diff --git a/share/mk/bsd.lib.mk b/share/mk/bsd.lib.mk
index 684a3df108fa..5cd5663e1ca7 100644
--- a/share/mk/bsd.lib.mk
+++ b/share/mk/bsd.lib.mk
@@ -1,595 +1,597 @@
 #	from: @(#)bsd.lib.mk	5.26 (Berkeley) 5/2/91
 # $FreeBSD$
 #
 
 .include <bsd.init.mk>
 .include <bsd.compiler.mk>
 .include <bsd.linker.mk>
 
 .if defined(LIB_CXX) || defined(SHLIB_CXX)
 _LD=	${CXX}
 .else
 _LD=	${CC}
 .endif
 .if defined(LIB_CXX)
 LIB=	${LIB_CXX}
 .endif
 .if defined(SHLIB_CXX)
 SHLIB=	${SHLIB_CXX}
 .endif
 
 LIB_PRIVATE=	${PRIVATELIB:Dprivate}
 # Set up the variables controlling shared libraries.  After this section,
 # SHLIB_NAME will be defined only if we are to create a shared library.
 # SHLIB_LINK will be defined only if we are to create a link to it.
 # INSTALL_PIC_ARCHIVE will be defined only if we are to create a PIC archive.
 # BUILD_NOSSP_PIC_ARCHIVE will be defined only if we are to create a PIC archive.
 .if defined(NO_PIC)
 .undef SHLIB_NAME
 .undef INSTALL_PIC_ARCHIVE
 .undef BUILD_NOSSP_PIC_ARCHIVE
 .else
 .if !defined(SHLIB) && defined(LIB)
 SHLIB=		${LIB}
 .endif
 .if !defined(SHLIB_NAME) && defined(SHLIB) && defined(SHLIB_MAJOR)
 SHLIB_NAME=	lib${LIB_PRIVATE}${SHLIB}.so.${SHLIB_MAJOR}
 .endif
 .if defined(SHLIB_NAME) && !empty(SHLIB_NAME:M*.so.*)
 SHLIB_LINK?=	${SHLIB_NAME:R}
 .endif
 SONAME?=	${SHLIB_NAME}
 .endif
 
 .if defined(CRUNCH_CFLAGS)
 CFLAGS+=	${CRUNCH_CFLAGS}
 .endif
 
 .if ${MK_ASSERT_DEBUG} == "no"
 CFLAGS+= -DNDEBUG
 # XXX: shouldn't we ensure that !asserts marks potentially unused variables as
 # __unused instead of disabling -Werror globally?
 MK_WERROR=	no
 .endif
 
 .if defined(DEBUG_FLAGS)
 CFLAGS+= ${DEBUG_FLAGS}
 
 .if ${MK_CTF} != "no" && ${DEBUG_FLAGS:M-g} != ""
 CTFFLAGS+= -g
 .endif
 .else
 STRIP?=	-s
 .endif
 
 .if ${SHLIBDIR:M*lib32*}
 TAGS+=	lib32
 .endif
 
 .if defined(NO_ROOT)
 .if !defined(TAGS) || ! ${TAGS:Mpackage=*}
 TAGS+=		package=${PACKAGE:Uutilities}
 .endif
 TAG_ARGS=	-T ${TAGS:[*]:S/ /,/g}
 .endif
 
 # ELF hardening knobs
 .if ${MK_BIND_NOW} != "no"
 LDFLAGS+= -Wl,-znow
 .endif
 .if ${MK_RELRO} == "no"
 LDFLAGS+= -Wl,-znorelro
 .else
 LDFLAGS+= -Wl,-zrelro
 .endif
 .if ${MK_RETPOLINE} != "no"
 .if ${COMPILER_FEATURES:Mretpoline} && ${LINKER_FEATURES:Mretpoline}
 CFLAGS+= -mretpoline
 CXXFLAGS+= -mretpoline
 LDFLAGS+= -Wl,-zretpolineplt
 .else
 .warning Retpoline requested but not supported by compiler or linker
 .endif
 .endif
 
