kern.opts.mk revision 296770 
1# $FreeBSD: head/sys/conf/kern.opts.mk 296770 2016-03-12 22:21:02Z bdrewery $
2
3# Options set in the build system that affect the kernel somehow.
4
5#
6# Define MK_* variables (which are either "yes" or "no") for users
7# to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
8# make(1) environment.
9# These should be tested with `== "no"' or `!= "no"' in makefiles.
10# The NO_* variables should only be set by makefiles for variables
11# that haven't been converted over.
12#
13
14# Note: bsd.own.mk must be included before the rest of kern.opts.mk to make
15# building on 10.x and earlier work. This should be removed when that's no
16# longer supported since it confounds the defaults (since it uses the host's
17# notion of defaults rather than what's default in current when building
18# within sys/modules).
19.include <bsd.own.mk>
20
21# These options are used by the kernel build process (kern.mk and kmod.mk)
22# They have to be listed here so we can build modules outside of the
23# src tree.
24
25__DEFAULT_YES_OPTIONS = \
26    AUTOFS \
27    BHYVE \
28    BLUETOOTH \
29    CCD \
30    CDDL \
31    CRYPT \
32    CUSE \
33    FORMAT_EXTENSIONS \
34    INET \
35    INET6 \
36    IPFILTER \
37    ISCSI \
38    KERNEL_SYMBOLS \
39    NETGRAPH \
40    PF \
41    SOURCELESS_HOST \
42    SOURCELESS_UCODE \
43    USB_GADGET_EXAMPLES \
44    ZFS
45
46__DEFAULT_NO_OPTIONS = \
47    EISA \
48    FAST_DEPEND \
49    NAND \
50    OFED
51
52# Enable FAST_DEPEND by default for the meta build.
53.if !empty(.MAKE.MODE:Unormal:Mmeta)
54__DEFAULT_YES_OPTIONS+=	FAST_DEPEND
55__DEFAULT_NO_OPTIONS:=	${__DEFAULT_NO_OPTIONS:NFAST_DEPEND}
56.endif
57
58# Some options are totally broken on some architectures. We disable
59# them. If you need to enable them on an experimental basis, you
60# must change this code.
61# Note: These only apply to the list of modules we build by default
62# and sometimes what is in the opt_*.h files by default.
63# Kernel config files are unaffected, though some targets can be
64# affected by KERNEL_SYMBOLS, FORMAT_EXTENSIONS, CTF and SSP.
65
66# Things that don't work based on the CPU
67.if ${MACHINE_CPUARCH} == "arm"
68BROKEN_OPTIONS+= ZFS
69. if ${MACHINE_ARCH:Marmv6*} == ""
70BROKEN_OPTIONS+= CDDL
71. endif
72.endif
73
74.if ${MACHINE_CPUARCH} == "mips"
75BROKEN_OPTIONS+= CDDL ZFS
76.endif
77
78.if ${MACHINE_CPUARCH} == "powerpc" && ${MACHINE_ARCH} == "powerpc"
79BROKEN_OPTIONS+= ZFS
80.endif
81
82# Things that don't work because the kernel doesn't have the support
83# for them.
84.if ${MACHINE} != "i386"
85BROKEN_OPTIONS+= EISA
86.endif
87
88.if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
89BROKEN_OPTIONS+= OFED
90.endif
91
92# expanded inline from bsd.mkopt.mk to avoid share/mk dependency
93
94# Those that default to yes
95.for var in ${__DEFAULT_YES_OPTIONS}
96.if !defined(MK_${var})
97.if defined(WITHOUT_${var})			# WITHOUT always wins
98MK_${var}:=	no
99.else
100MK_${var}:=	yes
101.endif
102.else
103.if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
104.error "Illegal value for MK_${var}: ${MK_${var}}"
105.endif
106.endif # !defined(MK_${var})
107.endfor
108.undef __DEFAULT_YES_OPTIONS
109
110# Those that default to no
111.for var in ${__DEFAULT_NO_OPTIONS}
112.if !defined(MK_${var})
113.if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
114MK_${var}:=	yes
115.else
116MK_${var}:=	no
117.endif
118.else
119.if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
120.error "Illegal value for MK_${var}: ${MK_${var}}"
121.endif
122.endif # !defined(MK_${var})
123.endfor
124.undef __DEFAULT_NO_OPTIONS
125
126#
127# MK_* options which are always no, usually because they are
128# unsupported/badly broken on this architecture.
129#
130.for var in ${BROKEN_OPTIONS}
131MK_${var}:=	no
132.endfor
133.undef BROKEN_OPTIONS
134#end of bsd.mkopt.mk expanded inline.
135
136#
137# MK_*_SUPPORT options which default to "yes" unless their corresponding
138# MK_* variable is set to "no".
139#
140.for var in \
141    INET \
142    INET6
143.if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
144MK_${var}_SUPPORT:= no
145.else
146.if defined(KERNBUILDDIR)	# See if there's an opt_foo.h
147.if !defined(OPT_${var})
148OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo
149.export OPT_${var}
150.endif
151.if ${OPT_${var}} == ""		# nothing -> no
152MK_${var}_SUPPORT:= no
153.else
154MK_${var}_SUPPORT:= yes
155.endif
156.else				# otherwise, yes
157MK_${var}_SUPPORT:= yes
158.endif
159.endif
160.endfor
161