1# $Id: sys.mk,v 1.45 2017/02/05 01:26:13 sjg Exp $
2#
3#	@(#) Copyright (c) 2003-2009, Simon J. Gerraty
4#
5#	This file is provided in the hope that it will
6#	be of use.  There is absolutely NO WARRANTY.
7#	Permission to copy, redistribute or otherwise
8#	use this file is hereby granted provided that 
9#	the above copyright notice and this notice are
10#	left intact. 
11#      
12#	Please send copies of changes and bug-fixes to:
13#	sjg@crufty.net
14#
15
16# Avoid putting anything platform specific in here.
17
18# _DEBUG_MAKE_FLAGS etc.
19.include <sys.debug.mk>
20
21.if !empty(_DEBUG_MAKE_FLAGS)
22.if ${_DEBUG_MAKE_SYS_DIRS:Uno:@x@${.CURDIR:M$x}@} != ""
23.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS}
24.endif
25.endif
26
27# useful modifiers
28.include <sys.vars.mk>
29
30# we expect a recent bmake
31.if !defined(_TARGETS)
32# some things we do only once
33_TARGETS := ${.TARGETS}
34.-include <sys.env.mk>
35.endif
36
37# we need HOST_TARGET etc below.
38.include <host-target.mk>
39
40# early customizations
41.-include <local.sys.env.mk>
42
43# Popular suffixes for C++
44CXX_SUFFIXES += .cc .cpp .cxx .C
45CXX_SUFFIXES := ${CXX_SUFFIXES:O:u}
46
47# find the OS specifics
48.if defined(SYS_OS_MK)
49.include <${SYS_OS_MK}>
50.else
51_sys_mk =
52.for x in ${HOST_OSTYPE} ${HOST_TARGET} ${HOST_OS} ${MACHINE} Generic
53.if empty(_sys_mk)
54.-include <sys/$x.mk>
55_sys_mk := ${.MAKE.MAKEFILES:M*/$x.mk}
56.if !empty(_sys_mk)
57_sys_mk := sys/${_sys_mk:T}
58.endif
59.endif
60.if empty(_sys_mk)
61# might be an old style
62.-include <$x.sys.mk>
63_sys_mk := ${.MAKE.MAKEFILES:M*/$x.sys.mk:T}
64.endif
65.endfor
66
67SYS_OS_MK := ${_sys_mk}
68.export SYS_OS_MK
69.endif
70
71# some options we need to know early
72OPTIONS_DEFAULT_NO += \
73	DIRDEPS_BUILD \
74	DIRDEPS_CACHE
75
76OPTIONS_DEFAULT_DEPENDENT += \
77	AUTO_OBJ/DIRDEPS_BUILD \
78	META_MODE/DIRDEPS_BUILD \
79	STAGING/DIRDEPS_BUILD \
80
81.-include <options.mk>
82
83.if ${MK_DIRDEPS_BUILD:Uno} == "yes"
84MK_META_MODE = yes
85.-include <meta.sys.mk>
86.elif ${MK_META_MODE:Uno} == "yes"
87.MAKE.MODE = meta verbose
88.endif
89# make sure we have a harmless value
90.MAKE.MODE ?= normal
91
92# if you want objdirs make them automatic
93# and do it early before we compute .PATH
94.if ${MK_AUTO_OBJ:Uno} == "yes" || ${MKOBJDIRS:Uno} == "auto"
95.include <auto.obj.mk>
96.endif
97
98.if !empty(SRCTOP)
99.if ${.CURDIR} == ${SRCTOP}
100RELDIR = .
101.elif ${.CURDIR:M${SRCTOP}/*}
102RELDIR := ${.CURDIR:S,${SRCTOP}/,,}
103.endif
104.endif
105
106MACHINE_ARCH.host ?= ${_HOST_ARCH}
107MACHINE_ARCH.${MACHINE} ?= ${MACHINE}
108.if empty(MACHINE_ARCH)
109MACHINE_ARCH = ${MACHINE_ARCH.${MACHINE}}
110.endif
111
112.ifndef ROOT_GROUP
113ROOT_GROUP != sed -n /:0:/s/:.*//p /etc/group
114.export ROOT_GROUP
115.endif
116
117unix ?= We run ${_HOST_OSNAME}.
118
119# A race condition in mkdir, means that it can bail if another
120# process made a dir that mkdir expected to.
121# We repeat the mkdir -p a number of times to try and work around this.
122# We stop looping as soon as the dir exists.
123# If we get to the end of the loop, a plain mkdir will issue an error.
124Mkdirs= Mkdirs() { \
125	for d in $$*; do \
126		for i in 1 2 3 4 5 6; do \
127			mkdir -p $$d; \
128			test -d $$d && return 0; \
129		done; \
130		mkdir $$d || exit $$?; \
131	done; }
132
133# this often helps with debugging
134.SUFFIXES:      .cpp-out
135
136.c.cpp-out:
137	@${COMPILE.c:N-c} -E ${.IMPSRC} | grep -v '^[ 	]*$$'
138
139${CXX_SUFFIXES:%=%.cpp-out}:
140	@${COMPILE.cc:N-c} -E ${.IMPSRC} | grep -v '^[ 	]*$$'
141
142# late customizations
143.-include <local.sys.mk>
144
145# if .CURDIR is matched by any entry in DEBUG_MAKE_DIRS we
146# will apply DEBUG_MAKE_FLAGS, now.
147.if !empty(_DEBUG_MAKE_FLAGS)
148.if ${_DEBUG_MAKE_DIRS:Uno:@x@${.CURDIR:M$x}@} != ""
149.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS}
150.endif
151.endif
152