 # Initialize stack variables on function entry
 .if ${MK_INIT_ALL_ZERO} == "yes"
 .if ${COMPILER_FEATURES:Minit-all}
-CFLAGS+= -ftrivial-auto-var-init=zero \
-    -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
-CXXFLAGS+= -ftrivial-auto-var-init=zero \
-    -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+CFLAGS+= -ftrivial-auto-var-init=zero
+CXXFLAGS+= -ftrivial-auto-var-init=zero
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 160000
+CFLAGS+= -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+CXXFLAGS+= -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+.endif
 .else
-.warning InitAll (zeros) requested but not support by compiler
+.warning InitAll (zeros) requested but not supported by compiler
 .endif
 .elif ${MK_INIT_ALL_PATTERN} == "yes"
 .if ${COMPILER_FEATURES:Minit-all}
 CFLAGS+= -ftrivial-auto-var-init=pattern
 CXXFLAGS+= -ftrivial-auto-var-init=pattern
 .else
-.warning InitAll (pattern) requested but not support by compiler
+.warning InitAll (pattern) requested but not supported by compiler
 .endif
 .endif
 
 .if ${MK_DEBUG_FILES} != "no" && empty(DEBUG_FLAGS:M-g) && \
     empty(DEBUG_FLAGS:M-gdwarf*)
 CFLAGS+= ${DEBUG_FILES_CFLAGS}
 CXXFLAGS+= ${DEBUG_FILES_CFLAGS}
 CTFFLAGS+= -g
 .endif
 
 # clang currently defaults to dynamic TLS for mips64 object files without -fPIC
 .if ${MACHINE_ARCH:Mmips64*} && ${COMPILER_TYPE} == "clang"
 STATIC_CFLAGS+= -ftls-model=initial-exec
 STATIC_CXXFLAGS+= -ftls-model=initial-exec
 .endif
 
 .if ${MACHINE_CPUARCH} == "riscv" && ${LINKER_FEATURES:Mriscv-relaxations} == ""
 CFLAGS += -mno-relax
 .endif
 
 .include <bsd.libnames.mk>
 
 # prefer .s to a .c, add .po, remove stuff not used in the BSD libraries
 # .pico used for PIC object files
 # .nossppico used for NOSSP PIC object files
 # .pieo used for PIE object files
 .SUFFIXES: .out .o .bc .ll .po .pico .nossppico .pieo .S .asm .s .c .cc .cpp .cxx .C .f .y .l .ln
 
 .if !defined(PICFLAG)
 PICFLAG=-fpic
 PIEFLAG=-fpie
 .endif
 
 PO_FLAG=-pg
 
 .c.po:
 	${CC} ${PO_FLAG} ${STATIC_CFLAGS} ${PO_CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .c.pico:
 	${CC} ${PICFLAG} -DPIC ${SHARED_CFLAGS} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .c.nossppico:
 	${CC} ${PICFLAG} -DPIC ${SHARED_CFLAGS:C/^-fstack-protector.*$//} ${CFLAGS:C/^-fstack-protector.*$//} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .c.pieo:
 	${CC} ${PIEFLAG} -DPIC ${SHARED_CFLAGS} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .cc.po .C.po .cpp.po .cxx.po:
 	${CXX} ${PO_FLAG} ${STATIC_CXXFLAGS} ${PO_CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .cc.pico .C.pico .cpp.pico .cxx.pico:
 	${CXX} ${PICFLAG} -DPIC ${SHARED_CXXFLAGS} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .cc.nossppico .C.nossppico .cpp.nossppico .cxx.nossppico:
 	${CXX} ${PICFLAG} -DPIC ${SHARED_CXXFLAGS:C/^-fstack-protector.*$//} ${CXXFLAGS:C/^-fstack-protector.*$//} -c ${.IMPSRC} -o ${.TARGET}
 
 .cc.pieo .C.pieo .cpp.pieo .cxx.pieo:
 	${CXX} ${PIEFLAG} ${SHARED_CXXFLAGS} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 
 .f.po:
 	${FC} -pg ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC}
 	${CTFCONVERT_CMD}
 
