sys/conf/kern.opts.mk

   1
   2 # Options set in the build system which affect the building of kernel
   3 # modules. These select which parts to compile in or out (eg INET) or which
   4 # parts to omit (eg CDDL or SOURCELESS_HOST). Some of these will cause
   5 # config.mk to define symbols in various opt_*.h files.
   6
   7 #
   8 # Define MK_* variables (which are either "yes" or "no") for users
   9 # to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
  10 # make(1) environment.
  11 # These should be tested with `== "no"' or `!= "no"' in makefiles.
  12 # The NO_* variables should only be set by makefiles for variables
  13 # that haven't been converted over.
  14 #
  15
  16 # Note: bsd.own.mk must be included before the rest of kern.opts.mk to make
  17 # building on 10.x and earlier work. This should be removed when that's no
  18 # longer supported since it confounds the defaults (since it uses the host's
  19 # notion of defaults rather than what's default in current when building
  20 # within sys/modules).
  21 .include <bsd.own.mk>
  22
  23 # These options are used by the kernel build process (kern.mk and kmod.mk)
  24 # They have to be listed here so we can build modules outside of the
  25 # src tree.
  26
  27 KLDXREF_CMD?=   kldxref
  28
  29 __DEFAULT_YES_OPTIONS = \
  30     AUTOFS \
  31     BHYVE \
  32     BLUETOOTH \
  33     CCD \
  34     CDDL \
  35     CRYPT \
  36     CUSE \
  37     DTRACE \
  38     EFI \
  39     FORMAT_EXTENSIONS \
  40     INET \
  41     INET6 \
  42     IPFILTER \
  43     IPSEC_SUPPORT \
  44     ISCSI \
  45     KERNEL_SYMBOLS \
  46     NETGRAPH \
  47     OFED \
  48     PF \
  49     SCTP_SUPPORT \
  50     SOURCELESS_HOST \
  51     SOURCELESS_UCODE \
  52     SPLIT_KERNEL_DEBUG \
  53     TESTS \
  54     USB_GADGET_EXAMPLES \
  55     ZFS
  56
  57 __DEFAULT_NO_OPTIONS = \
  58     BHYVE_SNAPSHOT \
  59     KERNEL_BIN \
  60     KERNEL_RETPOLINE \
  61     RATELIMIT \
  62     REPRODUCIBLE_BUILD \
  63     VERIEXEC
  64
  65 # Some options are totally broken on some architectures. We disable them. If you
  66 # need to enable them on an experimental basis, you must change this code.
  67 # Note: These only apply to the list of modules we build by default and
  68 # sometimes what is in the opt_*.h files by default.  Kernel config files are
  69 # unaffected, though some targets can be affected by KERNEL_BIN, KERNEL_SYMBOLS,
  70 # FORMAT_EXTENSIONS, CTF and SSP.
  71
  72 # Broken on 32-bit arm, kernel module compile errors
  73 .if ${MACHINE_CPUARCH} == "arm"
  74 BROKEN_OPTIONS+= OFED
  75 .endif
  76
  77 # Things that don't work based on toolchain support.
  78 .if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
  79 BROKEN_OPTIONS+= KERNEL_RETPOLINE
  80 .endif
  81
  82 # EFI doesn't exist on powerpc or riscv and is broken on i386
  83 .if ${MACHINE:Mpowerpc} || ${MACHINE:Mriscv} || ${MACHINE} == "i386"
  84 BROKEN_OPTIONS+=EFI
  85 .endif
  86
  87 # We only generate kernel.bin on arm and arm64, otherwise they break the build.
