Makefile revision 45108
1# 2# $Id: Makefile,v 1.225 1999/03/20 20:10:19 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# upgrade - Upgrade a.out (2.2.x/3.0) system to the new ELF way 12# most - Build user commands, no libraries or include files. 13# installmost - Install user commands, no libraries or include files. 14# aout-to-elf - Upgrade an system from a.out to elf format (see below). 15# aout-to-elf-build - Build everything required to upgrade a system from 16# a.out to elf format (see below). 17# aout-to-elf-install - Install everything built by aout-to-elf-build (see 18# below). 19# move-aout-libs - Move the a.out libraries into an aout sub-directory 20# of each elf library sub-directory. 21# 22# This makefile is simple by design. The FreeBSD make automatically reads 23# the /usr/share/mk/sys.mk unless the -m argument is specified on the 24# command line. By keeping this makefile simple, it doesn't matter too 25# much how different the installed mk files are from those in the source 26# tree. This makefile executes a child make process, forcing it to use 27# the mk files from the source tree which are supposed to DTRT. 28# 29# The user-driven targets (as listed above) are implemented in Makefile.inc0 30# and the private targets are in Makefile.inc1. These are kept separate 31# to help the bootstrap build from aout to elf format. 32# 33# For novices wanting to build from current sources, the simple instructions 34# are: 35# 36# 1. Ensure that your /usr/obj directory has at least 260 Mb of free space. 37# 2. `cd /usr/src' (or to the directory containing your source tree). 38# 3. `make world' 39# 40# Be warned, this will update your installed system, except for configuration 41# files in the /etc directory. You have to do those manually. 42# 43# If at first you're a little nervous about having a `make world' update 44# your system, a `make buildworld' will build everything in the /usr/obj 45# tree without touching your installed system. To be of any further use 46# though, a `make installworld' is required. 47# 48# The `make world' process always follows the installed object format. 49# This is set by creating /etc/objformat containing either OBJFORMAT=aout 50# or OBJFORMAT=elf. If this file does not exist, the object format defaults 51# to aout. This is expected to be changed to elf just prior to the release 52# or 3.0. If OBJFORMAT is set as an environment variable or in /etc/make.conf, 53# this overrides /etc/objformat. 54# 55# If -DWANT_AOUT is specified, a `make world' with OBJFORMAT=elf will 56# update the legacy support for aout. This includes all libraries, ld.so 57# and boot objects. This part of build should be regarded as 58# deprecated and you should _not_ expect to be able to do this past the 59# release of 3.1. You have exactly one major release to move entirely 60# to elf. 61# 62# ---------------------------------------------------------------------------- 63# 64# Upgrading an i386 system from a.out to elf format 65# 66# 67# The aout->elf transition build is performed by doing a `make upgrade' (or 68# `make aout-to-elf') or in two steps by a `make aout-to-elf-build' followed 69# by a `make aout-to-elf-install', depending on user preference. 70# You need to have at least 320 Mb of free space for the object tree. 71# 72# The upgrade process checks the installed release. If this is 3.0-CURRENT, 73# it is assumed that your kernel contains all the syscalls required by the 74# current sources. 75# 76# The upgrade procedure will stop and ask for confirmation to proceed 77# several times. On each occasion, you can type Ctrl-C to abort the 78# upgrade. Optionally, you can also start it with NOCONFIRM=yes and skip 79# the confirmation steps. 80# 81# At the end of the upgrade procedure, /etc/objformat is created or 82# updated to contain OBJFORMAT=elf. From then on, you're elf by default. 83# 84# ---------------------------------------------------------------------------- 85# 86# 87# Define the user-driven targets. These are listed here in alphabetical 88# order, but that's not important. 89# 90TGTS = afterdistribute all buildworld checkdpadd clean cleandepend cleandir \ 91 depend distribute everything hierarchy includes install installmost \ 92 installworld lint maninstall mk most obj objlink regress rerelease \ 93 tags update world 94 95# 96# Handle the user-driven targets, using the source relative mk files. 97# 98${TGTS} : upgrade_checks 99 @cd ${.CURDIR}; \ 100 ${MAKE} -f Makefile.inc0 -m ${.CURDIR}/share/mk ${.TARGET} 101 102# Set a reasonable default 103.MAIN: all 104 105# 106# Perform a few tests to determine if the installed tools are adequate 107# for building the world. These are for older systems (prior to 2.2.5). 108# 109# From 2.2.5 onwards, the installed tools will pass these upgrade tests, 110# so the normal make world is capable of doing what is required to update 111# the system to current. 112# 113upgrade_checks : 114 @cd ${.CURDIR}; if `make -m ${.CURDIR}/share/mk test > /dev/null 2>&1`; then ok=1; else ${MAKE} -f Makefile.upgrade make; fi; 115 116# 117# A simple test target used as part of the test to see if make supports 118# the -m argument. 119# 120test : 121 122# 123# Define the upgrade targets. These are listed here in alphabetical 124# order, but that's not important. 125# 126UPGRADE = aout-to-elf aout-to-elf-build aout-to-elf-install \ 127 move-aout-libs 128 129# 130# Handle the upgrade targets, using the source relative mk files. 131# 132 133upgrade: aout-to-elf 134 135${UPGRADE} : upgrade_checks 136 @cd ${.CURDIR}; \ 137 ${MAKE} -f Makefile.upgrade -m ${.CURDIR}/share/mk ${.TARGET} 138