 .f.pico:
 	${FC} ${PICFLAG} -DPIC ${FFLAGS} -o ${.TARGET} -c ${.IMPSRC}
 	${CTFCONVERT_CMD}
 
 .f.nossppico:
 	${FC} ${PICFLAG} -DPIC ${FFLAGS:C/^-fstack-protector.*$//} -o ${.TARGET} -c ${.IMPSRC}
 	${CTFCONVERT_CMD}
 
 .s.po .s.pico .s.nossppico .s.pieo:
 	${AS} ${AFLAGS} -o ${.TARGET} ${.IMPSRC}
 	${CTFCONVERT_CMD}
 
 .asm.po:
 	${CC:N${CCACHE_BIN}} -x assembler-with-cpp -DPROF ${PO_CFLAGS} \
 	    ${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .asm.pico:
 	${CC:N${CCACHE_BIN}} -x assembler-with-cpp ${PICFLAG} -DPIC \
 	    ${CFLAGS} ${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .asm.nossppico:
 	${CC:N${CCACHE_BIN}} -x assembler-with-cpp ${PICFLAG} -DPIC \
 	    ${CFLAGS:C/^-fstack-protector.*$//} ${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .asm.pieo:
 	${CC:N${CCACHE_BIN}} -x assembler-with-cpp ${PIEFLAG} -DPIC \
 	    ${CFLAGS} ${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .S.po:
 	${CC:N${CCACHE_BIN}} -DPROF ${PO_CFLAGS} ${ACFLAGS} -c ${.IMPSRC} \
 	    -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .S.pico:
 	${CC:N${CCACHE_BIN}} ${PICFLAG} -DPIC ${CFLAGS} ${ACFLAGS} \
 	    -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .S.nossppico:
 	${CC:N${CCACHE_BIN}} ${PICFLAG} -DPIC ${CFLAGS:C/^-fstack-protector.*$//} ${ACFLAGS} \
 	    -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 .S.pieo:
 	${CC:N${CCACHE_BIN}} ${PIEFLAG} -DPIC ${CFLAGS} ${ACFLAGS} \
 	    -c ${.IMPSRC} -o ${.TARGET}
 	${CTFCONVERT_CMD}
 
 _LIBDIR:=${LIBDIR}
 _SHLIBDIR:=${SHLIBDIR}
 
 .if defined(SHLIB_NAME)
 .if ${MK_DEBUG_FILES} != "no"
 SHLIB_NAME_FULL=${SHLIB_NAME}.full
 # Use ${DEBUGDIR} for base system debug files, else .debug subdirectory
 .if ${_SHLIBDIR} == "/boot" ||\
     ${SHLIBDIR:C%/lib(/.*)?$%/lib%} == "/lib" ||\
     ${SHLIBDIR:C%/usr/(tests/)?lib(32|exec)?(/.*)?%/usr/lib%} == "/usr/lib"
 DEBUGFILEDIR=${DEBUGDIR}${_SHLIBDIR}
 .else
 DEBUGFILEDIR=${_SHLIBDIR}/.debug
 .endif
 .if !exists(${DESTDIR}${DEBUGFILEDIR})
 DEBUGMKDIR=
 .endif
 .else
 SHLIB_NAME_FULL=${SHLIB_NAME}
 .endif
 .endif
 
 .include <bsd.symver.mk>
 
 # Allow libraries to specify their own version map or have it
 # automatically generated (see bsd.symver.mk above).
 .if !empty(VERSION_MAP)
 ${SHLIB_NAME_FULL}:	${VERSION_MAP}
 LDFLAGS+=	-Wl,--version-script=${VERSION_MAP}
 
 # lld >= 16 turned on --no-undefined-version by default, but we have several
 # symbols in our version maps that may or may not exist, depending on
 # compile-time defines.
 .if ${LINKER_TYPE} == "lld" && ${LINKER_VERSION} >= 160000
 LDFLAGS+=	-Wl,--undefined-version
 .endif
 .endif
 
