ISO image: where is the CLANG compiler?

[O. Hartmann]

On Thu, 19 Jan 2017 06:58:16 +0100
Matthias Apitz <guru at unixarea.de> wrote:

> El día Wednesday, January 18, 2017 a las 08:00:04PM -0500, Allan Jude
> escribió:
> 
> > On 2017-01-18 14:37, O. Hartmann wrote:  
> > > Am Wed, 18 Jan 2017 16:38:32 +0100
> > > Matthias Apitz <guru at unixarea.de> schrieb:
> > >   
> > >> Why you do not just boot from USB some mem stick image, mount some disk
> > >> space to /mnt, svn checkout CURRENT to /mnt and build a booteable system
> > >> (world and kernel) and install to DESTDIR=/mnt ?
> > >>
> > >> I do not understand all this hassle?
> > >>
> > >> 	matthias
> > >>  
> > > 
> > > Wow!
> > > 
> > > As I initially stated, that is EXACTLY what I was inclined to do except
> > > the fact that I had already an intact /usr/obj and usr/src with a
> > > complete compiled system.
> > > 
> > > I booted from mem stick and I was lost due to no cc!
> > > 
> > > Even for "make installworld" it seems I have to rely on the compiler. And
> > > the images (ISO, memstick et cetera) provided these days do not contain
> > > any clang.  
> 
> Yes, you will need it and it will complain about missing it, if for
> example you moved 'obj and 'src' to other dirs after 'make build...'
> 
> But, in your case the mem image really is lacking the cc/clang; I
> fetched the image an did:
> 
> 
> # mdconfig -a -t vnode -u 1 -f
> ~guru/Downloads/FreeBSD-11.0-RELEASE-amd64-memstick.img # mount -o
> ro /dev/md1p3 /mnt # find /mnt -name clang
> /mnt/usr/share/doc/llvm/clang
> /mnt/usr/lib/clang
> /mnt/usr/lib/debug/usr/lib/clang
> # find /mnt -name cc
> /mnt/usr/include/netinet/cc
> 
> With this img  alone, you can't compile a system :-(
> 
> Setup a system from DVD and build your own image containing a complete
> system on an USB key; with this boot your damaged system, recompile and
> reinstall world and kernel. If you (O. Hartmann) need a step by step
> guide, I could send it to you.
> 
> 	matthias
> 

Hello,

thanks for your help offering! very kind.

I've already solved the problem - not with the suggested process, but via
copying missing libs and files from and identical intact source. After that, I
ran make buildword/buildkernel and was able to successfully install the new
system.

As I stated before: I already had a complete compiled world and kernel existing
in their proper, intact folders (usr/src and usr/obj). There was no need to
compile a whole world.
Intending to "make installworld" failed, this is the real problem, because the
ISO/memstick images provided lack obviously in the required infrastructure and
so these images are worthless for sophisticated rescue operations - or even
such a simple ask as described initially in my posting.

I created images on CURRENT of my own - they all lack in the ability of having
the necessary tools aboard. So I consider every image useless for rescue
operations except, maybe, the DVD image - but this one is not provided anymore.
For what reason? Time? Accepted. Space/disk usage? Well, welcome back in the
stoneage of computer technology ... 

I remember faintly that there was a small discussion on the @CURRENT list, but
I didn't realize that the result would be the extraction of the compiler.

Just for the record: most servers delivered to us do not have CD/DVD drives
anymore - they are outdated and considered an extra these days. Purchasing 1 GB
USB thumbdrives is getting even harder, smallest size my employer provides now
is 2 GB. And most optical drives are DVD. From my point of view - and this is a
personal view - the "standard" is > 1GB so there is no need to break down by
force the FreeBSD image (if size is the reason) down to < 800 MB or < 1 GB. I'd
consider having < 2GB the line of standards (2 GB USB mem drive).
And for those, with need of very small images, smaller images could be provided
as the extra.

Thank you very much,

kind regards,
Oliver