xref: /freebsd/Makefile (revision 42c159fe388a3765f69860c84183700af37aca8a)
1#
2# $FreeBSD$
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# buildkernel         - Rebuild the kernel and the kernel-modules.
11# installkernel       - Install the kernel and the kernel-modules.
12# reinstallkernel     - Reinstall the kernel and the kernel-modules.
13# kernel              - buildkernel + installkernel.
14# update              - Convenient way to update your source tree (cvs).
15# upgrade             - Upgrade a.out (2.2.x/3.0) system to the new ELF way
16# most                - Build user commands, no libraries or include files.
17# installmost         - Install user commands, no libraries or include files.
18# aout-to-elf         - Upgrade an system from a.out to elf format (see below).
19# aout-to-elf-build   - Build everything required to upgrade a system from
20#                       a.out to elf format (see below).
21# aout-to-elf-install - Install everything built by aout-to-elf-build (see
22#                       below).
23# move-aout-libs      - Move the a.out libraries into an aout sub-directory
24#                       of each elf library sub-directory.
25#
26# This makefile is simple by design. The FreeBSD make automatically reads
27# the /usr/share/mk/sys.mk unless the -m argument is specified on the
28# command line. By keeping this makefile simple, it doesn't matter too
29# much how different the installed mk files are from those in the source
30# tree. This makefile executes a child make process, forcing it to use
31# the mk files from the source tree which are supposed to DTRT.
32#
33# The user-driven targets (as listed above) are implemented in Makefile.inc1.
34#
35# For novices wanting to build from current sources, the simple instructions
36# are:
37#
38# 1.  Ensure that your /usr/obj directory has at least 260 Mb of free space.
39# 2.  `cd /usr/src'  (or to the directory containing your source tree).
40# 3.  `make world'
41#
42# Be warned, this will update your installed system, except for configuration
43# files in the /etc directory and for the kernel. You have to do those manually.
44#
45# If at first you're a little nervous about having a `make world' update
46# your system, a `make buildworld' will build everything in the /usr/obj
47# tree without touching your installed system. To be of any further use
48# though, a `make installworld' is required.
49#
50# If -DWANT_AOUT is specified, a `make world' with OBJFORMAT=elf will
51# update the legacy support for aout. This includes all libraries, ld.so
52# and boot objects. This part of build should be regarded as
53# deprecated and you should _not_ expect to be able to do this past the
54# release of 4.0. You have exactly one major release to move entirely
55# to elf.
56#
57# ----------------------------------------------------------------------------
58#
59#           Upgrading an i386 system from a.out to elf format
60#
61#
62# The aout->elf transition build is performed by doing a `make upgrade' (or
63# `make aout-to-elf') or in two steps by a `make aout-to-elf-build' followed
64# by a `make aout-to-elf-install', depending on user preference.
65# You need to have at least 320 Mb of free space for the object tree.
66#
67# The upgrade process checks the installed release. If this is 3.0-CURRENT,
68# it is assumed that your kernel contains all the syscalls required by the
69# current sources.
70#
71# The upgrade procedure will stop and ask for confirmation to proceed
72# several times. On each occasion, you can type Ctrl-C to abort the
73# upgrade.  Optionally, you can also start it with NOCONFIRM=yes and skip
74# the confirmation steps.
75#
76# At the end of the upgrade procedure, /etc/objformat is created or
77# updated to contain OBJFORMAT=elf. From then on, you're elf by default.
78#
79# ----------------------------------------------------------------------------
80#
81#
82# Define the user-driven targets. These are listed here in alphabetical
83# order, but that's not important.
84#
85TGTS=	afterdistribute all all-man buildkernel buildworld checkdpadd clean \
86	cleandepend cleandir depend distribute distribworld everything \
87	hierarchy includes install installkernel kernel reinstallkernel \
88	installmost installworld libraries lint maninstall mk most obj \
89	objlink regress rerelease tags update
90
91PATH=	/sbin:/bin:/usr/sbin:/usr/bin
92MAKE=	PATH=${PATH} make -m ${.CURDIR}/share/mk -f Makefile.inc1
93
94#
95# Handle the user-driven targets, using the source relative mk files.
96#
97${TGTS}: upgrade_checks
98	@cd ${.CURDIR}; \
99		${MAKE} ${.TARGET}
100
101# Set a reasonable default
102.MAIN:	all
103
104STARTTIME!= LC_ALL=C date
105#
106# world
107#
108# Attempt to rebuild and reinstall *everything*, with reasonable chance of
109# success, regardless of how old your existing system is.
110#
111world: upgrade_checks
112	@echo "--------------------------------------------------------------"
113	@echo ">>> ${OBJFORMAT} make world started on ${STARTTIME}"
114	@echo "--------------------------------------------------------------"
115.if target(pre-world)
116	@echo
117	@echo "--------------------------------------------------------------"
118	@echo ">>> Making 'pre-world' target"
119	@echo "--------------------------------------------------------------"
120	@cd ${.CURDIR}; ${MAKE} pre-world
121.endif
122	@cd ${.CURDIR}; ${MAKE} buildworld
123	@cd ${.CURDIR}; ${MAKE} -B installworld
124.if target(post-world)
125	@echo
126	@echo "--------------------------------------------------------------"
127	@echo ">>> Making 'post-world' target"
128	@echo "--------------------------------------------------------------"
129	@cd ${.CURDIR}; ${MAKE} post-world
130.endif
131	@echo
132	@echo "--------------------------------------------------------------"
133	@printf ">>> ${OBJFORMAT} make world completed on `LC_ALL=C date`\n                        (started ${STARTTIME})\n"
134	@echo "--------------------------------------------------------------"
135
136#
137# Perform a few tests to determine if the installed tools are adequate
138# for building the world. These are for older systems (prior to 2.2.5).
139#
140# From 2.2.5 onwards, the installed tools will pass these upgrade tests,
141# so the normal make world is capable of doing what is required to update
142# the system to current.
143#
144upgrade_checks:
145	@cd ${.CURDIR}; \
146		if ! make -m ${.CURDIR}/share/mk test > /dev/null 2>&1; then \
147			make make; \
148		fi
149	@cd ${.CURDIR}; \
150		if make -V .CURDIR:C/.// 2>&1 >/dev/null | \
151		    grep -q "Unknown modifier 'C'"; then \
152			make make; \
153		fi
154
155#
156# A simple test target used as part of the test to see if make supports
157# the -m argument.
158#
159test:
160
161#
162# Upgrade the installed make to the current version using the installed
163# headers, libraries and build tools. This is required on installed versions
164# prior to 2.2.5 in which the installed make doesn't support the -m argument.
165#
166make:
167	@echo
168	@echo "--------------------------------------------------------------"
169	@echo " Upgrading the installed make"
170	@echo "--------------------------------------------------------------"
171	@cd ${.CURDIR}/usr.bin/make; \
172		make obj && make depend && make all && make install
173
174#
175# Define the upgrade targets. These are listed here in alphabetical
176# order, but that's not important.
177#
178UPGRADE=	aout-to-elf aout-to-elf-build aout-to-elf-install \
179		move-aout-libs
180
181#
182# Handle the upgrade targets, using the source relative mk files.
183#
184
185upgrade:	aout-to-elf
186
187${UPGRADE} : upgrade_checks
188	@cd ${.CURDIR}; \
189		${MAKE} -f Makefile.upgrade -m ${.CURDIR}/share/mk ${.TARGET}
190