 .if defined(LIB) && !empty(LIB) || defined(SHLIB_NAME)
 OBJS+=		${SRCS:N*.h:${OBJS_SRCS_FILTER:ts:}:S/$/.o/}
 BCOBJS+=	${SRCS:N*.[hsS]:N*.asm:${OBJS_SRCS_FILTER:ts:}:S/$/.bco/g}
 LLOBJS+=	${SRCS:N*.[hsS]:N*.asm:${OBJS_SRCS_FILTER:ts:}:S/$/.llo/g}
 CLEANFILES+=	${OBJS} ${BCOBJS} ${LLOBJS} ${STATICOBJS}
 .endif
 
 .if defined(LIB) && !empty(LIB)
 _LIBS=		lib${LIB_PRIVATE}${LIB}.a
 
 lib${LIB_PRIVATE}${LIB}.a: ${OBJS} ${STATICOBJS}
 	@${ECHO} building static ${LIB} library
 	@rm -f ${.TARGET}
 	${AR} ${ARFLAGS} ${.TARGET} ${OBJS} ${STATICOBJS} ${ARADD}
 .endif
 
 .if !defined(INTERNALLIB)
 
 .if ${MK_PROFILE} != "no" && defined(LIB) && !empty(LIB)
 _LIBS+=		lib${LIB_PRIVATE}${LIB}_p.a
 POBJS+=		${OBJS:.o=.po} ${STATICOBJS:.o=.po}
 DEPENDOBJS+=	${POBJS}
 CLEANFILES+=	${POBJS}
 
 lib${LIB_PRIVATE}${LIB}_p.a: ${POBJS}
 	@${ECHO} building profiled ${LIB} library
 	@rm -f ${.TARGET}
 	${AR} ${ARFLAGS} ${.TARGET} ${POBJS} ${ARADD}
 .endif
 
 .if defined(LLVM_LINK)
 lib${LIB_PRIVATE}${LIB}.bc: ${BCOBJS}
 	${LLVM_LINK} -o ${.TARGET} ${BCOBJS}
 
 lib${LIB_PRIVATE}${LIB}.ll: ${LLOBJS}
 	${LLVM_LINK} -S -o ${.TARGET} ${LLOBJS}
 
 CLEANFILES+=	lib${LIB_PRIVATE}${LIB}.bc lib${LIB_PRIVATE}${LIB}.ll
 .endif
 
 .if defined(SHLIB_NAME) || \
     defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB)
 SOBJS+=		${OBJS:.o=.pico}
 DEPENDOBJS+=	${SOBJS}
 CLEANFILES+=	${SOBJS}
 .endif
 
 .if defined(SHLIB_NAME)
 _LIBS+=		${SHLIB_NAME}
 
 SOLINKOPTS+=	-shared -Wl,-x
 .if defined(LD_FATAL_WARNINGS) && ${LD_FATAL_WARNINGS} == "no"
 SOLINKOPTS+=	-Wl,--no-fatal-warnings
 .else
 SOLINKOPTS+=	-Wl,--fatal-warnings
 .endif
 SOLINKOPTS+=	-Wl,--warn-shared-textrel
 
 .if target(beforelinking)
 beforelinking: ${SOBJS}
 ${SHLIB_NAME_FULL}: beforelinking
 .endif
 
 .if defined(SHLIB_LINK)
 .if defined(SHLIB_LDSCRIPT) && !empty(SHLIB_LDSCRIPT) && exists(${.CURDIR}/${SHLIB_LDSCRIPT})
 ${SHLIB_LINK:R}.ld: ${.CURDIR}/${SHLIB_LDSCRIPT}
 	sed -e 's,@@SHLIB@@,${_SHLIBDIR}/${SHLIB_NAME},g' \
 	    -e 's,@@LIBDIR@@,${_LIBDIR},g' \
 	    ${.ALLSRC} > ${.TARGET}
 
