Re: Is it feasible to cross-build compat5x binary?

From: Ruslan Ermilov (ru_at_freebsd.org)
Date: 10/27/05

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    Date: Thu, 27 Oct 2005 22:35:17 +0300
To: obrien@freebsd.org, delphij@delphij.net, freebsd-security@freebsd.org, developers@freebsd.org

    On Sun, Oct 23, 2005 at 04:29:35PM -0700, David O'Brien wrote:
    > On Sun, Oct 23, 2005 at 06:52:30PM +0800, Xin LI wrote:
    > > I think we need to update compat5x binary to fix FreeBSD-SA-05:21.openssl,
    > > but will the binaries built by ``make universe'' be identical with actual
    > > build on Alpha, Sparc64, etc? (Yes, I'm volunteering to do the work iff
    > > they are identical ;-)
    >
    > We should no trust cross built libraries for this purpose at this time.
    > We really don't know how identical the results will be to being natively
    > built.
    >
    On -CURRENT they will be identical. I regularly do test cross-builds
    and do binary compares from installworld/installkernel. The
    infrastructure is there, and is activated by the CROSS_BUILD_TESTING
    knob: it tries to eliminate as much difference as it can, with the
    help of tools/build/cross-build, and ensuring the object directory
    is the same on native and foreign architectures. Attached is the
    script I use to test cross-builds. I pass it buildworld, buildkernel,
    installworld, installkernel, and distribution targets, and then do
    binary compares. The only known decrepancy at this time is with
    file(1) data files on sparc64/non-sparc64.

    Cheers, 

    -- 
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer

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