Compiling a simple program using std.regex:

import std.regex;
import std.stdio;

void main(string[] args) {
   auto re = regex(args[1], "g");
   foreach(line; stdin.byLine)
       if(line.match(re))
           writeln(line);
}


Renders a 1.6 megabyte binary. Is that normal?

On Sat, 23 Aug 2014 23:40:12 +0000
Bayan Rafeh via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com>
wrote:

> Renders a 1.6 megabyte binary. Is that normal?
yes. this binary includes statically linked runtime and phobos, plus alot of template expansions. alas, template magic is not free.

On Sat, 23 Aug 2014 23:40:12 +0000
Bayan Rafeh via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com>
wrote:

p.s. strip it. stripping debug info can significantly reduce binary size. for your example:

unstripped elf: 1,674,653 bytes
stripped elf  : 1,074,528 bytes

On Sunday, 24 August 2014 at 03:14:33 UTC, ketmar via Digitalmars-d-learn wrote:
> yes. this binary includes statically linked runtime and phobos, plus
> alot of template expansions. alas, template magic is not free.

OTOH, on Linux latest LDC does far better job in eliminating dead code than DMD:
$ ldc2 -O -release test.d && ls -l test | cut -f 5- -d ' '
712522 Aug 24 10:07 test
$ dmd -O -release -noboundscheck test.d && ls -l test | cut -f 5- -d ' '
1892622 Aug 24 10:07 test

Which means there's plenty of unfulfilled potential.

On Sun, 24 Aug 2014 06:10:20 +0000
Artem Tarasov via Digitalmars-d-learn
<digitalmars-d-learn@puremagic.com> wrote:

> OTOH, on Linux latest LDC does far better job in eliminating dead code than DMD:
does ldc uses shared runtime here? with

  dmd -defaultlib=libphobos2.so test.d

i got 657,438 bytes (425,836 stripped).

seems that your ldc uses shared runtime.

On Sunday, 24 August 2014 at 06:20:38 UTC, ketmar via Digitalmars-d-learn wrote:
> does ldc uses shared runtime here?

No, it doesn't:
$ ldd test
	linux-vdso.so.1 (0x00007fffce266000)
	librt.so.1 => /usr/lib/librt.so.1 (0x00007fc174193000)
	libdl.so.2 => /usr/lib/libdl.so.2 (0x00007fc173f8f000)
	libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007fc173d71000)
	libm.so.6 => /usr/lib/libm.so.6 (0x00007fc173a6d000)
	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007fc173857000)
	libc.so.6 => /usr/lib/libc.so.6 (0x00007fc1734a9000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fc17439b000)

On Sun, 24 Aug 2014 06:36:01 +0000
Artem Tarasov via Digitalmars-d-learn
<digitalmars-d-learn@puremagic.com> wrote:

> On Sunday, 24 August 2014 at 06:20:38 UTC, ketmar via Digitalmars-d-learn wrote:
> > does ldc uses shared runtime here?
> No, it doesn't:
hm. ldc rocks. ;-)