Makefile revision 40495
1# 2# $Id: Makefile,v 1.220 1998/09/29 22:03:12 jkh Exp $ 3# 4# The user-driven targets are: 5# 6# buildworld - Rebuild *everything*, including glue to help do 7# upgrades. 8# installworld - Install everything built by "buildworld". 9# world - buildworld + installworld. 10# update - Convenient way to update your source tree (cvs). 11# most - Build user commands, no libraries or include files. 12# installmost - Install user commands, no libraries or include files. 13# aout-to-elf - Upgrade an system from a.out to elf format (see below). 14# aout-to-elf-build - Build everything required to upgrade a system from 15# a.out to elf format (see below). 16# aout-to-elf-install - Install everything built by aout-to-elf-build (see 17# below). 18# move-aout-libs - Move the a.out libraries into an aout sub-directory 19# of each elf library sub-directory. 20# 21# This makefile is simple by design. The FreeBSD make automatically reads 22# the /usr/share/mk/sys.mk unless the -m argument is specified on the 23# command line. By keeping this makefile simple, it doesn't matter too 24# much how different the installed mk files are from those in the source 25# tree. This makefile executes a child make process, forcing it to use 26# the mk files from the source tree which are supposed to DTRT. 27# 28# The user-driven targets (as listed above) are implemented in Makefile.inc0 29# and the private targets are in Makefile.inc1. These are kept separate 30# to help the bootstrap build from aout to elf format. 31# 32# For novices wanting to build from current sources, the simple instructions 33# are: 34# 35# 1. Ensure that your /usr/obj directory has at least 260 Mb of free space. 36# 2. `cd /usr/src' (or to the directory containing your source tree). 37# 3. `make world' 38# 39# Be warned, this will update your installed system, except for configuration 40# files in the /etc directory. You have to do those manually. 41# 42# If at first you're a little nervous about having a `make world' update 43# your system, a `make buildworld' will build everything in the /usr/obj 44# tree without touching your installed system. To be of any further use 45# though, a `make installworld' is required. 46# 47# The `make world' process always follows the installed object format. 48# This is set by creating /etc/objformat containing either OBJFORMAT=aout 49# or OBJFORMAT=elf. If this file does not exist, the object format defaults 50# to aout. This is expected to be changed to elf just prior to the release 51# or 3.0. If OBJFORMAT is set as an environment variable or in /etc/make.conf, 52# this overrides /etc/objformat. 53# 54# Unless -DNOAOUT is specified, a `make world' with OBJFORMAT=elf will 55# update the legacy support for aout. This includes all libraries, ld.so, 56# lkms and boot objects. This part of build should be regarded as 57# deprecated and you should _not_ expect to be able to do this past the 58# release of 3.1. You have exactly one major release to move entirely 59# to elf. 60# 61# ---------------------------------------------------------------------------- 62# 63# Upgrading an i386 system from a.out to elf format 64# 65# 66# The aout->elf transition build is performed by doing a `make aout-to-elf' 67# or a `make aout-to-elf-build' followed by a `make aout-to-elf-install'. 68# You need to have at least 320 Mb of free space for the object tree. 69# 70# The upgrade process checks the installed release. If this is 3.0-CURRENT, 71# it is assumed that your kernel contains all the syscalls required by the 72# current sources. 73# 74# For installed systems where `uname -r' reports something other than 75# 3.0-CURRENT, the upgrade process expects to build a kernel using the 76# kernel configuration file sys/i386/conf/GENERICupgrade. This file is 77# defaulted to the GENERIC kernel configuration file on the assumption that 78# it will be suitable for most systems. Before performing the upgrade, 79# replace sys/i386/conf/GENERICupgrade with your own version if your 80# hardware requires a different configuration. 81# 82# The upgrade procedure will stop and ask for confirmation to proceed 83# several times. On each occasion, you can type Ctrl-C to abort the 84# upgrade. 85# 86# At the end of the upgrade procedure, /etc/objformat is created or 87# updated to contain OBJFORMAT=elf. From then on, you're elf by default. 88# 89# ---------------------------------------------------------------------------- 90# 91# 92# Define the user-driven targets. These are listed here in alphabetical 93# order, but that's not important. 94# 95TGTS = afterdistribute all buildworld checkdpadd clean cleandepend cleandir \ 96 depend distribute everything hierarchy includes install installmost \ 97 installworld lint maninstall mk most obj objlink regress rerelease \ 98 tags update world 99 100# 101# Handle the user-driven targets, using the source relative mk files. 102# 103${TGTS} : upgrade_checks 104 @cd ${.CURDIR}; \ 105 make -f Makefile.inc0 -m ${.CURDIR}/share/mk ${.TARGET} 106 107# Set a reasonable default 108.MAIN: all 109 110# 111# Perform a few tests to determine if the installed tools are adequate 112# for building the world. These are for older systems (prior to 2.2.5). 113# 114# From 2.2.5 onwards, the installed tools will pass these upgrade tests, 115# so the normal make world is capable of doing what is required to update 116# the system to current. 117# 118upgrade_checks : 119 @cd ${.CURDIR}; if `make -m ${.CURDIR}/share/mk test > /dev/null 2>&1`; then ok=1; else make -f Makefile.upgrade make; fi; 120 121# 122# A simple test target used as part of the test to see if make supports 123# the -m argument. 124# 125test : 126 127# 128# Define the upgrade targets. These are listed here in alphabetical 129# order, but that's not important. 130# 131UPGRADE = aout-to-elf aout-to-elf-build aout-to-elf-install \ 132 move-aout-libs 133 134# 135# Handle the upgrade targets, using the source relative mk files. 136# 137${UPGRADE} : upgrade_checks 138 @cd ${.CURDIR}; \ 139 make -f Makefile.upgrade -m ${.CURDIR}/share/mk ${.TARGET} 140