 ${SHLIB_NAME_FULL}: ${SHLIB_LINK:R}.ld
 CLEANFILES+=	${SHLIB_LINK:R}.ld
 .endif
 CLEANFILES+=	${SHLIB_LINK}
 .endif
 
 ${SHLIB_NAME_FULL}: ${SOBJS}
 	@${ECHO} building shared library ${SHLIB_NAME}
 	@rm -f ${SHLIB_NAME} ${SHLIB_LINK}
 .if defined(SHLIB_LINK) && !commands(${SHLIB_LINK:R}.ld) && ${MK_DEBUG_FILES} == "no"
 	# Note: This uses ln instead of ${INSTALL_LIBSYMLINK} since we are in OBJDIR
 	@${LN:Uln} -fs ${SHLIB_NAME} ${SHLIB_LINK}
 .endif
 	${_LD:N${CCACHE_BIN}} ${LDFLAGS} ${SSP_CFLAGS} ${SOLINKOPTS} \
 	    -o ${.TARGET} -Wl,-soname,${SONAME} ${SOBJS} ${LDADD}
 .if ${MK_CTF} != "no"
 	${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${SOBJS}
 .endif
 
 .if ${MK_DEBUG_FILES} != "no"
 CLEANFILES+=	${SHLIB_NAME_FULL} ${SHLIB_NAME}.debug
 ${SHLIB_NAME}: ${SHLIB_NAME_FULL} ${SHLIB_NAME}.debug
 	${OBJCOPY} --strip-debug --add-gnu-debuglink=${SHLIB_NAME}.debug \
 	    ${SHLIB_NAME_FULL} ${.TARGET}
 .if defined(SHLIB_LINK) && !commands(${SHLIB_LINK:R}.ld)
 	# Note: This uses ln instead of ${INSTALL_LIBSYMLINK} since we are in OBJDIR
 	@${LN:Uln} -fs ${SHLIB_NAME} ${SHLIB_LINK}
 .endif
 
 ${SHLIB_NAME}.debug: ${SHLIB_NAME_FULL}
 	${OBJCOPY} --only-keep-debug ${SHLIB_NAME_FULL} ${.TARGET}
 .endif
 .endif #defined(SHLIB_NAME)
 
 .if defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB) && ${MK_TOOLCHAIN} != "no"
 _LIBS+=		lib${LIB_PRIVATE}${LIB}_pic.a
 
 lib${LIB_PRIVATE}${LIB}_pic.a: ${SOBJS}
 	@${ECHO} building special pic ${LIB} library
 	@rm -f ${.TARGET}
 	${AR} ${ARFLAGS} ${.TARGET} ${SOBJS} ${ARADD}
 .endif
 
 .if defined(BUILD_NOSSP_PIC_ARCHIVE) && defined(LIB) && !empty(LIB)
 NOSSPSOBJS+=	${OBJS:.o=.nossppico}
 DEPENDOBJS+=	${NOSSPSOBJS}
 CLEANFILES+=	${NOSSPSOBJS}
 _LIBS+=		lib${LIB_PRIVATE}${LIB}_nossp_pic.a
 
 lib${LIB_PRIVATE}${LIB}_nossp_pic.a: ${NOSSPSOBJS}
 	@${ECHO} building special nossp pic ${LIB} library
 	@rm -f ${.TARGET}
 	${AR} ${ARFLAGS} ${.TARGET} ${NOSSPSOBJS} ${ARADD}
 .endif
 
 .endif # !defined(INTERNALLIB)
 
 .if defined(INTERNALLIB) && ${MK_PIE} != "no" && defined(LIB) && !empty(LIB)
 PIEOBJS+=	${OBJS:.o=.pieo}
 DEPENDOBJS+=	${PIEOBJS}
 CLEANFILES+=	${PIEOBJS}
 
 _LIBS+=		lib${LIB_PRIVATE}${LIB}_pie.a
 
 lib${LIB_PRIVATE}${LIB}_pie.a: ${PIEOBJS}
 	@${ECHO} building pie ${LIB} library
 	@rm -f ${.TARGET}
 	${AR} ${ARFLAGS} ${.TARGET} ${PIEOBJS} ${ARADD}
 .endif
 
 .if defined(_SKIP_BUILD)
 all:
 .else
 .if defined(_LIBS) && !empty(_LIBS)
 all: ${_LIBS}
 .endif
 
