did'nt do anything wrong !! this is the source code of the program : #include <iostream.h> int main() { cout << "hello world\n"; return 0; } __________________ <removed by Administrator>

Nov 12th, 2004, 11:01 AM	#5
Pizentios Programming Guru Join Date: May 2004 Location: Brandon, Manitoba, Canada Posts: 2,023 Rep Power: 7	hmmm, i have no idea what's going on then. Probally somthing to do with your compiller. __________________ Profanity is the one language that all programmers understand. Check out my Blog <---updated Nov 30 2007!

Nov 12th, 2004, 12:19 PM	#6
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	It's most probably the compiler - I'm afraid the only thing you can do is deal with it. __________________ Me :: You :: Them

Nov 12th, 2004, 5:09 AM	#1
Dia_Byte Programmer Join Date: Nov 2004 Location: Bierut - Lebanon Posts: 34 Rep Power: 0	HELP!!!!!!!! i'm using DEV_CPP and i am getting 100KB+ programs for a simple code that prints "hello world" to the screen !!!! how can i reduce the size of my programs ?? __________________ <removed by Administrator>

Nov 12th, 2004, 12:33 PM	#7
lostcauz Hobbyist Programmer Join Date: Nov 2004 Location: 1691 miles East of L.A. Posts: 159 Rep Power: 4	With this code using win98: (Toggle Plain Text) #include <iostream> using namespace std; int main() { cout << "hello world\n"; return 0; } #include <iostream> using namespace std; int main() { cout << "hello world\n"; return 0; } Compiled with MingW using (Toggle Plain Text) g++ -o big big.cpp g++ -o big big.cpp gave me an executable of 438kb Using different switches to first convert to asm then compile (Toggle Plain Text) g++ -s big.cpp -o big2 g++ -s big.cpp -o big2 gave me 206kb I'm not sure if this can be reduced further other than switching to C. __________________ -- lostcauz Stepped in what?... Behind whose barn?... I didn't even know they had a cow!

Nov 12th, 2004, 4:45 PM	#8
kurifu Expert Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia (Canada) Posts: 784 Rep Power: 5	Try giving it the switch -Os, that will likely help it a lot. I do not think that one header is causing that much bloat... it is also possible that you are generating debug information and having that inserted in there? __________________ Clifford Matthew Roche <geek@cliffordroche.com> Web Hosting: http://www.crd-hosting.com Consulting: http://www.crdev-consulting.com

Nov 12th, 2004, 5:16 PM	#9
lostcauz Hobbyist Programmer Join Date: Nov 2004 Location: 1691 miles East of L.A. Posts: 159 Rep Power: 4	On win98 with mingw gcc version 3.2 the -Os switch still gave me 438kb. Using this code and saving as a C file. (Toggle Plain Text) #include <stdio.h> int main() { printf("hello world\n"); return 0; } #include <stdio.h> int main() { printf("hello world\n"); return 0; } Compiled with: (Toggle Plain Text) gcc -o bigc bigc.c gcc -o bigc bigc.c gives 22kb Compiled with: (Toggle Plain Text) gcc -s bigc.c -o bigc2 gcc -s bigc.c -o bigc2 nets 11kb. FWIW VC++6 gave me an executable of 221kb for the cpp code. __________________ -- lostcauz Stepped in what?... Behind whose barn?... I didn't even know they had a cow!

Nov 12th, 2004, 10:20 PM	#10
kurifu Expert Programmer Join Date: Jul 2004 Location: Halifax, Nova Scotia (Canada) Posts: 784 Rep Power: 5	As an interesting note I decided to compile the exact same program and these are my results: (Toggle Plain Text) gcc -Os hello.c; ls -las a.out; 8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:13 a.out gcc -Os hello.c; ls -las a.out; 8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:13 a.out Only 6.8k in size... strange difference there... (Toggle Plain Text) gcc hello.c; ls -las a.out; 8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:15 a.out gcc hello.c; ls -las a.out; 8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:15 a.out No change in results here.... (Toggle Plain Text) bash-2.05b$ gcc -s hello.c bash-2.05b$ ls -las a.out 4 -rwxr-xr-x 1 kurifu users 3180 Nov 13 00:16 a.out bash-2.05b$ gcc -s hello.c bash-2.05b$ ls -las a.out 4 -rwxr-xr-x 1 kurifu users 3180 Nov 13 00:16 a.out Half the space saved here... but that is because the "-s" option strips uneeded and debugging information from the executable... I got the same results when I ran this: (Toggle Plain Text) bash-2.05b$ gcc -Os hello.c bash-2.05b$ ls -las a.out 8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:20 a.out bash-2.05b$ strip a.out bash-2.05b$ ls -las a.out 4 -rwxr-xr-x 1 kurifu users 3160 Nov 13 00:20 a.out bash-2.05b$ gcc -Os hello.c bash-2.05b$ ls -las a.out 8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:20 a.out bash-2.05b$ strip a.out bash-2.05b$ ls -las a.out 4 -rwxr-xr-x 1 kurifu users 3160 Nov 13 00:20 a.out Now one thing we need to bear in mind is that I compiled this code to run on linux, which means that if you are using windows than we will have different executable formats, ELF in nature is smaller than windows' PE32 format. Unstripped code will always vary in size depending on the amount of debugging information your compiler puts in there by default, and the format that it uses to record this information.. that may not be unusual sizes at all for what you are attempting to accomplish. Actually they seem very reasonable in my opinion. Here is more information about my OS and compiler: (Toggle Plain Text) bash-2.05b$ uname -a; uptime; gcc -v; Linux tsukasa 2.6.9-gentoo-r1 #1 Fri Nov 5 21:16:53 AST 2004 i686 Mobile Intel(R) Pentium(R) 4 - M CPU 2.40GHz GenuineIntel GNU/Linux 00:23:42 up 1 day, 10:49, 3 users, load average: 0.06, 0.27, 0.25 Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/specs Configured with: /var/tmp/portage/gcc-3.3.4-r1/work/gcc-3.3.4/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3 --includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/info --enable-shared --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --with-system-zlib --enable-languages=c,c++,f77,objc --enable-threads=posix --enable-long-long --disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio --enable-version-specific-runtime-libs --with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include/g++-v3 --with-local-prefix=/usr/local --enable-shared --enable-nls --without-included-gettext --disable-multilib --enable-__cxa_atexit --enable-clocale=generic Thread model: posix gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6) bash-2.05b$ uname -a; uptime; gcc -v; Linux tsukasa 2.6.9-gentoo-r1 #1 Fri Nov 5 21:16:53 AST 2004 i686 Mobile Intel(R) Pentium(R) 4 - M CPU 2.40GHz GenuineIntel GNU/Linux 00:23:42 up 1 day, 10:49, 3 users, load average: 0.06, 0.27, 0.25 Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/specs Configured with: /var/tmp/portage/gcc-3.3.4-r1/work/gcc-3.3.4/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3 --includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/info --enable-shared --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --with-system-zlib --enable-languages=c,c++,f77,objc --enable-threads=posix --enable-long-long --disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio --enable-version-specific-runtime-libs --with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include/g++-v3 --with-local-prefix=/usr/local --enable-shared --enable-nls --without-included-gettext --disable-multilib --enable-__cxa_atexit --enable-clocale=generic Thread model: posix gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6) __________________ Clifford Matthew Roche <geek@cliffordroche.com> Web Hosting: http://www.crd-hosting.com Consulting: http://www.crdev-consulting.com

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Programming Forums > Application Development > C++

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