Makefile revision 41257
1179260Sjb# 2179260Sjb# $Id: Makefile,v 1.220 1998/09/29 22:03:12 jkh Exp $ 3179260Sjb# 4179260Sjb# The user-driven targets are: 5179260Sjb# 6179260Sjb# buildworld - Rebuild *everything*, including glue to help do 7179260Sjb# upgrades. 8179260Sjb# installworld - Install everything built by "buildworld". 9179260Sjb# world - buildworld + installworld. 10179260Sjb# update - Convenient way to update your source tree (cvs). 11179260Sjb# most - Build user commands, no libraries or include files. 12179260Sjb# installmost - Install user commands, no libraries or include files. 13179260Sjb# aout-to-elf - Upgrade an system from a.out to elf format (see below). 14179260Sjb# aout-to-elf-build - Build everything required to upgrade a system from 15179260Sjb# a.out to elf format (see below). 16179260Sjb# aout-to-elf-install - Install everything built by aout-to-elf-build (see 17179260Sjb# below). 18179260Sjb# move-aout-libs - Move the a.out libraries into an aout sub-directory 19179260Sjb# of each elf library sub-directory. 20179260Sjb# 21179260Sjb# This makefile is simple by design. The FreeBSD make automatically reads 22179260Sjb# the /usr/share/mk/sys.mk unless the -m argument is specified on the 23179260Sjb# command line. By keeping this makefile simple, it doesn't matter too 24179260Sjb# much how different the installed mk files are from those in the source 25179260Sjb# tree. This makefile executes a child make process, forcing it to use 26179260Sjb# the mk files from the source tree which are supposed to DTRT. 27179260Sjb# 28179260Sjb# The user-driven targets (as listed above) are implemented in Makefile.inc0 29179260Sjb# and the private targets are in Makefile.inc1. These are kept separate 30179260Sjb# to help the bootstrap build from aout to elf format. 31179260Sjb# 32179260Sjb# For novices wanting to build from current sources, the simple instructions 33179260Sjb# are: 34179260Sjb# 35179260Sjb# 1. Ensure that your /usr/obj directory has at least 260 Mb of free space. 36179260Sjb# 2. `cd /usr/src' (or to the directory containing your source tree). 37179260Sjb# 3. `make world' 38179260Sjb# 39179260Sjb# Be warned, this will update your installed system, except for configuration 40179260Sjb# files in the /etc directory. You have to do those manually. 41179260Sjb# 42179260Sjb# If at first you're a little nervous about having a `make world' update 43179260Sjb# your system, a `make buildworld' will build everything in the /usr/obj 44179260Sjb# tree without touching your installed system. To be of any further use 45179260Sjb# though, a `make installworld' is required. 46179260Sjb# 47179260Sjb# The `make world' process always follows the installed object format. 48179260Sjb# This is set by creating /etc/objformat containing either OBJFORMAT=aout 49179260Sjb# or OBJFORMAT=elf. If this file does not exist, the object format defaults 50179260Sjb# to aout. This is expected to be changed to elf just prior to the release 51179260Sjb# or 3.0. If OBJFORMAT is set as an environment variable or in /etc/make.conf, 52179260Sjb# this overrides /etc/objformat. 53179260Sjb# 54179260Sjb# Unless -DNOAOUT is specified, a `make world' with OBJFORMAT=elf will 55179260Sjb# update the legacy support for aout. This includes all libraries, ld.so, 56179260Sjb# lkms and boot objects. This part of build should be regarded as 57179260Sjb# deprecated and you should _not_ expect to be able to do this past the 58179260Sjb# release of 3.1. You have exactly one major release to move entirely 59179260Sjb# to elf. 60179260Sjb# 61179260Sjb# ---------------------------------------------------------------------------- 62179260Sjb# 63179260Sjb# Upgrading an i386 system from a.out to elf format 64179260Sjb# 65179260Sjb# 66179260Sjb# The aout->elf transition build is performed by doing a `make aout-to-elf' 67179260Sjb# or a `make aout-to-elf-build' followed by a `make aout-to-elf-install'. 