Makefile revision 38978
1193635Sedwin# 2193635Sedwin# $Id: Makefile,v 1.215 1998/09/07 18:10:26 ache Exp $ 3193635Sedwin# 4193635Sedwin# The user-driven targets are: 5193635Sedwin# 6193635Sedwin# buildworld - Rebuild *everything*, including glue to help do 7193635Sedwin# upgrades. 8193635Sedwin# installworld - Install everything built by "buildworld". 9193635Sedwin# world - buildworld + installworld. 10193635Sedwin# update - Convenient way to update your source tree (cvs). 11193635Sedwin# most - Build user commands, no libraries or include files. 12193635Sedwin# installmost - Install user commands, no libraries or include files. 13193635Sedwin# aout-to-elf - Upgrade an system from a.out to elf format (see below). 14193635Sedwin# aout-to-elf-build - Build everything required to upgrade a system from 15193635Sedwin# a.out to elf format (see below). 16195652Sdwmalone# aout-to-elf-install - Install everything built by aout-to-elf-build (see 17195652Sdwmalone# below). 18195652Sdwmalone# move-aout-libs - Move the a.out libraries into an aout sub-directory 19193635Sedwin# of each elf library sub-directory. 20259974Sdelphij# 21193635Sedwin# This makefile is simple by design. The FreeBSD make automatically reads 22239464Sdelphij# the /usr/share/mk/sys.mk unless the -m argument is specified on the 23239464Sdelphij# command line. By keeping this makefile simple, it doesn't matter too 24239464Sdelphij# much how different the installed mk files are from those in the source 25239464Sdelphij# tree. This makefile executes a child make process, forcing it to use 26193635Sedwin# the mk files from the source tree which are supposed to DTRT. 27193635Sedwin# 28193635Sedwin# The user-driven targets (as listed above) are implemented in Makefile.inc0 29193635Sedwin# and the private targets are in Makefile.inc1. These are kept separate 30195652Sdwmalone# to help the bootstrap build from aout to elf format. 31193635Sedwin# 32193635Sedwin# For novices wanting to build from current sources, the simple instructions 33239464Sdelphij# are: 34239464Sdelphij# 35239464Sdelphij# 1. Ensure that your /usr/obj directory has at least 165 Mb of free space. 36193635Sedwin# 2. `cd /usr/src' (or to the directory containing your source tree). 37193635Sedwin# 3. `make world' 38259974Sdelphij# 39193635Sedwin# Be warned, this will update your installed system, except for configuration 40259974Sdelphij# files in the /etc directory. You have to do those manually. 41259974Sdelphij# 42259974Sdelphij# If at first you're a little nervous about having a `make world' update 43259974Sdelphij# your system, a `make buildworld' will build everything in the /usr/obj 44259974Sdelphij# tree without touching your installed system. To be of any further use 45259974Sdelphij# though, a `make installworld' is required. 46285612Sdelphij# 47285612Sdelphij# The `make world' process always follows the installed object format. 48259974Sdelphij# This is set by creating /etc/objformat containing either OBJFORMAT=aout 49259974Sdelphij# or OBJFORMAT=elf. If this file does not exist, the object format defaults 50259974Sdelphij# to aout. This is expected to be changed to elf just prior to the release 51259974Sdelphij# or 3.0. If OBJFORMAT is set as an environment variable or in /etc/make.conf, 52259974Sdelphij# this overrides /etc/objformat. 53259974Sdelphij# 54259974Sdelphij# Unless -DNOAOUT is specified, a `make world' with OBJFORMAT=elf will 55259974Sdelphij# update the legacy support for aout. This includes all libraries, ld.so, 56259974Sdelphij# lkms and boot objects. This part of build should be regarded as 57259974Sdelphij# deprecated and you should _not_ expect to be able to do this past the 58193635Sedwin# release of 3.1. You have exactly one major release to move entirely 59193635Sedwin# to elf. 60193635Sedwin# 61193635Sedwin# ---------------------------------------------------------------------------- 62193635Sedwin# 63193635Sedwin# Upgrading an i386 system from a.out to elf format 64259974Sdelphij# 65259974Sdelphij# 66259974Sdelphij# The aout->elf transition build is performed by doing a `make aout-to-elf' 67259974Sdelphij# or a `make aout-to-elf-build' followed by a `make aout-to-elf-install'. 68259974Sdelphij# You need to have at least 320 Mb of free space for the object tree. 69193635Sedwin# 70193635Sedwin# The upgrade process checks the installed release. If this is 3.0-CURRENT, 71195652Sdwmalone# it is assumed that your kernel contains all the syscalls required by the 72195652Sdwmalone# current sources. 73195652Sdwmalone# 74195652Sdwmalone# For installed systems where `uname -r' reports something other than 75195652Sdwmalone# 3.0-CURRENT, the upgrade process expects to build a kernel using the 76195652Sdwmalone# kernel configuration file sys/i386/conf/GENERICupgrade. This file is 77193635Sedwin# defaulted to the GENERIC kernel configuration file on the assumption that 78195652Sdwmalone# it will be suitable for most systems. Before performing the upgrade, 79195652Sdwmalone# 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 clean cleandepend cleanobj depend \ 96 distribute everything includes installmost install installworld \ 97 most obj rerelease update world 98 99# 100# Handle the user-driven targets, using the source relative mk files. 101# 102${TGTS} : upgrade_checks 103 @cd ${.CURDIR}; \ 104 make -f Makefile.inc0 -m ${.CURDIR}/share/mk ${.TARGET} 105 106# 107# Perform a few tests to determine if the installed tools are adequate 108# for building the world. These are for older systems (prior to 2.2.5). 109# 110# From 2.2.5 onwards, the installed tools will pass these upgrade tests, 111# so the normal make world is capable of doing what is required to update 112# the system to current. 113# 114upgrade_checks : 115 @cd ${.CURDIR}; if `make -m ${.CURDIR}/share/mk test > /dev/null 2>&1`; then ok=1; else make -f Makefile.upgrade make; fi; 116 117# 118# A simple test target used as part of the test to see if make supports 119# the -m argument. 120# 121test : 122 123# 124# Define the upgrade targets. These are listed here in alphabetical 125# order, but that's not important. 126# 127UPGRADE = aout-to-elf aout-to-elf-build aout-to-elf-install \ 128 move-aout-libs 129 130# 131# Handle the upgrade targets, using the source relative mk files. 132# 133${UPGRADE} : upgrade_checks 134 @cd ${.CURDIR}; \ 135 make -f Makefile.upgrade -m ${.CURDIR}/share/mk ${.TARGET} 136