  88 .if ${MACHINE} != "arm" && ${MACHINE} != "arm64"
  89 BROKEN_OPTIONS+=KERNEL_BIN
  90 .endif
  91
  92 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
  93 __DEFAULT_NO_OPTIONS += FDT
  94 .else
  95 __DEFAULT_YES_OPTIONS += FDT
  96 .endif
  97
  98 __SINGLE_OPTIONS = \
  99         INIT_ALL
 100
 101 __INIT_ALL_OPTIONS=     none pattern zero
 102 __INIT_ALL_DEFAULT=     none
 103 .if ${MACHINE} == "amd64"
 104 # PR251083 conflict between INIT_ALL_ZERO and ifunc memset
 105 BROKEN_SINGLE_OPTIONS+= INIT_ALL zero none
 106 .endif
 107
 108 # expanded inline from bsd.mkopt.mk to avoid share/mk dependency
 109
 110 # Those that default to yes
 111 .for var in ${__DEFAULT_YES_OPTIONS}
 112 .if !defined(MK_${var})
 113 .if defined(WITHOUT_${var})                     # WITHOUT always wins
 114 MK_${var}:=     no
 115 .else
 116 MK_${var}:=     yes
 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_YES_OPTIONS
 125
 126 # Those that default to no
 127 .for var in ${__DEFAULT_NO_OPTIONS}
 128 .if !defined(MK_${var})
 129 .if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
 130 MK_${var}:=     yes
 131 .else
 132 MK_${var}:=     no
 133 .endif
 134 .else
 135 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
 136 .error "Illegal value for MK_${var}: ${MK_${var}}"
 137 .endif
 138 .endif # !defined(MK_${var})
 139 .endfor
 140 .undef __DEFAULT_NO_OPTIONS
 141
 142 #
 143 # MK_* options which are always no, usually because they are
 144 # unsupported/badly broken on this architecture.
 145 #
 146 .for var in ${BROKEN_OPTIONS}
 147 MK_${var}:=     no
 148 .endfor
 149 .undef BROKEN_OPTIONS
 150
 151 #
 152 # Group options set an OPT_FOO variable for each option.
 153 #
 154 .for opt in ${__SINGLE_OPTIONS}
 155 .if !defined(__${opt}_OPTIONS) || empty(__${opt}_OPTIONS)
 156 .error __${opt}_OPTIONS not defined or empty
 157 .endif
 158 .if !defined(__${opt}_DEFAULT) || empty(__${opt}_DEFAULT)
 159 .error __${opt}_DEFAULT undefined or empty
 160 .endif
 161 .if defined(${opt})
 162 OPT_${opt}:=    ${${opt}}
 163 .else
 164 OPT_${opt}:=    ${__${opt}_DEFAULT}
 165 .endif
 166 .if empty(OPT_${opt}) || ${__${opt}_OPTIONS:M${OPT_${opt}}} != ${OPT_${opt}}
 167 .error Invalid option OPT_${opt} (${OPT_${opt}}), must be one of: ${__${opt}_OPTIONS}
 168 .endif
 169 .endfor
 170 .undef __SINGLE_OPTIONS
 171
 172 .for opt val rep in ${BROKEN_SINGLE_OPTIONS}
 173 .if ${OPT_${opt}} == ${val}
 174 OPT_${opt}:=    ${rep}
 175 .endif
 176 .endfor
 177 #end of bsd.mkopt.mk expanded inline.
 178
 179 #
 180 # MK_*_SUPPORT options which default to "yes" unless their corresponding
 181 # MK_* variable is set to "no".
 182 #
 183 .for var in \
 184     INET \
 185     INET6
 186 .if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
 187 MK_${var}_SUPPORT:= no
 188 .else
 189 .if defined(KERNBUILDDIR)       # See if there's an opt_foo.h
 190 .if !defined(OPT_${var})
 191 OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo
 192 .export OPT_${var}
 193 .endif
 194 .if ${OPT_${var}} == ""         # nothing -> no
 195 MK_${var}_SUPPORT:= no
 196 .else
 197 MK_${var}_SUPPORT:= yes
 198 .endif
 199 .else                           # otherwise, yes
 200 MK_${var}_SUPPORT:= yes
 201 .endif
 202 .endif
 203 .endfor
 204
 205 .if ${MK_SPLIT_KERNEL_DEBUG} == "no"
 206 MK_KERNEL_SYMBOLS:=     no
 207 .endif
 208
 209 .if ${MK_CDDL} == "no"
 210 MK_DTRACE:=     no
 211 .endif
 212
 213 # Some modules only compile successfully if option FDT is set, due to #ifdef FDT
 214 # wrapped around declarations.  Module makefiles can optionally compile such
 215 # things using .if !empty(OPT_FDT)
 216 .if !defined(OPT_FDT) && defined(KERNBUILDDIR)
 217 OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h
 218 .export OPT_FDT
 219 .if empty(OPT_FDT)
 220 MK_FDT:=no
 221 .else
 222 MK_FDT:=yes
 223 .endif
 224 .endif