Re: rebuild DragonFly using gcc 4.1

[Bill Hacker <wbh@xxxxxxxxxxxxx>]

Erik Wikström wrote:
> On 2007-05-05 20:59, arnuld wrote:
> > > On 5/5/07, arnuld <geek.arnuld@gmail.com> wrote:
> > > i wanted to have GCC 4.x based DragonFly system (for a C++ project)

Arnild,

Pardon the top post, but I'd take all this a step or so further for a 'newbie' 
with only one machine:

- Install a 'production' release of DragonFly in a separate slice before 
installing 'preview' or 'head' in its own slice.

Equip the 'production' one with email, browser, man pages - all the 'tools' you 
need.

And *keep* that one installed. i.e. - be able to boot to no fewer than TWO DFLY.
Throw in FreeBSD, Minix or a Linux if you have the space, time, and inclination.
Use a second drive or a USB stick if need be.

Now you have a DragonFly baseline that is 'known stable', gets you man pages, 
packages, tarballs, browsing, etc - all with minimal hassle vs HEAD.

From it, you can also manually mount the slice and partitions of the 'R&D' 
version 'next door'.  That lets you transfer files, inspect, alter, fix things 
of the sibling. Or clean it out and start with another.

. . which may be just another copy of the release version equipped with the Gcc 
4.x  compiler suite.

PREVIEW or HEAD are probably not needed for your project at all *unless* their 
newest features - not just Gcc 4.x - are specifically part of the project itself.

HTH,

Bill Hacker


> > > and "Trevor Kendall" advised this:
> > >
> > > ------------
> > > If you are using 1.8.x:
> > > In /etc/make.conf uncomment WANT_GCC41=yes and rebuild.
> > >
> > > If you are using HEAD, it is built automatically already.
> > >
> > > To use it set CCVER to gcc41.
> > > --------------
> > >
> > >
> > > but "Matt" said "please do NOT use HEAD". so i used "LATEST preview
> > > release" which was GCC 3.4 based. In "/etc/mk.conf" i added a line
> > > "WANT_GCC41=yes" but i do not know how to rebuild ? i  tried Google
> > > and got this:
> > >
> > > # make buildworld
> > > # make buildkernel
>
> More on this at the end.
>
> > > when i try this i get this message: "do not know how to build world".
> > > funny message, i thought.  so i have these questions:
> > >
> > > 1.) Is it a good idea to use  DragonFly preview release as my
> > > general-purpose OS. actually, i want learn UNIX and i want GCC 4.x to
> > > work on a C++ project. i just use a Window Manager, xine-ui, firefox,
> > > emacs, bash, gimp, audacious or xmms and nothing else. i don't use
> > > Desktops.
>
> Well, most of those applications will probably be available from pkgsrc 
> and if not then some other workalike will be. And it's quite a good 
> system to learn about UNIX on since it does not try to hide it's 
> heritage like some Linux distros (Ubunto).
>
> > > 2.) how to rebuild the preview release for gcc4.x and how long this
> > > process will be ?
>
> It depends a bit on your computer and internet connection, but it can 
> take a up to a couple of hours on a not to old PC.
>
> > > 3.) is it necessary to do this before rebuilding world:
> > >
> > > cvs -d anoncvs@anoncvs.us.netbsd.org:/cvsroot co pkgsrc
> > >
> > > even after 4 hours, it is still downloading packages :-(. is it
> > > downloading the source code of every package ?
>
> No, it's not necessary, in fact I would not do that at all if I were 
> you. Using binary packages are much easier, see below for more info.
>
> > > 4.) DragonFlyBSd guide also advises to use "cvs up" after step 3. what
> > > is it and how much time will that take ?
>
> It downloads the DragonFly sourcecode to your computer so that you can 
> compile it. If you have a slow connection you might want to download a 
> compressed tarball of the sources instead of using cvsup. You can 
> download tarballs from here: 
> ftp://chlamydia.fs.ei.tum.de/pub/DragonFly/snapshots/src
>
> > hmm.. this page gives lots of information tha i snot present in
> > "DragonFlyBSD handbook":
> >
> > http://wiki.dragonflybsd.org/index.cgi/QuickStartBSDUser
>
> Yes, the steps under Keeping up to date are good, but use the file
>
> /usr/share/examples/cvsup/DragonFly-release1_8-supfile
>
> or
>
> /usr/share/examples/cvsup/DragonFly-preview-supfile
>
> it you want preview. If you have a slow connection you might want to 
> download a tarball as mentioned above.
>
> For third party application don't follow what's written under Installing 
> software, look at http://wiki.dragonflybsd.org/index.cgi/HowToPkgsrc and 
> follow the steps under the section Pre-built pkgsrc packages, but use 
> the addresses found on
>
> ftp://packages.stura.uni-rostock.de/pkgsrc-current/DragonFly/RELEASE/i386/All 
>
>
> if a package you want can't be found there take a look in
>
> ftp://packages.stura.uni-rostock.de/pkgsrc-current/DragonFly/RELEASE/i386/vulnerable