 .if ${MK_MAN} != "no" && !defined(LIBRARIES_ONLY)
 all: all-man
 .endif
 .endif
 
 CLEANFILES+=	${_LIBS}
 
 _EXTRADEPEND:
 .if !defined(NO_EXTRADEPEND) && defined(SHLIB_NAME)
 .if defined(DPADD) && !empty(DPADD)
 	echo ${SHLIB_NAME_FULL}: ${DPADD} >> ${DEPENDFILE}
 .endif
 .endif
 
 .if !target(install)
 
 .if defined(PRECIOUSLIB)
 .if !defined(NO_FSCHG)
 SHLINSTALLFLAGS+= -fschg
 .endif
 .endif
 # Install libraries with -S to avoid risk of modifying in-use libraries when
 # installing to a running system.  It is safe to avoid this for NO_ROOT builds
 # that are only creating an image.
 #
 # XXX: Since Makefile.inc1 ends up building lib/libc both as part of
 # _startup_libs and as part of _generic_libs it ends up getting installed a
 # second time during the parallel build, and although the .WAIT in lib/Makefile
 # stops that mattering for lib, other directories like secure/lib are built in
 # parallel at the top level and are unaffected by that, so can sometimes race
 # with the libc.so.7 reinstall and see a missing or corrupt file. Ideally the
 # build system would be fixed to not build/install libc to WORLDTMP the second
 # time round, but for now using -S ensures the install is atomic and thus we
 # never see a broken intermediate state, so use it even for NO_ROOT builds.
 .if !defined(NO_SAFE_LIBINSTALL) #&& !defined(NO_ROOT)
 SHLINSTALLFLAGS+= -S
 SHLINSTALLSYMLINKFLAGS+= -S
 .endif
 
 _INSTALLFLAGS:=	${INSTALLFLAGS}
 .for ie in ${INSTALLFLAGS_EDIT}
 _INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
 .endfor
 _SHLINSTALLFLAGS:=	${SHLINSTALLFLAGS}
 _SHLINSTALLSYMLINKFLAGS:= ${SHLINSTALLSYMLINKFLAGS}
 .for ie in ${INSTALLFLAGS_EDIT}
 _SHLINSTALLFLAGS:=	${_SHLINSTALLFLAGS${ie}}
 .endfor
 
 .if defined(PCFILES)
 .for pcfile in ${PCFILES}
 installpcfiles: installpcfiles-${pcfile}
 
 installpcfiles-${pcfile}: ${pcfile}
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} \
 	    ${.ALLSRC} ${DESTDIR}${LIBDATADIR}/pkgconfig
 .endfor
 .endif
 installpcfiles: .PHONY
 
