• Bedros Hanounik <2bedros NOSPAMgmail.com> Oct 04 2007
• BCS <ao pathlink.com> Oct 04 2007
• Michael Gnail <gnail.f gmail.com> Oct 05 2007
• BCS <ao pathlink.com> Oct 05 2007
• Gregor Richards <Richards codu.org> Oct 04 2007
• "Simen Haugen" <simen norstat.no> Oct 05 2007
• "Jarrett Billingsley" <kb3ctd2 yahoo.com> Oct 04 2007
• Jascha Wetzel <firstname mainia.de> Oct 05 2007

Bedros Hanounik <2bedros NOSPAMgmail.com> writes:

why when I compile this program under gdc I get 697KB of binary and when I
compile similar C code in gcc I get 6.5KB (both under Linux (GCC) 4.1.2
20070214 (  (gdc 0.24, using dmd 1.020))



import std.stdio;

int main ()
{
	writefln("Hello World!");
	    return 0;
}

how can I get small footprint binaries out of any D compiler? any difference
between gdc and dmd?

BCS <ao pathlink.com> writes:

Reply to Bedros,

 why when I compile this program under gdc I get 697KB of binary and
 when I compile similar C code in gcc I get 6.5KB (both under Linux
 (GCC) 4.1.2 20070214 (  (gdc 0.24, using dmd 1.020))
 
 import std.stdio;
 
 int main ()
 {
 writefln("Hello World!");
 return 0;
 }
 how can I get small footprint binaries out of any D compiler? any
 difference between gdc and dmd?
 


short version: D doesn't (yet) use shared objects for the stdlib, C does. 
At this point, that hello world has most of the stdlib in it. This issue 
has been brought up before and something will get done about it sooner or 
later.

Michael Gnail <gnail.f gmail.com> writes:

BCS wrote:
 Reply to Bedros,
 
 why when I compile this program under gdc I get 697KB of binary and
 when I compile similar C code in gcc I get 6.5KB (both under Linux
 (GCC) 4.1.2 20070214 (  (gdc 0.24, using dmd 1.020))

 import std.stdio;

 int main ()
 {
 writefln("Hello World!");
 return 0;
 }
 how can I get small footprint binaries out of any D compiler? any
 difference between gdc and dmd?


 short version: D doesn't (yet) use shared objects for the stdlib, C 
 does. At this point, that hello world has most of the stdlib in it. This 
 issue has been brought up before and something will get done about it 
 sooner or later.
 
 


I got a near 110K 'hello,world' on my XP with D 1.015, will there any 
way to link only the used part of stdlib in future version?

BCS <ao pathlink.com> writes:

Reply to Michael,

 BCS wrote:
 
 Reply to Bedros,
 
 why when I compile this program under gdc I get 697KB of binary and
 when I compile similar C code in gcc I get 6.5KB (both under Linux
 (GCC) 4.1.2 20070214 (  (gdc 0.24, using dmd 1.020))
 
 import std.stdio;
 
 int main ()
 {
 writefln("Hello World!");
 return 0;
 }
 how can I get small footprint binaries out of any D compiler? any
 difference between gdc and dmd?


 does. At this point, that hello world has most of the stdlib in it.
 This issue has been brought up before and something will get done
 about it sooner or later.
 


 way to link only the used part of stdlib in future version?
 



IIRC that is a linker issue. Tango side steps it by putting next to nothing 
in the lib and lets you compile just about everthing and then just link in 
the modules you use.

Gregor Richards <Richards codu.org> writes:

Bedros Hanounik wrote:
 why when I compile this program under gdc I get 697KB of binary and when I
compile similar C code in gcc I get 6.5KB (both under Linux (GCC) 4.1.2
20070214 (  (gdc 0.24, using dmd 1.020))
 
 
 
 import std.stdio;
 
 int main ()
 {
 	writefln("Hello World!");
 	    return 0;
 }
 
 how can I get small footprint binaries out of any D compiler? any difference
between gdc and dmd?
 
 


As per usual, the person asking this has not stripped his binary. How do 
so many people continue to labor under the misconception that no extra 
info is added to the binary by default?

Strip your binaries.

  - Gregor Richards

"Simen Haugen" <simen norstat.no> writes:

"Gregor Richards" <Richards codu.org> wrote in message 
news:fe3opi$n0o$1 digitalmars.com...
 As per usual, the person asking this has not stripped his binary. How do 
 so many people continue to labor under the misconception that no extra 
 info is added to the binary by default?

 Strip your binaries.


Is there a strip utility for dmd produced .exe files?
If I try to use gnu strip i get "\temp\t.exe: File format not recognized"

A test with dmd 1.021 makes hello world 113kb, and after upx 49kb.
Of course, a simple C version is 16kb and 13kb after upx.

I'd still prefer D over C :)

"Jarrett Billingsley" <kb3ctd2 yahoo.com> writes:

"Bedros Hanounik" <2bedros NOSPAMgmail.com> wrote in message 
news:fe3itj$eks$1 digitalmars.com...
 why when I compile this program under gdc I get 697KB of binary and when I 
 compile similar C code in gcc I get 6.5KB (both under Linux (GCC) 4.1.2 
 20070214 (  (gdc 0.24, using dmd 1.020))



 import std.stdio;

 int main ()
 {
 writefln("Hello World!");
     return 0;
 }

 how can I get small footprint binaries out of any D compiler? any 
 difference between gdc and dmd?


What command line did you use?.  Non-release builds can be significantly 
larger than their release counterparts. 

Jascha Wetzel <firstname mainia.de> writes:

Bedros Hanounik wrote:
 why when I compile this program under gdc I get 697KB of binary and when I
compile similar C code in gcc I get 6.5KB (both under Linux (GCC) 4.1.2
20070214 (  (gdc 0.24, using dmd 1.020))


The comparison isn't quite fair, since the D executable contains a lot 
more than the C exe does.
To get a more realistic comparison, compile a C++ version (using 
iostream) with statically linked runtime and RTTI enabled. Using VC8 
(default release settings, plus /MT for statically linked runtime) that 
results in an exe size of 108kb, which is comparable to the 113kb that 
DMD 1.021 produces.