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