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 = \
47 __DEFAULT_NO_OPTIONS = \
54 # Some options are totally broken on some architectures. We disable
55 # them. If you need to enable them on an experimental basis, you
56 # must change this code.
57 # Note: These only apply to the list of modules we build by default
58 # and sometimes what is in the opt_*.h files by default.
59 # Kernel config files are unaffected, though some targets can be
60 # affected by KERNEL_SYMBOLS, FORMAT_EXTENSIONS, CTF and SSP.
62 # Things that don't work based on the CPU
63 .if ${MACHINE_CPUARCH} == "arm"
64 . if ${MACHINE_ARCH:Marmv6*} == ""
65 BROKEN_OPTIONS+= CDDL ZFS
69 .if ${MACHINE_CPUARCH} == "mips"
70 BROKEN_OPTIONS+= CDDL ZFS SSP
73 .if ${MACHINE_CPUARCH} == "powerpc" && ${MACHINE_ARCH} == "powerpc"
77 # Things that don't work because the kernel doesn't have the support
79 .if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
83 # expanded inline from bsd.mkopt.mk to avoid share/mk dependency
85 # Those that default to yes
86 .for var in ${__DEFAULT_YES_OPTIONS}
87 .if !defined(MK_${var})
88 .if defined(WITHOUT_${var}) # WITHOUT always wins
94 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
95 .error "Illegal value for MK_${var}: ${MK_${var}}"
97 .endif # !defined(MK_${var})
99 .undef __DEFAULT_YES_OPTIONS
101 # Those that default to no
102 .for var in ${__DEFAULT_NO_OPTIONS}
103 .if !defined(MK_${var})
104 .if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
110 .if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
111 .error "Illegal value for MK_${var}: ${MK_${var}}"
113 .endif # !defined(MK_${var})
115 .undef __DEFAULT_NO_OPTIONS
118 # MK_* options which are always no, usually because they are
119 # unsupported/badly broken on this architecture.
121 .for var in ${BROKEN_OPTIONS}
124 .undef BROKEN_OPTIONS
125 #end of bsd.mkopt.mk expanded inline.
128 # MK_*_SUPPORT options which default to "yes" unless their corresponding
129 # MK_* variable is set to "no".
134 .if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
135 MK_${var}_SUPPORT:= no
137 .if defined(KERNBUILDDIR) # See if there's an opt_foo.h
138 .if !defined(OPT_${var})
139 OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo
142 .if ${OPT_${var}} == "" # nothing -> no
143 MK_${var}_SUPPORT:= no
145 MK_${var}_SUPPORT:= yes
147 .else # otherwise, yes
148 MK_${var}_SUPPORT:= yes
153 # Some modules only compile successfully if option FDT is set, due to #ifdef FDT
154 # wrapped around declarations. Module makefiles can optionally compile such
155 # things using .if !empty(OPT_FDT)
156 .if !defined(OPT_FDT) && defined(KERNBUILDDIR)
157 OPT_FDT!= sed -n '/FDT/p' ${KERNBUILDDIR}/opt_platform.h