68179260Sjb# You need to have at least 320 Mb of free space for the object tree. 69179260Sjb# 70179260Sjb# The upgrade process checks the installed release. If this is 3.0-CURRENT, 71179260Sjb# it is assumed that your kernel contains all the syscalls required by the 72179260Sjb# current sources. 73179260Sjb# 74179260Sjb# For installed systems where `uname -r' reports something other than 75179260Sjb# 3.0-CURRENT, the upgrade process expects to build a kernel using the 76179260Sjb# kernel configuration file sys/i386/conf/GENERICupgrade. This file is 77179260Sjb# defaulted to the GENERIC kernel configuration file on the assumption that 78179260Sjb# it will be suitable for most systems. Before performing the upgrade, 79179260Sjb# replace sys/i386/conf/GENERICupgrade with your own version if your 80179260Sjb# hardware requires a different configuration. 81179260Sjb# 82179260Sjb# The upgrade procedure will stop and ask for confirmation to proceed 83179260Sjb# several times. On each occasion, you can type Ctrl-C to abort the 84179260Sjb# upgrade. 85179260Sjb# 86179260Sjb# At the end of the upgrade procedure, /etc/objformat is created or 87179260Sjb# updated to contain OBJFORMAT=elf. From then on, you're elf by default. 88179260Sjb# 89179260Sjb# ---------------------------------------------------------------------------- 90179260Sjb# 91179260Sjb# 92179260Sjb# Define the user-driven targets. These are listed here in alphabetical 93179260Sjb# order, but that's not important. 94179260Sjb# 95179260SjbTGTS = afterdistribute all buildworld checkdpadd clean cleandepend cleandir \ 96179260Sjb depend distribute everything hierarchy includes install installmost \ 97179260Sjb installworld lint maninstall mk most obj objlink regress rerelease \ 98179260Sjb tags update world 99179260Sjb 100179260Sjb# 101179260Sjb# Handle the user-driven targets, using the source relative mk files. 102179260Sjb# 103179260Sjb${TGTS} : upgrade_checks 104179260Sjb @cd ${.CURDIR}; \ 105179260Sjb make -f Makefile.inc0 -m ${.CURDIR}/share/mk ${.TARGET} 106179260Sjb 107179260Sjb# Set a reasonable default 108179260Sjb.MAIN: all 109179260Sjb 110179260Sjb# 111179260Sjb# Perform a few tests to determine if the installed tools are adequate 112179260Sjb# for building the world. These are for older systems (prior to 2.2.5). 113179260Sjb# 114179260Sjb# From 2.2.5 onwards, the installed tools will pass these upgrade tests, 115179260Sjb# so the normal make world is capable of doing what is required to update 116179260Sjb# the system to current. 117179260Sjb# 118179260Sjbupgrade_checks : 119179260Sjb @cd ${.CURDIR}; if `make -m ${.CURDIR}/share/mk test > /dev/null 2>&1`; then ok=1; else make -f Makefile.upgrade make; fi; 120179260Sjb 121179260Sjb# 122179260Sjb# A simple test target used as part of the test to see if make supports 123179260Sjb# the -m argument. 124179260Sjb# 125179260Sjbtest : 126179260Sjb 127179260Sjb# 128179260Sjb# Define the upgrade targets. These are listed here in alphabetical 129179260Sjb# order, but that's not important. 130179260Sjb# 131179260SjbUPGRADE = aout-to-elf aout-to-elf-build aout-to-elf-install \ 132179260Sjb move-aout-libs 133179260Sjb 134179260Sjb# 135179260Sjb# Handle the upgrade targets, using the source relative mk files. 136179260Sjb# 137179260Sjb${UPGRADE} : upgrade_checks 138179260Sjb @cd ${.CURDIR}; \ 139179260Sjb make -f Makefile.upgrade -m ${.CURDIR}/share/mk ${.TARGET} 140179260Sjb