 .if !defined(INTERNALLIB)
 realinstall: _libinstall installpcfiles
 .ORDER: beforeinstall _libinstall
 _libinstall:
 .if defined(LIB) && !empty(LIB) && ${MK_INSTALLLIB} != "no"
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} lib${LIB_PRIVATE}${LIB}.a ${DESTDIR}${_LIBDIR}/
 .if ${MK_PROFILE} != "no"
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} lib${LIB_PRIVATE}${LIB}_p.a ${DESTDIR}${_LIBDIR}/
 .endif
 .endif
 .if defined(SHLIB_NAME)
 	${INSTALL} ${TAG_ARGS} ${STRIP} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} ${_SHLINSTALLFLAGS} \
 	    ${SHLIB_NAME} ${DESTDIR}${_SHLIBDIR}/
 .if ${MK_DEBUG_FILES} != "no"
 .if defined(DEBUGMKDIR)
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -d ${DESTDIR}${DEBUGFILEDIR}/
 .endif
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -o ${LIBOWN} -g ${LIBGRP} -m ${DEBUGMODE} \
 	    ${_INSTALLFLAGS} \
 	    ${SHLIB_NAME}.debug ${DESTDIR}${DEBUGFILEDIR}/
 .endif
 .if defined(SHLIB_LINK)
 .if commands(${SHLIB_LINK:R}.ld)
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -S -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} ${SHLIB_LINK:R}.ld \
 	    ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .for _SHLIB_LINK_LINK in ${SHLIB_LDSCRIPT_LINKS}
 	${INSTALL_LIBSYMLINK} ${_SHLINSTALLSYMLINKFLAGS} ${TAG_ARGS} ${SHLIB_LINK} \
 	    ${DESTDIR}${_LIBDIR}/${_SHLIB_LINK_LINK}
 .endfor
 .else
 .if ${_SHLIBDIR} == ${_LIBDIR}
 .if ${SHLIB_LINK:Mlib*}
 	${INSTALL_RSYMLINK} ${_SHLINSTALLSYMLINKFLAGS} ${TAG_ARGS:D${TAG_ARGS},dev} \
 	    ${SHLIB_NAME} ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .else
 	${INSTALL_RSYMLINK} ${_SHLINSTALLSYMLINKFLAGS} ${TAG_ARGS} ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} \
 	    ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .endif
 .else
 .if ${SHLIB_LINK:Mlib*}
 	${INSTALL_RSYMLINK} ${_SHLINSTALLSYMLINKFLAGS} ${TAG_ARGS:D${TAG_ARGS},dev} \
 	    ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .else
 	${INSTALL_RSYMLINK} ${_SHLINSTALLSYMLINKFLAGS} ${TAG_ARGS} \
 	    ${DESTDIR}${_SHLIBDIR}/${SHLIB_NAME} ${DESTDIR}${_LIBDIR}/${SHLIB_LINK}
 .endif
 .if exists(${DESTDIR}${_LIBDIR}/${SHLIB_NAME})
 	-chflags noschg ${DESTDIR}${_LIBDIR}/${SHLIB_NAME}
 	rm -f ${DESTDIR}${_LIBDIR}/${SHLIB_NAME}
 .endif
 .endif # _SHLIBDIR == _LIBDIR
 .endif # SHLIB_LDSCRIPT
 .endif # SHLIB_LINK
 .endif # SHIB_NAME
 .if defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB) && ${MK_TOOLCHAIN} != "no"
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dev} -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
 	    ${_INSTALLFLAGS} lib${LIB}_pic.a ${DESTDIR}${_LIBDIR}/
 .endif
 .endif # !defined(INTERNALLIB)
 
 .if !defined(LIBRARIES_ONLY)
 .include <bsd.nls.mk>
 .include <bsd.confs.mk>
 .include <bsd.files.mk>
 #No need to install header for INTERNALLIB
 .if !defined(INTERNALLIB)
 .include <bsd.incs.mk>
 .endif
 .endif
 
 LINKOWN?=	${LIBOWN}
 LINKGRP?=	${LIBGRP}
 LINKMODE?=	${LIBMODE}
 SYMLINKOWN?=	${LIBOWN}
 SYMLINKGRP?=	${LIBGRP}
 .include <bsd.links.mk>
 
 .if ${MK_MAN} != "no" && !defined(LIBRARIES_ONLY)
 realinstall: maninstall
 .ORDER: beforeinstall maninstall
 .endif
 
 .endif
 
 .if ${MK_MAN} != "no" && !defined(LIBRARIES_ONLY)
 .include <bsd.man.mk>
 .endif
 
 .if defined(LIB) && !empty(LIB)
 OBJS_DEPEND_GUESS+= ${SRCS:M*.h}
 .for _S in ${SRCS:N*.[hly]}
 OBJS_DEPEND_GUESS.${_S:${OBJS_SRCS_FILTER:ts:}}.po+=	${_S}
 .endfor
 .endif
 .if defined(SHLIB_NAME) || \
     defined(INSTALL_PIC_ARCHIVE) && defined(LIB) && !empty(LIB)
 .for _S in ${SRCS:N*.[hly]}
 OBJS_DEPEND_GUESS.${_S:${OBJS_SRCS_FILTER:ts:}}.pico+=	${_S}
 .endfor
 .endif
 .if defined(BUILD_NOSSP_PIC_ARCHIVE) && defined(LIB) && !empty(LIB)
 .for _S in ${SRCS:N*.[hly]}
 OBJS_DEPEND_GUESS.${_S:${OBJS_SRCS_FILTER:ts:}}.nossppico+=	${_S}
 .endfor
 .endif
 
