FreeBSD/Linux Kernel Cross Reference
sys/conf/kern.opts.mk
1 # $FreeBSD$
2
3 # Options set in the build system which affect the building of kernel
4 # modules. These select which parts to compile in or out (eg INET) or which
5 # parts to omit (eg CDDL or SOURCELESS_HOST). Some of these will cause
6 # config.mk to define symbols in various opt_*.h files.
7
8 #
9 # Define MK_* variables (which are either "yes" or "no") for users
10 # to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
11 # make(1) environment.
12 # These should be tested with `== "no"' or `!= "no"' in makefiles.
13 # The NO_* variables should only be set by makefiles for variables
14 # that haven't been converted over.
15 #
16
17 # Note: bsd.own.mk must be included before the rest of kern.opts.mk to make
18 # building on 10.x and earlier work. This should be removed when that's no
19 # longer supported since it confounds the defaults (since it uses the host's
20 # notion of defaults rather than what's default in current when building
21 # within sys/modules).
22 .include <bsd.own.mk>
23
24 # These options are used by the kernel build process (kern.mk and kmod.mk)
25 # They have to be listed here so we can build modules outside of the
26 # src tree.
27
28 KLDXREF_CMD?= kldxref
29
30 __DEFAULT_YES_OPTIONS = \
31 AUTOFS \
32 BHYVE \
33 BLUETOOTH \
34 CCD \
35 CDDL \
36 CRYPT \
37 CUSE \
38 DTRACE \
39 EFI \
40 FORMAT_EXTENSIONS \
41 INET \
42 INET6 \
43 IPFILTER \
44 IPSEC_SUPPORT \
45 ISCSI \
46 KERNEL_SYMBOLS \
47 NETGRAPH \
48 OFED \
49 PF \
50 SCTP_SUPPORT \
51 SOURCELESS_HOST \
52 SOURCELESS_UCODE \
53 SPLIT_KERNEL_DEBUG \
54 TESTS \
55 USB_GADGET_EXAMPLES \
56 ZFS
57
58 __DEFAULT_NO_OPTIONS = \
59 BHYVE_SNAPSHOT \
60 EXTRA_TCP_STACKS \
61 INIT_ALL_PATTERN \
62 INIT_ALL_ZERO \
63 KERNEL_RETPOLINE \
64 RATELIMIT \
65 REPRODUCIBLE_BUILD
66
67 # Some options are totally broken on some architectures. We disable
68 # them. If you need to enable them on an experimental basis, you
69 # must change this code.
70 # Note: These only apply to the list of modules we build by default
71 # and sometimes what is in the opt_*.h files by default.
72 # Kernel config files are unaffected, though some targets can be
73 # affected by KERNEL_SYMBOLS, FORMAT_EXTENSIONS, CTF and SSP.
74
75 # Things that don't work based on the CPU
76 .if ${MACHINE} == "amd64"
77 # PR251083 conflict between INIT_ALL_ZERO and ifunc memset
78 BROKEN_OPTIONS+= INIT_ALL_ZERO
79 .endif
80
81 .if ${MACHINE_CPUARCH} == "arm"
82 . if ${MACHINE_ARCH:Marmv[67]*} == ""
83 BROKEN_OPTIONS+= CDDL ZFS
84 . endif
85 .endif
86
87 .if ${MACHINE_CPUARCH} == "powerpc" && ${MACHINE_ARCH} == "powerpc"
88 BROKEN_OPTIONS+= ZFS
89 .endif
90
91 # Things that don't work because the kernel doesn't have the support
92 # for them.
93 .if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
94 BROKEN_OPTIONS+= OFED
95 .endif
96
97 # Things that don't work based on toolchain support.
98 .if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
99 BROKEN_OPTIONS+= KERNEL_RETPOLINE
100 .endif
101
102 # EFI doesn't exist on powerpc, or riscv
103 .if ${MACHINE:Mpowerpc} || ${MACHINE:Mriscv}
104 BROKEN_OPTIONS+=EFI
105 .endif
106
107 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
108 __DEFAULT_NO_OPTIONS += FDT
109 .else
110 __DEFAULT_YES_OPTIONS += FDT
111 .endif
112
113 # expanded inline from bsd.mkopt.mk to avoid share/mk dependency
114
115 # Those that default to yes
116 .for var in ${__DEFAULT_YES_OPTIONS}
117 .if !defined(MK_${var})
118 .if defined(WITHOUT_${var}) # WITHOUT always wins
119 MK_${var}:= no
120 .else
121 MK_${var}:= yes
122 .endif
123 .else
124 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
125 .error "Illegal value for MK_${var}: ${MK_${var}}"
126 .endif
127 .endif # !defined(MK_${var})
128 .endfor
129 .undef __DEFAULT_YES_OPTIONS
130
131 # Those that default to no
132 .for var in ${__DEFAULT_NO_OPTIONS}
133 .if !defined(MK_${var})
134 .if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
135 MK_${var}:= yes
136 .else
137 MK_${var}:= no
138 .endif
139 .else
140 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
141 .error "Illegal value for MK_${var}: ${MK_${var}}"
142 .endif
143 .endif # !defined(MK_${var})
144 .endfor
145 .undef __DEFAULT_NO_OPTIONS
146
147 #
148 # MK_* options which are always no, usually because they are
149 # unsupported/badly broken on this architecture.
150 #
151 .for var in ${BROKEN_OPTIONS}
152 MK_${var}:= no
153 .endfor
154 .undef BROKEN_OPTIONS
155 #end of bsd.mkopt.mk expanded inline.
156
157 #
158 # MK_*_SUPPORT options which default to "yes" unless their corresponding
159 # MK_* variable is set to "no".
160 #
161 .for var in \
162 INET \
163 INET6
164 .if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
165 MK_${var}_SUPPORT:= no
166 .else
167 .if defined(KERNBUILDDIR) # See if there's an opt_foo.h
168 .if !defined(OPT_${var})
169 OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo
170 .export OPT_${var}
171 .endif
172 .if ${OPT_${var}} == "" # nothing -> no
173 MK_${var}_SUPPORT:= no
174 .else
175 MK_${var}_SUPPORT:= yes
176 .endif
177 .else # otherwise, yes
178 MK_${var}_SUPPORT:= yes
179 .endif
180 .endif
181 .endfor
182
183 .if ${MK_SPLIT_KERNEL_DEBUG} == "no"
184 MK_KERNEL_SYMBOLS:= no
185 .endif
186
187 .if ${MK_CDDL} == "no"
188 MK_DTRACE:= no
189 .endif
190
191 # Some modules only compile successfully if option FDT is set, due to #ifdef FDT
192 # wrapped around declarations. Module makefiles can optionally compile such
193 # things using .if !empty(OPT_FDT)
194 .if !defined(OPT_FDT) && defined(KERNBUILDDIR)
195 OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h
196 .export OPT_FDT
197 .if empty(OPT_FDT)
198 MK_FDT:=no
199 .else
200 MK_FDT:=yes
201 .endif
202 .endif
Cache object: 94289470e40e6a700d5e53e6ca9c777f
|