6e69a58077
any defaults or user specified actions on the command line. This would be useful for specifying features that are always broken or that cannot make sense on a specific architecture, like ACPI on pc98 or EISA on !i386 (!x86 usage of EISA is broken and there's no supported hardware that could have it in any event). Any items in __ALWAYS_NO_OPTIONS are forced to "no" regardless of other settings. Differential Revision: https://reviews.freebsd.org/D2011
154 lines
3.6 KiB
Makefile
154 lines
3.6 KiB
Makefile
# $FreeBSD$
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# Options set in the build system that affect the kernel somehow.
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#
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# Define MK_* variables (which are either "yes" or "no") for users
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# to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
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# make(1) environment.
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# These should be tested with `== "no"' or `!= "no"' in makefiles.
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# The NO_* variables should only be set by makefiles for variables
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# that haven't been converted over.
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#
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# Note: bsd.own.mk must be included before the rest of kern.opts.mk to make
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# building on 10.x and earlier work. This should be removed when that's no
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# longer supported since it confounds the defaults (since it uses the host's
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# notion of defaults rather than what's default in current when building
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# within sys/modules).
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.include <bsd.own.mk>
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# These options are used by the kernel build process (kern.mk and kmod.mk)
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# They have to be listed here so we can build modules outside of the
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# src tree.
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__DEFAULT_YES_OPTIONS = \
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AUTOFS \
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BHYVE \
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BLUETOOTH \
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CCD \
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CDDL \
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CRYPT \
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CUSE \
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FORMAT_EXTENSIONS \
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INET \
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INET6 \
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IPFILTER \
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ISCSI \
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KERNEL_SYMBOLS \
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NETGRAPH \
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PF \
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SOURCELESS_HOST \
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SOURCELESS_UCODE \
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USB_GADGET_EXAMPLES \
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ZFS
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__DEFAULT_NO_OPTIONS = \
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EISA \
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NAND \
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OFED
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# Some options are totally broken on some architectures. We disable
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# them. If you need to enable them on an experimental basis, you
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# must change this code.
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# Things that don't work based on the CPU
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.if ${MACHINE_CPUARCH} == "arm"
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BROKEN_OPTIONS+= CDDL ZFS
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.endif
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.if ${MACHINE_CPUARCH} == "mips"
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BROKEN_OPTIONS+= CDDL ZFS
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.endif
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.if ${MACHINE_CPUARCH} == "powerpc" && ${MACHINE_ARCH} == "powerpc"
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BROKEN_OPTIONS+= ZFS
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.endif
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# Things that don't work because the kernel doesn't have the support
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# for them.
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.if ${MACHINE} != "i386"
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BROKEN_OPTIONS+= EISA
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.endif
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.if ${MACHINE} != "i386" && ${MACHINE} != "amd64"
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BROKEN_OPTIONS+= OFED
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.endif
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# expanded inline from bsd.mkopt.mk to avoid share/mk dependency
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# Those that default to yes
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.for var in ${__DEFAULT_YES_OPTIONS}
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.if !defined(MK_${var})
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.if defined(WITHOUT_${var}) # WITHOUT always wins
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MK_${var}:= no
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.else
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MK_${var}:= yes
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.endif
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.else
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.if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
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.error "Illegal value for MK_${var}: ${MK_${var}}"
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.endif
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.endif # !defined(MK_${var})
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.endfor
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.undef __DEFAULT_YES_OPTIONS
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# Those that default to no
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.for var in ${__DEFAULT_NO_OPTIONS}
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.if !defined(MK_${var})
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.if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
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MK_${var}:= yes
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.else
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MK_${var}:= no
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.endif
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.else
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.if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
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.error "Illegal value for MK_${var}: ${MK_${var}}"
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.endif
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.endif # !defined(MK_${var})
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.endfor
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.undef __DEFAULT_NO_OPTIONS
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#
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# MK_* options which are always no, usually because they are
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# unsupported/badly broken on this architecture.
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#
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.for var in ${BROKEN_OPTIONS}
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MK_${var}:= no
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.endfor
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.undef BROKEN_OPTIONS
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#end of bsd.mkopt.mk expanded inline.
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#
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# MK_* options which are always no, usually because they are
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# unsupported/badly broken on this architecture.
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#
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.for var in ${__ALWAYS_NO_OPTIONS}
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MK_${var}:= no
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.endfor
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.undef __ALWAYS_NO_OPTIONS
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#end of bsd.mkopt.mk expanded inline.
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#
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# MK_*_SUPPORT options which default to "yes" unless their corresponding
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# MK_* variable is set to "no".
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#
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.for var in \
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INET \
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INET6
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.if defined(WITHOUT_${var}_SUPPORT) || ${MK_${var}} == "no"
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MK_${var}_SUPPORT:= no
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.else
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.if defined(KERNBUILDDIR) # See if there's an opt_foo.h
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OPT_${var}!= cat ${KERNBUILDDIR}/opt_${var:tl}.h; echo
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.if ${OPT_${var}} == "" # nothing -> no
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MK_${var}_SUPPORT:= no
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.else
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MK_${var}_SUPPORT:= yes
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.endif
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.else # otherwise, yes
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MK_${var}_SUPPORT:= yes
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.endif
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.endif
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.endfor
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