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 27KLDXREF_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 EXTRA_TCP_STACKS \ 60 KERNEL_RETPOLINE \ 61 RATELIMIT \ 62 REPRODUCIBLE_BUILD \ 63 VERIEXEC 64 65# Some options are totally broken on some architectures. We disable 66# them. If you need to enable them on an experimental basis, you 67# must change this code. 68# Note: These only apply to the list of modules we build by default 69# and sometimes what is in the opt_*.h files by default. 70# Kernel config files are unaffected, though some targets can be 71# affected by KERNEL_SYMBOLS, FORMAT_EXTENSIONS, CTF and SSP. 72 73# Broken on 32-bit arm, kernel module compile errors 74.if ${MACHINE_CPUARCH} == "arm" 75BROKEN_OPTIONS+= OFED 76.endif 77 78# Things that don't work based on toolchain support. 79.if ${MACHINE} != "i386" && ${MACHINE} != "amd64" 80BROKEN_OPTIONS+= KERNEL_RETPOLINE 81.endif 82 83# EFI doesn't exist on powerpc or riscv and is broken on i386 84.if ${MACHINE:Mpowerpc} || ${MACHINE:Mriscv} || ${MACHINE} == "i386" 85BROKEN_OPTIONS+=EFI 86.endif 87 88.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64" 89__DEFAULT_NO_OPTIONS += FDT 90.else 91__DEFAULT_YES_OPTIONS += FDT 92.endif 93 94__SINGLE_OPTIONS = \ 95 INIT_ALL 96 97__INIT_ALL_OPTIONS= none pattern zero 98__INIT_ALL_DEFAULT= none 99.if ${MACHINE} == "amd64" 100# PR251083 conflict between INIT_ALL_ZERO and ifunc memset 101BROKEN_SINGLE_OPTIONS+= INIT_ALL zero none 102.endif 103 104# expanded inline from bsd.mkopt.mk to avoid share/mk dependency 105 106# Those that default to yes 107.for var in ${__DEFAULT_YES_OPTIONS} 108.if !defined(MK_${var}) 109.if defined(WITHOUT_${var}) # WITHOUT always wins 110MK_${var}:= no 111.else 112MK_${var}:= yes 113.endif 114.else 115.if ${MK_${var}} != "yes" && ${MK_${var}} != "no" 116.error "Illegal value for MK_${var}: ${MK_${var}}" 117.endif 118.endif # !defined(MK_${var}) 119.endfor 120.undef __DEFAULT_YES_OPTIONS 121 122# Those that default to no 123.for var in ${__DEFAULT_NO_OPTIONS} 124.if !defined(MK_${var}) 125.if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins 126MK_${var}:= yes 127.else 128MK_${var}:= no 129.endif 130.else 131.if ${MK_${var}} != "yes" && ${MK_${var}} != "no" 132.error "Illegal value for MK_${var}: ${MK_${var}}" 133.endif 134.endif # !defined(MK_${var}) 135.endfor 136.undef __DEFAULT_NO_OPTIONS 137 138# 139# MK_* options which are always no, usually because they are 140# unsupported/badly broken on this architecture. 141# 142.for var in ${BROKEN_OPTIONS} 143MK_${var}:= no 144.endfor 145.undef BROKEN_OPTIONS 146 147# 148# Group options set an OPT_FOO variable for each option. 149# 150.for opt in ${__SINGLE_OPTIONS} 151.if !defined(__${opt}_OPTIONS) || empty(__${opt}_OPTIONS) 152.error __${opt}_OPTIONS not defined or empty 153.endif 154.if !defined(__${opt}_DEFAULT) || empty(__${opt}_DEFAULT) 155.error __${opt}_DEFAULT undefined or empty 156.endif 157.if defined(${opt}) 158OPT_${opt}:= ${${opt}} 159.else 160OPT_${opt}:= ${__${opt}_DEFAULT} 161.endif 162.if empty(OPT_${opt}) || ${__${opt}_OPTIONS:M${OPT_${opt}}} != ${OPT_${opt}} 163.error Invalid option OPT_${opt} (${OPT_${opt}}), must be one of: ${__${opt}_OPTIONS} 164.endif 165.endfor 166.undef __SINGLE_OPTIONS 167 168.for opt val rep in ${BROKEN_SINGLE_OPTIONS} 169.if ${OPT_${opt}} == ${val} 170OPT_${opt}:= ${rep} 171.endif 172.endfor 173#end of bsd.mkopt.mk expanded inline. 174 175# 176# MK_*_SUPPORT options which default to "yes" unless their corresponding 177# MK_* variable is set to "no". 178# 179.for var in \ 180 INET \ 181 INET6 182.if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no" 183MK_${var}_SUPPORT:= no 184.else 185.if defined(KERNBUILDDIR) # See if there's an opt_foo.h 186.if !defined(OPT_${var}) 187OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo 188.export OPT_${var} 189.endif 190.if ${OPT_${var}} == "" # nothing -> no 191MK_${var}_SUPPORT:= no 192.else 193MK_${var}_SUPPORT:= yes 194.endif 195.else # otherwise, yes 196MK_${var}_SUPPORT:= yes 197.endif 198.endif 199.endfor 200 201.if ${MK_SPLIT_KERNEL_DEBUG} == "no" 202MK_KERNEL_SYMBOLS:= no 203.endif 204 205.if ${MK_CDDL} == "no" 206MK_DTRACE:= no 207.endif 208 209# Some modules only compile successfully if option FDT is set, due to #ifdef FDT 210# wrapped around declarations. Module makefiles can optionally compile such 211# things using .if !empty(OPT_FDT) 212.if !defined(OPT_FDT) && defined(KERNBUILDDIR) 213OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h 214.export OPT_FDT 215.if empty(OPT_FDT) 216MK_FDT:=no 217.else 218MK_FDT:=yes 219.endif 220.endif 221