aboutsummaryrefslogtreecommitdiffstats
path: root/mk/sys.mk
blob: 30eca9b845085b041d7afaf3187d8c535ac55462 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
# $Id: sys.mk,v 1.35 2012/11/12 06:27:51 sjg Exp $
#
#	@(#) Copyright (c) 2003-2009, Simon J. Gerraty
#
#	This file is provided in the hope that it will
#	be of use.  There is absolutely NO WARRANTY.
#	Permission to copy, redistribute or otherwise
#	use this file is hereby granted provided that 
#	the above copyright notice and this notice are
#	left intact. 
#      
#	Please send copies of changes and bug-fixes to:
#	sjg@crufty.net
#

# Avoid putting anything platform specific in here.

# We use the following paradigm for preventing multiple inclusion.
# It relies on the fact that conditionals and dependencies are resolved 
# at the time they are read.
#
# _this ?= ${.PARSEFILE}
# .if !target(__${_this}__)
# __${_this}__:
#
.if ${MAKE_VERSION:U0} > 20100408
_this = ${.PARSEDIR:tA}/${.PARSEFILE}
.else
_this = ${.PARSEDIR}/${.PARSEFILE}
.endif

# Sometimes we want to turn on debugging in just one or two places
# if .CURDIR is matched by any entry in DEBUG_MAKE_SYS_DIRS we
# will apply DEBUG_MAKE_FLAGS now.
# if an entry in DEBUG_MAKE_DIRS matches, we at the end of sys.mk
# eg.  DEBUG_MAKE_FLAGS=-dv DEBUG_MAKE_SYS_DIRS="*lib/sjg"
# use DEBUG_MAKE_FLAGS0 to apply only to .MAKE.LEVEL 0
#
.if ${.MAKE.LEVEL:U1} == 0
# we use indirection, to simplify the tests below, and incase
# DEBUG_* were given on our command line.
_DEBUG_MAKE_FLAGS = ${DEBUG_MAKE_FLAGS0}
_DEBUG_MAKE_SYS_DIRS = ${DEBUG_MAKE_SYS_DIRS0:U${DEBUG_MAKE_SYS_DIRS}}
_DEBUG_MAKE_DIRS = ${DEBUG_MAKE_DIRS0:U${DEBUG_MAKE_DIRS}}
.else
_DEBUG_MAKE_FLAGS = ${DEBUG_MAKE_FLAGS}
_DEBUG_MAKE_SYS_DIRS = ${DEBUG_MAKE_SYS_DIRS}
_DEBUG_MAKE_DIRS = ${DEBUG_MAKE_DIRS}
.endif

.if !empty(_DEBUG_MAKE_FLAGS)
.if ${_DEBUG_MAKE_SYS_DIRS:Uno:@x@${.CURDIR:M$x}@} != ""
.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS}
.endif
.endif

# if this is an ancient version of bmake
MAKE_VERSION ?= 0
.if ${MAKE_VERSION:M*make-*}
# turn it into what we want - just the date
MAKE_VERSION := ${MAKE_VERSION:[1]:C,.*-,,}
.endif

# some useful modifiers

# A useful trick for testing multiple :M's against something
# :L says to use the variable's name as its value - ie. literal
# got = ${clean* destroy:${M_ListToMatch:S,V,.TARGETS,}}
M_ListToMatch = L:@m@$${V:M$$m}@
# match against our initial targets (see above)
M_L_TARGETS = ${M_ListToMatch:S,V,_TARGETS,}

# turn a list into a set of :N modifiers
# NskipFoo = ${Foo:${M_ListToSkip}}
M_ListToSkip= O:u:ts::S,:,:N,g:S,^,N,

# type should be a builtin in any sh since about 1980,
# AUTOCONF := ${autoconf:L:${M_whence}}
M_type = @x@(type $$x 2> /dev/null); echo;@:sh:[0]:N* found*:[@]:C,[()],,g
M_whence = ${M_type}:M/*

