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at runtime and to support distributing additional kernels: o remove kernel from the base tarball o add new kernel tarballs o build + package both SMP and GENERIC kernels when an <arch>/conf/SMP config file is present o add sysinstall support for multiple kernels o update sysinstall to probe for the number of cpus on a system and auto-select smp/up kernel accordingly o add a post-kernels install hook to fixup /boot/kernel o add -ldevinfo to boot crunch for sysinstall's cpu probing logic Notes: 1. On HEAD this code is not currently used because GENERIC kernels include SMP. This work is mainly intended for RELENG_6 where the GENERIC kernel is UP. If HEAD changes to match then just enable WITH_SMP in sysinstall/Makefile. 2. The cpu probing support is done with acpi and MPTable; this means some systems will require work for auto-detection to work. 3. The handling of /boot/kernel may need to be revisited; for now we rename one kernel at the last moment (SMP if installed, otherwise GENERIC). There are other, possibly better, approaches. Lots of help from ru, emaste, scottl, and jhb.
This is the top level of the FreeBSD source directory. This file was last revised on: $FreeBSD$ For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information). The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree, the most commonly used one being ``world'', which rebuilds and installs everything in the FreeBSD system from the source tree except the kernel, the kernel-modules and the contents of /etc. The ``buildkernel'' and ``installkernel'' targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags. Building a kernel is a somewhat more involved process, documentation for which can be found at: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html And in the config(8) man page. Note: If you want to build and install the kernel with the ``buildkernel'' and ``installkernel'' targets, you might need to build world before. More information is available in the handbook. The sample kernel configuration files reside in the sys/<arch>/conf sub-directory (assuming that you've installed the kernel sources), the file named GENERIC being the one used to build your initial installation kernel. The file NOTES contains entries and documentation for all possible devices, not just those commonly used. It is the successor of the ancient LINT file, but in contrast to LINT, it is not buildable as a kernel but a pure reference and documentation file. Source Roadmap: --------------- bin System/user commands. contrib Packages contributed by 3rd parties. crypto Cryptography stuff (see crypto/README). etc Template files for /etc. games Amusements. gnu Various commands and libraries under the GNU Public License. Please see gnu/COPYING* for more information. include System include files. kerberos5 Kerberos5 (Heimdal) package. lib System libraries. libexec System daemons. release Release building Makefile & associated tools. rescue Build system for statically linked /rescue utilities. sbin System commands. secure Cryptographic libraries and commands. share Shared resources. sys Kernel sources. tools Utilities for regression testing and miscellaneous tasks. usr.bin User commands. usr.sbin System administration commands. For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html