BUILD(7) BSD Miscellaneous Information Manual BUILD(7)
build -- information on how to build the system
The source for the FreeBSD system and applications are contained in three
different directories, normally /usr/src, /usr/doc, and /usr/ports.
/usr/src contains the ``base system'' sources, which is loosely defined
as the things required to rebuild the system to a useful state. /usr/doc
contains the source for the system documentation, excluding the manual
pages. /usr/ports is a tree that provides a consistent interface for
building and installing third party applications.
The make(1) command is used in each of these directories to build and
install the things in that directory. Issuing the make(1) command in any
directory or subdirectory of those directories has the same effect as
issuing the same command in all subdirectories of that directory. With
no target specified, the things in that directory are just built. The
following list provides the names and actions for other targets:
clean Removes any files created during the build process.
install Installs the results of the build for this directory.
update Gets updated sources as configured in /etc/make.conf.
The other /usr/src make targets are:
buildworld Rebuild everything but the kernel, configure files in /etc,
Install everything built by buildworld.
Rebuild the kernel and the kernel modules.
Install the kernel and the kernel modules.
Reinstall the kernel and the kernel modules.
kernel Equivalent to buildkernel followed by installkernel
For more information about the ports build process, see ports(7).
TARGET_ARCH The target machine processor architecture. This is analo-
gous to the ``uname -p'' output. Set this to cross-build
for a different architecture.
TARGET The target hardware platform. This is analogous to the
``uname -m'' output. This is necessary to cross-build some
target architectures. For example, cross-building for PC98
machines requires TARGET_ARCH=i386 and TARGET=pc98.
NO_WERROR If defined, warnings will not cause the build to halt, even
if the makefile says otherwise.
DESTDIR The directory hierarchy where the resulting binaries will be
For an ``approved'' method of updating your system from the latest
sources, please see the COMMON ITEMS section in src/UPDATING.
The following sequence of commands can be used to cross-build the system
for the Alpha architecture on an i386 host:
make TARGET_ARCH=alpha buildworld
make TARGET_ARCH=alpha DESTDIR=/clients/axp installworld
cc(1), install(1), make(1), make.conf(5), ports(7), release(7),
config(8), mergemaster(8), reboot(8), shutdown(8)
Mike W. Meyer <mwmATmired.org>.
BSD February 23, 2005 BSD