# convert a path to a valid shell variable
M_P2V = tu:C,[./-],_,g

# convert path to absolute
.if ${MAKE_VERSION:U0} > 20100408
M_tA = tA
.else
M_tA = C,.*,('cd' & \&\& 'pwd') 2> /dev/null || echo &,:sh
.endif

# absoulte path to what we are reading.
_PARSEDIR = ${.PARSEDIR:${M_tA}}

# we expect a recent bmake
.if !defined(_TARGETS)
# some things we do only once
_TARGETS := ${.TARGETS}
.-include <sys.env.mk>
.endif

# we need HOST_TARGET etc below.
.include <host-target.mk>

# find the OS specifics
.if defined(SYS_OS_MK)
.include <${SYS_OS_MK}>
.else
_sys_mk =
.for x in ${HOST_OSTYPE} ${HOST_TARGET} ${HOST_OS} ${MACHINE} Generic
.if empty(_sys_mk)
.-include <sys/$x.mk>
_sys_mk := ${.MAKE.MAKEFILES:M*/$x.mk}
.if !empty(_sys_mk)
_sys_mk := sys/${_sys_mk:T}
.endif
.endif
.if empty(_sys_mk)
# might be an old style
.-include <$x.sys.mk>
_sys_mk := ${.MAKE.MAKEFILES:M*/$x.sys.mk:T}
.endif
.endfor

SYS_OS_MK := ${_sys_mk}
.export SYS_OS_MK
.endif

# allow customization without editing.
.-include <local.sys.mk>

# if you want objdirs make them automatic
.if ${MKOBJDIRS:Uno} == "auto"
.include <auto.obj.mk>
.endif

.if !empty(SRCTOP)
.if ${.CURDIR} == ${SRCTOP}
RELDIR = .
.elif ${.CURDIR:M${SRCTOP}/*}
RELDIR := ${.CURDIR:S,${SRCTOP}/,,}
.endif
.endif

MACHINE_ARCH.host ?= ${_HOST_ARCH}
MACHINE_ARCH.${MACHINE} ?= ${MACHINE}
.if empty(MACHINE_ARCH)
MACHINE_ARCH = ${MACHINE_ARCH.${MACHINE}}
.endif

.ifndef ROOT_GROUP
ROOT_GROUP != sed -n /:0:/s/:.*//p /etc/group
.export ROOT_GROUP
.endif

unix ?= We run ${_HOST_OSNAME}.

# A race condition in mkdir, means that it can bail if another
# process made a dir that mkdir expected to.
# We repeat the mkdir -p a number of times to try and work around this.
# We stop looping as soon as the dir exists.
# If we get to the end of the loop, a plain mkdir will issue an error.
Mkdirs= Mkdirs() { \
	for d in $$*; do \
		for i in 1 2 3 4 5 6; do \
			mkdir -p $$d; \
			test -d $$d && return 0; \
		done; \
		mkdir $$d || exit $$?; \
	done; }

# this often helps with debugging
.SUFFIXES:      .cpp-out

.c.cpp-out:
	@${COMPILE.c:N-c} -E ${.IMPSRC} | grep -v '^[ 	]*$$'

.cc.cpp-out:
	@${COMPILE.cc:N-c} -E ${.IMPSRC} | grep -v '^[ 	]*$$'

# we don't include own.mk but user can expect -DWITH_META_MODE to work
.if defined(WITHOUT_META_MODE)
USE_META= no
.elif defined(WITH_META_MODE)
USE_META= yes
.endif
.if ${USE_META:Uno} == "yes"
.-include <meta.sys.mk>
.endif
# make sure we have a harmless value
.MAKE.MODE ?= normal

# if .CURDIR is matched by any entry in DEBUG_MAKE_DIRS we
# will apply DEBUG_MAKE_FLAGS, now.
.if !empty(_DEBUG_MAKE_FLAGS)
.if ${_DEBUG_MAKE_DIRS:Uno:@x@${.CURDIR:M$x}@} != ""
.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS}
.endif
.endif