http://d.puremagic.com/issues/show_bug.cgi?id=2254





------- Comment #8 from malagana15@yahoo.es  2009-02-16 11:48 -------
I just want to comment: The more symbols, the more exports you have...the more file size you get. What i hate the most is that when you execute your program it takes even more memory.

I did a simple Direct3D program that initialize device and shows absolutely no stuff, just a blank screen. This program uses 9.5 MB in memory, and it does nothing!


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Heinz Traub <malagana15@yahoo.es> changed:

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--- Comment #9 from Heinz Traub <malagana15@yahoo.es> 2009-09-12 16:57:03 PDT ---
This issue still persist even in the latest versions (it gets more serious with every new version, file size grows even more).

I think this is THE bug that prevents newer versions to become the most stable ones in the download page (1.030 has been for a long time) and this bug has been reported a long time ago.

I've been thinking in dropping development for now. We are developing a commercial game engine, we use newer versions of DMD1 because it solves many issues that were bothering us, we are fine coding and very happy using D templates but running the engine...it's counter productive, it's using excesive system memory and we're gonna need a huge distribution media if it keeps like this.

Walter, i hope you read this, you're the most adecuate person to solve this. This issue must be addresed now before it compromises the DMD development achieved so far.

I found out one more thing, one more symptom:
Create the most basic hello world program and compile it. Check how large the
file is.
Now, import as many phobos modules as you can. Don't use any module! just
import them. Do this with about 8 modules. Compile and recheck file size...it
grews in an extreme manner and not even using new symbols.

That's it. All i can do is report and i hope this post change something. Thanxs in advance.

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--- Comment #10 from torhu@yahoo.com 2009-11-22 13:28:52 PST ---
Since I assume this is a long-term bug now that wrapping up D 2 has the main focus, I'll post some tips and tricks.

If you are using D 1, you'll probably have better luck with Tango.  A hello world program built with Tango is about half the size.  If you really want to use phobos you can custom build it, see comment #1 and onwards.

I wonder what platform you're on if saving a few hundred kB of disk space is important, though.

When that's said, if you use other libraries written in D, make sure you build in one of two ways:

A) Build everything in one go, don't use .lib files.  Except for tango/phobos and C libs.  This means using a build tool or script that hands all files to dmd at once.  Very fast and simple build process.  Supported by xfbuild/bud/dsss build tools.

B) Build .lib files of your library dependencies first, by handing one file at a time to dmd, then running lib.exe to create a .lib file.  Supported by DSSS, and possibly xfbuild.  Or you could use a makefile or whatever you prefer.

The *WRONG* way to build is as follows:

C) Build .lib files by handing all files to dmd at once.  Then build your app (any way you like) and link to those .lib files.  Unless your exe uses absolutely everyting defined in those libs, this causes a bloated executable. You end up getting more then a wanted, because this way of building causes fake dependencies between modules.


If you want try A, I suggest having a look at xfbuild, it's very fast and
flexible.  Ask in the newsgroup D.learn if you need help with setting it all
up.
http://bitbucket.org/h3r3tic/xfbuild/wiki/Home

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Don <clugdbug@yahoo.com.au> changed:

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           Severity|major                       |regression


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--- Comment #11 from Stefan Liebig <StefanLiebig@web.de> 2010-01-28 04:23:33 PST ---
The D app is used in production, so rebuilding with tango and/or D2 is simply
too risky. And yes, in our scenario size matters because the application gets
deployed and updated via the internet.
For DSL that wouldn´t be a problem but there are a lot of users that have
slower connecions e.g. GPRS mobile connections.

However, thanks for the advice of building the app without the lib - plan A I will give it a try.

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--- Comment #12 from Don <clugdbug@yahoo.com.au> 2010-09-19 13:36:32 PDT ---
This problem has just worsened in the last two releases of D2.
Executable size of writefln("Hello world"); by version is:
1.00->1.031: 100K-113K.
1.032: 276K
1.034 and later: 324K-340K.

2.00-2.025: 114K-130K
2.027: 189K
2.030-2.047: 217K - 230K
2.048: 264K
2.049: 305K

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--- Comment #13 from Heinz Traub <malagana15@yahoo.es> 2010-10-04 12:56:05 PDT ---
Please vote for this issue. It may give a higher priority and Walter might take a look at this long term bug.

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nfxjfg@gmail.com changed:

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--- Comment #14 from nfxjfg@gmail.com 2010-10-04 17:41:57 PDT ---
Those who are affected by this, be sure to check bug 4767.
Can pull in unrelated and unused modules from the standard library.
There's also bug 3214 which can double the size of debug executables.

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Steven Schveighoffer <schveiguy@yahoo.com> changed:

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--- Comment #15 from Steven Schveighoffer <schveiguy@yahoo.com> 2011-02-11 06:22:02 PST ---
I just discovered some interesting results when compiling with -lib and unittests.

See bug 5660.

-lib definitely needs some work.  I hope this is something easy to fix, because the perception is not good for outsiders.

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--- Comment #16 from Justin C Calvarese <technocrat7@gmail.com> 2011-02-11 13:30:20 PST ---
(In reply to comment #15)
...
> See bug 5660.

Since bug 5660 doesn't exist (yet), I assume you mean bug 5560.

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