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