138 lines
5.6 KiB
Makefile
138 lines
5.6 KiB
Makefile
#
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# $Id: Makefile,v 1.226 1999/03/29 10:59:52 obrien Exp $
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#
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# The user-driven targets are:
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#
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# buildworld - Rebuild *everything*, including glue to help do
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# upgrades.
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# installworld - Install everything built by "buildworld".
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# world - buildworld + installworld.
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# update - Convenient way to update your source tree (cvs).
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# upgrade - Upgrade a.out (2.2.x/3.0) system to the new ELF way
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# most - Build user commands, no libraries or include files.
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# installmost - Install user commands, no libraries or include files.
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# aout-to-elf - Upgrade an system from a.out to elf format (see below).
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# aout-to-elf-build - Build everything required to upgrade a system from
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# a.out to elf format (see below).
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# aout-to-elf-install - Install everything built by aout-to-elf-build (see
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# below).
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# move-aout-libs - Move the a.out libraries into an aout sub-directory
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# of each elf library sub-directory.
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#
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# This makefile is simple by design. The FreeBSD make automatically reads
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# the /usr/share/mk/sys.mk unless the -m argument is specified on the
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# command line. By keeping this makefile simple, it doesn't matter too
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# much how different the installed mk files are from those in the source
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# tree. This makefile executes a child make process, forcing it to use
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# the mk files from the source tree which are supposed to DTRT.
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#
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# The user-driven targets (as listed above) are implemented in Makefile.inc0
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# and the private targets are in Makefile.inc1. These are kept separate
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# to help the bootstrap build from aout to elf format.
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#
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# For novices wanting to build from current sources, the simple instructions
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# are:
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#
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# 1. Ensure that your /usr/obj directory has at least 260 Mb of free space.
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# 2. `cd /usr/src' (or to the directory containing your source tree).
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# 3. `make world'
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#
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# Be warned, this will update your installed system, except for configuration
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# files in the /etc directory and for the kernel. You have to do those manually.
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#
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# If at first you're a little nervous about having a `make world' update
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# your system, a `make buildworld' will build everything in the /usr/obj
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# tree without touching your installed system. To be of any further use
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# though, a `make installworld' is required.
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#
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# The `make world' process always follows the installed object format.
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# This is set by creating /etc/objformat containing either OBJFORMAT=aout
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# or OBJFORMAT=elf. If this file does not exist, the object format defaults
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# to aout. This is expected to be changed to elf just prior to the release
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# or 3.0. If OBJFORMAT is set as an environment variable or in /etc/make.conf,
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# this overrides /etc/objformat.
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#
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# If -DWANT_AOUT is specified, a `make world' with OBJFORMAT=elf will
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# update the legacy support for aout. This includes all libraries, ld.so
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# and boot objects. This part of build should be regarded as
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# deprecated and you should _not_ expect to be able to do this past the
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# release of 3.1. You have exactly one major release to move entirely
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# to elf.
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#
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# ----------------------------------------------------------------------------
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#
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# Upgrading an i386 system from a.out to elf format
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#
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#
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# The aout->elf transition build is performed by doing a `make upgrade' (or
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# `make aout-to-elf') or in two steps by a `make aout-to-elf-build' followed
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# by a `make aout-to-elf-install', depending on user preference.
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# You need to have at least 320 Mb of free space for the object tree.
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#
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# The upgrade process checks the installed release. If this is 3.0-CURRENT,
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# it is assumed that your kernel contains all the syscalls required by the
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# current sources.
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#
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# The upgrade procedure will stop and ask for confirmation to proceed
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# several times. On each occasion, you can type Ctrl-C to abort the
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# upgrade. Optionally, you can also start it with NOCONFIRM=yes and skip
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# the confirmation steps.
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#
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# At the end of the upgrade procedure, /etc/objformat is created or
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# updated to contain OBJFORMAT=elf. From then on, you're elf by default.
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#
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# ----------------------------------------------------------------------------
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#
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#
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# Define the user-driven targets. These are listed here in alphabetical
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# order, but that's not important.
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#
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TGTS = afterdistribute all buildworld checkdpadd clean cleandepend cleandir \
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depend distribute everything hierarchy includes install installmost \
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installworld lint maninstall mk most obj objlink regress rerelease \
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tags update world
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#
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# Handle the user-driven targets, using the source relative mk files.
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#
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${TGTS} : upgrade_checks
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@cd ${.CURDIR}; \
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${MAKE} -f Makefile.inc0 -m ${.CURDIR}/share/mk ${.TARGET}
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# Set a reasonable default
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.MAIN: all
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#
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# Perform a few tests to determine if the installed tools are adequate
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# for building the world. These are for older systems (prior to 2.2.5).
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#
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# From 2.2.5 onwards, the installed tools will pass these upgrade tests,
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# so the normal make world is capable of doing what is required to update
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# the system to current.
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#
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upgrade_checks :
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@cd ${.CURDIR}; if `make -m ${.CURDIR}/share/mk test > /dev/null 2>&1`; then ok=1; else ${MAKE} -f Makefile.upgrade make; fi;
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#
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# A simple test target used as part of the test to see if make supports
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# the -m argument.
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#
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test :
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#
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# Define the upgrade targets. These are listed here in alphabetical
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# order, but that's not important.
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#
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UPGRADE = aout-to-elf aout-to-elf-build aout-to-elf-install \
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move-aout-libs
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#
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# Handle the upgrade targets, using the source relative mk files.
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#
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upgrade: aout-to-elf
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${UPGRADE} : upgrade_checks
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@cd ${.CURDIR}; \
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${MAKE} -f Makefile.upgrade -m ${.CURDIR}/share/mk ${.TARGET}
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