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 INIT_ALL_PATTERN \ 61 INIT_ALL_ZERO \ 62 KERNEL_RETPOLINE \ 63 RATELIMIT \ 64 REPRODUCIBLE_BUILD \ 65 VERIEXEC 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 78BROKEN_OPTIONS+= INIT_ALL_ZERO 79.endif 80 81# Broken on 32-bit arm, kernel module compile errors 82.if ${MACHINE_CPUARCH} == "arm" 83BROKEN_OPTIONS+= OFED 84.endif 85 86# Things that don't work based on toolchain support. 87.if ${MACHINE} != "i386" && ${MACHINE} != "amd64" 88BROKEN_OPTIONS+= KERNEL_RETPOLINE 89.endif 90 91# EFI doesn't exist on powerpc or riscv and is broken on i386 92.if ${MACHINE:Mpowerpc} || ${MACHINE:Mriscv} || ${MACHINE} == "i386" 93BROKEN_OPTIONS+=EFI 94.endif 95 96.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64" 97__DEFAULT_NO_OPTIONS += FDT 98.else 99__DEFAULT_YES_OPTIONS += FDT 100.endif 101 102# expanded inline from bsd.mkopt.mk to avoid share/mk dependency 103 104# Those that default to yes 105.for var in ${__DEFAULT_YES_OPTIONS} 106.if !defined(MK_${var}) 107.if defined(WITHOUT_${var}) # WITHOUT always wins 108MK_${var}:= no 109.else 110MK_${var}:= yes 111.endif 112.else 113.if ${MK_${var}} != "yes" && ${MK_${var}} != "no" 114.error "Illegal value for MK_${var}: ${MK_${var}}" 115.endif 116.endif # !defined(MK_${var}) 117.endfor 118.undef __DEFAULT_YES_OPTIONS 119 120# Those that default to no 121.for var in ${__DEFAULT_NO_OPTIONS} 122.if !defined(MK_${var}) 123.if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins 124MK_${var}:= yes 125.else 126MK_${var}:= no 127.endif 128.else 129.if ${MK_${var}} != "yes" && ${MK_${var}} != "no" 130.error "Illegal value for MK_${var}: ${MK_${var}}" 131.endif 132.endif # !defined(MK_${var}) 133.endfor 134.undef __DEFAULT_NO_OPTIONS 135 136# 137# MK_* options which are always no, usually because they are 138# unsupported/badly broken on this architecture. 139# 140.for var in ${BROKEN_OPTIONS} 141MK_${var}:= no 142.endfor 143.undef BROKEN_OPTIONS 144#end of bsd.mkopt.mk expanded inline. 145 146# 147# MK_*_SUPPORT options which default to "yes" unless their corresponding 148# MK_* variable is set to "no". 149# 150.for var in \ 151 INET \ 152 INET6 153.if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no" 154MK_${var}_SUPPORT:= no 155.else 156.if defined(KERNBUILDDIR) # See if there's an opt_foo.h 157.if !defined(OPT_${var}) 158OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo 159.export OPT_${var} 160.endif 161.if ${OPT_${var}} == "" # nothing -> no 162MK_${var}_SUPPORT:= no 163.else 164MK_${var}_SUPPORT:= yes 165.endif 166.else # otherwise, yes 167MK_${var}_SUPPORT:= yes 168.endif 169.endif 170.endfor 171 172.if ${MK_SPLIT_KERNEL_DEBUG} == "no" 173MK_KERNEL_SYMBOLS:= no 174.endif 175 176.if ${MK_CDDL} == "no" 177MK_DTRACE:= no 178.endif 179 180# Some modules only compile successfully if option FDT is set, due to #ifdef FDT 181# wrapped around declarations. Module makefiles can optionally compile such 182# things using .if !empty(OPT_FDT) 183.if !defined(OPT_FDT) && defined(KERNBUILDDIR) 184OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h 185.export OPT_FDT 186.if empty(OPT_FDT) 187MK_FDT:=no 188.else 189MK_FDT:=yes 190.endif 191.endif 192