3 # Options set in the build system that affect the kernel somehow.
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
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.
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).
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
25 __DEFAULT_YES_OPTIONS = \
48 __DEFAULT_NO_OPTIONS = \
55 # Some options are totally broken on some architectures. We disable
56 # them. If you need to enable them on an experimental basis, you
57 # must change this code.
58 # Note: These only apply to the list of modules we build by default
59 # and sometimes what is in the opt_*.h files by default.
60 # Kernel config files are unaffected, though some targets can be
61 # affected by KERNEL_SYMBOLS, FORMAT_EXTENSIONS, CTF and SSP.
63 # Things that don't work based on the CPU
64 .if ${MACHINE_CPUARCH} == "arm"
65 . if ${MACHINE_ARCH:Marmv[67]*} == ""
66 BROKEN_OPTIONS+= CDDL ZFS
70 .if ${MACHINE_CPUARCH} == "mips"
71 BROKEN_OPTIONS+= CDDL ZFS SSP
74 .if ${MACHINE_CPUARCH} == "powerpc" && ${MACHINE_ARCH} == "powerpc"
78 .if ${MACHINE_CPUARCH} == "riscv"
79 BROKEN_OPTIONS+= FORMAT_EXTENSIONS
82 # Things that don't work because the kernel doesn't have the support
84 .if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
88 # expanded inline from bsd.mkopt.mk to avoid share/mk dependency
90 # Those that default to yes
91 .for var in ${__DEFAULT_YES_OPTIONS}
92 .if !defined(MK_${var})
93 .if defined(WITHOUT_${var}) # WITHOUT always wins
99 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
100 .error "Illegal value for MK_${var}: ${MK_${var}}"
102 .endif # !defined(MK_${var})
104 .undef __DEFAULT_YES_OPTIONS
106 # Those that default to no
107 .for var in ${__DEFAULT_NO_OPTIONS}
108 .if !defined(MK_${var})
109 .if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
115 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
116 .error "Illegal value for MK_${var}: ${MK_${var}}"
118 .endif # !defined(MK_${var})
120 .undef __DEFAULT_NO_OPTIONS
123 # MK_* options which are always no, usually because they are
124 # unsupported/badly broken on this architecture.
126 .for var in ${BROKEN_OPTIONS}
129 .undef BROKEN_OPTIONS
130 #end of bsd.mkopt.mk expanded inline.
133 # MK_*_SUPPORT options which default to "yes" unless their corresponding
134 # MK_* variable is set to "no".
139 .if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
140 MK_${var}_SUPPORT:= no
142 .if defined(KERNBUILDDIR) # See if there's an opt_foo.h
143 .if !defined(OPT_${var})
144 OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo
147 .if ${OPT_${var}} == "" # nothing -> no
148 MK_${var}_SUPPORT:= no
150 MK_${var}_SUPPORT:= yes
152 .else # otherwise, yes
153 MK_${var}_SUPPORT:= yes
158 # Some modules only compile successfully if option FDT is set, due to #ifdef FDT
159 # wrapped around declarations. Module makefiles can optionally compile such
160 # things using .if !empty(OPT_FDT)
161 .if !defined(OPT_FDT) && defined(KERNBUILDDIR)
162 OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h