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From:	Rugxulo <rugxulo AT gmail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: building libc (was "Re: ANNOUNCE: DJGPP port of Lua 5.2.0 uploaded.")
Date:	Fri, 30 Dec 2011 14:16:33 -0800 (PST)
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Reply-To:	djgpp AT delorie DOT com

Hi,

On Dec 30, 7:49 am, Juan Manuel Guerrero <juan DOT guerr DOT  DOT  DOT  AT gmx DOT de> wrote:
> On 28 Dez., 05:08, Rugxulo <rugx DOT  DOT  DOT  AT gmail DOT com> wrote:
> [snip]
>
> > > Before you start compiling you
> > > must copy djgpp.djl and dxe.ld from the cvs /lib directory into your
> > > djgpp installation /lib directory.  If this is not done the
> > > compilation will abort when compiling symify.
>
> > Wouldn't this be a good use for UPDATE.EXE (to automate it) when
> > building?
>
> That is a design question that must be answered by DJ and not by me.
> But replacing the original files with the new ones may not be what
> the user intends.

Well, if you can't build symify without it, it seems like it should be
done automatically. Or is this at least documented somewhere that I
missed? I just don't think mysterious failures are helpful.   ;-)

> You do not need VMware.  I have installed VirtualBox 4.1.4 on my
> linux box and it is possible to compile djgpp's sources out-of-the-
> box.

Yes, I've used VirtualBox, though not much for compiling.

> Virtual Box allows to use VWmare virtual disks so I was able to
> compare both solutions.
> (snip)

Weird how LFNs slow everything down.

> DosEMU does not work at all my linux box.  It always crashes and tells
> me to download the sources and recompile it with certain debug flags
> set.  The output produced from that debug version shall be send to the
> maintainers.  That is to mutch work and makes dosemu useless for
> current linux versions.

What did you say you use, OpenSuSE? Maybe it's an SELinux issue. Try
these:

su -c 'sysctl -w vm.mmap_min_addr=0'
su -c 'sesetbool -P mmap_low_allowed 1'

You could also try manually installing the binary version from the
DOSEMU site (instead of whatever buggy version is bothering you):

http://www.dosemu.org/stable/

> I have also installed debian 6.0.3.  debian seems no
> longer to provide dosemu at all.  It still prevides dosbox and
> virtualbox.

Seems they keep it in "contrib":

http://packages.debian.org/search?keywords=dosemu

> According to my experience, with virtualbox we have an open source
> virtual
> system that allows to compile the libc sources and also other djgpp
> sources
> with and without LFN support.

Yes, it's good and GPL, so no complaints here.

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