gcc iussue or ... ?

[Gianmarco Giovannelli]

At 11/04/2003, you wrote:
>In message: <5.2.0.9.2.20030411223601.053eaeb8 at 194.184.65.7>
>             Gianmarco Giovannelli <gmarco at scotty.masternet.it> writes:
>: At 11/04/2003, Leo Bicknell wrote:
>: >In a message written on Fri, Apr 11, 2003 at 08:41:37AM +0200, Gianmarco
>: >Giovannelli wrote:
>: > > The problem is that if I compile it under FreeBSD it is a binary of 19M,
>: > > while on linux (debian 3.0), same Makefile, is only 2MB. FreeBSD 5.0 and
>: > > OpenBSD 3.1 produce the (about) 19M file.
>: >
>: >Well, the problem location is fairly obvious:
>: >
>: >% ls -lags | sort -nr | more
>: >19416 -rwxr-xr-x  1 bicknell  wheel  19854956 Apr 11 09:49 lonewolf*
>: >16912 -rw-r--r--  1 bicknell  wheel  17286792 Apr 11 09:42 globals.o
>: >   368 -rw-r--r--  1 bicknell  wheel    365140 Apr 11 09:46 npcinfo.o
>: >   304 -rw-r--r--  1 bicknell  wheel    301100 Apr 11 09:47 targeting.o
>: >   272 -rw-r--r--  1 bicknell  wheel    267648 Apr 11 09:48 virtues.o
>: >[etc]
>: >
>: >A quick nm --size-sort globals.o | tail shows:
>: >
>: >00009b80 D ownsp
>: >00009b80 D spawnsp
>: >000138a0 D location
>: >00111020 D region
>: >002180a0 D buffer
>: >002190a0 D PacketFetcher
>: >01061710 D PacketSender
>: >01061778 D cwrap
>: >010617f0 D w_anim
>: >01061850 D wp_version
>: >
>: >buffer, for instance appears to be 129 * 17000 = 2193000, a 2M
>: >buffer, and nm shows 2195616 bytes.
>: >
>: >I can't track down quickly why the others are so big, but I suspect you
>: >may be making them bigger than you expected.  It could also be that
>: >FreeBSD puts some types of globals in the executable to load, where as
>: >Linux puts them in some zero filled pages or something, I don't know
>: >enough to know for sure.  Either way, you probably want to make the
>: >data smaller, or dynamically allocate it to make sure you don't run
>: >into this on any platform.
>:
>: The problem is that both the system start from _equals_ conditions (gcc
>: version, Makefiles and so on).
>: I'd like to understand way they generate different (and very different) exe
>: file...
>
>Since you haven't given us the output of the make build, we can't tell
>that for sure.  Equal makefiles might give slightly different results.
>
>Also, the items in 'D', why are they in data section rather than bss
>section.  That's likely a large part of the problem.  Can you share
>the definition of buffer?

Hi Warner,
first of all thanks for your reply.

My skills in g++ programming (as in other fields as well :-) are very 
limited .
The only help I can give you is where the sources are (they are very small 
and you can easily build with make -f Makefile.unix) :
http://games.gimbo.org/uo/binaries.pl
or if you prefer a short way:
http://games.gimbo.org/uo/files/bin/lonewolf/cvs_src.tgz

If you can help in trace down this hacks it will be wonderfull :-)

Thanks again.



Best Regards,
Gianmarco Giovannelli ,  "Unix expert since yesterday"
http://www.gufi.org/~gmarco