1# $FreeBSD$ 2 3# Options set in the build system that affect the kernel somehow. 4 5# 6# Define MK_* variables (which are either "yes" or "no") for users 7# to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the 8# make(1) environment. 9# These should be tested with `== "no"' or `!= "no"' in makefiles. 10# The NO_* variables should only be set by makefiles for variables 11# that haven't been converted over. 12# 13 14# Note: bsd.own.mk must be included before the rest of kern.opts.mk to make 15# building on 10.x and earlier work. This should be removed when that's no 16# longer supported since it confounds the defaults (since it uses the host's 17# notion of defaults rather than what's default in current when building 18# within sys/modules). 19.include <bsd.own.mk> 20 21# These options are used by the kernel build process (kern.mk and kmod.mk) 22# They have to be listed here so we can build modules outside of the 23# src tree. 24 25KLDXREF_CMD?= kldxref 26 27__DEFAULT_YES_OPTIONS = \ 28 AUTOFS \ 29 BHYVE \ 30 BLUETOOTH \ 31 CCD \ 32 CDDL \ 33 CRYPT \ 34 CUSE \ 35 EFI \ 36 FORMAT_EXTENSIONS \ 37 INET \ 38 INET6 \ 39 IPFILTER \ 40 IPSEC_SUPPORT \ 41 ISCSI \ 42 KERNEL_SYMBOLS \ 43 NETGRAPH \ 44 OFED \ 45 PF \ 46 SCTP_SUPPORT \ 47 SOURCELESS_HOST \ 48 SOURCELESS_UCODE \ 49 TESTS \ 50 USB_GADGET_EXAMPLES \ 51 ZFS 52 53__DEFAULT_NO_OPTIONS = \ 54 BHYVE_SNAPSHOT \ 55 EXTRA_TCP_STACKS \ 56 INIT_ALL_PATTERN \ 57 INIT_ALL_ZERO \ 58 KERNEL_RETPOLINE \ 59 RATELIMIT \ 60 REPRODUCIBLE_BUILD 61 62# Some options are totally broken on some architectures. We disable 63# them. If you need to enable them on an experimental basis, you 64# must change this code. 65# Note: These only apply to the list of modules we build by default 66# and sometimes what is in the opt_*.h files by default. 67# Kernel config files are unaffected, though some targets can be 68# affected by KERNEL_SYMBOLS, FORMAT_EXTENSIONS, CTF and SSP. 69 70# Things that don't work based on the CPU 71.if ${MACHINE} == "amd64" 72# PR251083 conflict between INIT_ALL_ZERO and ifunc memset 73BROKEN_OPTIONS+= INIT_ALL_ZERO 74.endif 75 76.if ${MACHINE_CPUARCH} == "arm" 77. if ${MACHINE_ARCH:Marmv[67]*} == "" 78BROKEN_OPTIONS+= CDDL ZFS 79. endif 80.endif 81 82.if ${MACHINE_CPUARCH} == "powerpc" && ${MACHINE_ARCH} == "powerpc" 83BROKEN_OPTIONS+= ZFS 84.endif 85 86# Things that don't work because the kernel doesn't have the support 87# for them. 88.if ${MACHINE} != "i386" && ${MACHINE} != "amd64" 89BROKEN_OPTIONS+= OFED 90.endif 91 92# Things that don't work based on toolchain support. 93.if ${MACHINE} != "i386" && ${MACHINE} != "amd64" 94BROKEN_OPTIONS+= KERNEL_RETPOLINE 95.endif 96 97# EFI doesn't exist on powerpc, or riscv 98.if ${MACHINE:Mpowerpc} || ${MACHINE:Mriscv} 99BROKEN_OPTIONS+=EFI 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# Some modules only compile successfully if option FDT is set, due to #ifdef FDT 173# wrapped around declarations. Module makefiles can optionally compile such 174# things using .if !empty(OPT_FDT) 175.if !defined(OPT_FDT) && defined(KERNBUILDDIR) 176OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h 177.export OPT_FDT 178.endif 179