On Tue, Aug 6, 2013 at 7:51 PM, Michael Richardson <m...@sandelman.ca> wrote:
>
> Han <keepsim...@gmail.com> wrote:
> > I am trying to build and run some of my C programs in UML. One way
> I tried is
> > to build (i.e. compile) the program on the host, then run it in
> UML. The
> > problem is that the UML rootfs I used lacks many of the /usr/lib/
> shared
> > libraries, hence the program failed to run.
>
> Well, you have to install the things you need then.
>
> > My question is: what is the best practice to build and run C
> programs for UML?
> > Do people normally compile the program on the host and then run it
> in UML?
> > Or compile the program directly in UML and then run it?
>
> I make sure I have the same operating system and 32/64-bit-ness, and I use
> hostfs, and I use "make DESTDIR=/path/to/my/uml/instance install".
>
[Han] in my case, the host is using a different linux kernel and different
32/64-bit-ness. And I can't change that. And I also cannot mount the UML
rootfs (don't have permission) to add things from the host.
the linux machine I used to build the UML rootfs is different from the
linux host that I run the UML.
>
> > If folks compile the C programs in UML directly, where the "gcc"
> comes from?
> > Is it built part of the rootfs, or some add-ons? Any pointers for
> that?
>
> It's part of the rootfs, and you have a complete operating system there.
> You use yum or apt or yast2 to install whatever you need.
>
[Han] I don't have the network connection from inside the UML yet. Need to
set up that first and try to install things.
thanks.
>
> --
> ] Never tell me the odds! | ipv6 mesh
> networks [
> ] Michael Richardson, Sandelman Software Works | network
> architect [
> ] m...@sandelman.ca http://www.sandelman.ca/ | ruby on rails
> [
>
>
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