Date: Sun, 2 Oct 2016 20:22:14 -0300 From: Mario Lobo <lobo@bsd.com.br> To: freebsd-questions@freebsd.org Subject: Fw: Centralizing /usr/src compilation Message-ID: <20161002202214.6a61d2ab@Papi>
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Hi; I Forgot to CC the list. Begin forwarded message: Date: Sun, 2 Oct 2016 20:20:06 -0300 From: Mario Lobo <lobo@bsd.com.br> To: Erich Dollansky <erichsfreebsdlist@alogt.com> Subject: Re: Centralizing /usr/src compilation On Sun, 2 Oct 2016 21:13:12 +0800 Erich Dollansky <erichsfreebsdlist@alogt.com> wrote: > Hi, > > On Sat, 1 Oct 2016 10:42:24 -0300 > Mario Lobo <lobo@bsd.com.br> wrote: > > > I hava a src master server (10.3.51.50) where I compile src and > > kernel. No CPUTYPE or compiler flags are set. On it, I issued > > make buildworld and make buildkernel that proceed with no errors. > > I shared its /usr/src and /usr/obj via nfs. > > > > Then, on a slave server, same version and arch as the master, it > > has this: > > > do both machines have the same CPU? As you did not specify the CPU, > the CPU in the server was used as the target. If you have different > CPUs but want to use one kernel for all, it might will work if you > specify the type of CPU with the least capabilities you have or you > compile on that machine. > > Erich > > > 2>Illegal instruction (core dumped) Illegal instruction (core > > 2>dumped) > > Illegal instruction sounds like the target CPU does not know an > instruction. Of course, this could also be caused by something else. > > > even bury my idea for good as non workable? > > It should work when you set the CPU type. > > I also run a kernel compiled for an older Intel CPU on a newer Intel > CPU without problems. I never tried it the other way around. > > Erich Hi Erich. Thanks for replying! Actually, the "slave" server is a guest VM hosted on the "master" server. Like I said, the slave has the same FBSD version and arch (AMD64) as the "master". (I know ... the jail argument, but I still didn't master it enough to fell confident for production). I did not specify any CPUTYPE because I assumed that if I didn't, it would compile for a GENERIC CPU, although I thought that through VT-x/AMD-V, the guests sees the same CPU as the host. Which CPUTYPE should I set? I ask because there are other physical machines on the LAN with slightly different CPUs in which I want this to work also. Thanks! -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio.... YET!!] "UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things." -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since 2.2.8 [not Pro-Audio.... YET!!] "UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things."
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