 .if defined(HAS_TESTS)
 MAKE+=			MK_MAKE_CHECK_USE_SANDBOX=yes
 SUBDIR_TARGETS+=	check
 TESTS_LD_LIBRARY_PATH+=	${.OBJDIR}
 .endif
 
 .include <bsd.dep.mk>
 .include <bsd.clang-analyze.mk>
 .include <bsd.obj.mk>
 .include <bsd.sys.mk>
diff --git a/share/mk/bsd.prog.mk b/share/mk/bsd.prog.mk
index a55c2fd103fd..3b9b3277a241 100644
--- a/share/mk/bsd.prog.mk
+++ b/share/mk/bsd.prog.mk
@@ -1,376 +1,378 @@
 #	from: @(#)bsd.prog.mk	5.26 (Berkeley) 6/25/91
 # $FreeBSD$
 
 .include <bsd.init.mk>
 .include <bsd.compiler.mk>
 .include <bsd.linker.mk>
 
 .SUFFIXES: .out .o .bc .c .cc .cpp .cxx .C .m .y .l .ll .ln .s .S .asm
 
 # XXX The use of COPTS in modern makefiles is discouraged.
 .if defined(COPTS)
 .warning ${.CURDIR}: COPTS should be CFLAGS.
 CFLAGS+=${COPTS}
 .endif
 
 .if ${MK_ASSERT_DEBUG} == "no"
 CFLAGS+= -DNDEBUG
 # XXX: shouldn't we ensure that !asserts marks potentially unused variables as
 # __unused instead of disabling -Werror globally?
 MK_WERROR=	no
 .endif
 
 .if defined(DEBUG_FLAGS)
 CFLAGS+=${DEBUG_FLAGS}
 CXXFLAGS+=${DEBUG_FLAGS}
 
 .if ${MK_CTF} != "no" && ${DEBUG_FLAGS:M-g} != ""
 CTFFLAGS+= -g
 .endif
 .endif
 
 .if defined(PROG_CXX)
 PROG=	${PROG_CXX}
 .endif
 
 .if !empty(LDFLAGS:M-Wl,*--oformat,*) || !empty(LDFLAGS:M-static)
 MK_DEBUG_FILES=	no
 .endif
 
 # ELF hardening knobs
 .if ${MK_BIND_NOW} != "no"
 LDFLAGS+= -Wl,-znow
 .endif
 .if ${MK_RELRO} == "no"
 LDFLAGS+= -Wl,-znorelro
 .else
 LDFLAGS+= -Wl,-zrelro
 .endif
 .if ${MK_PIE} != "no"
 # Static PIE is not yet supported/tested.
 .if !defined(NO_SHARED) || ${NO_SHARED:tl} == "no"
 CFLAGS+= -fPIE
 CXXFLAGS+= -fPIE
 LDFLAGS+= -pie
 .endif
 .endif
 .if ${MK_RETPOLINE} != "no"
 .if ${COMPILER_FEATURES:Mretpoline} && ${LINKER_FEATURES:Mretpoline}
 CFLAGS+= -mretpoline
 CXXFLAGS+= -mretpoline
 # retpolineplt is broken with static linking (PR 233336)
 .if !defined(NO_SHARED) || ${NO_SHARED:tl} == "no"
 LDFLAGS+= -Wl,-zretpolineplt
 .endif
 .else
 .warning Retpoline requested but not supported by compiler or linker
 .endif
 .endif
 
 # Initialize stack variables on function entry
 .if ${MK_INIT_ALL_ZERO} == "yes"
 .if ${COMPILER_FEATURES:Minit-all}
-CFLAGS+= -ftrivial-auto-var-init=zero \
-    -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
-CXXFLAGS+= -ftrivial-auto-var-init=zero \
-    -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+CFLAGS+= -ftrivial-auto-var-init=zero
+CXXFLAGS+= -ftrivial-auto-var-init=zero
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 160000
+CFLAGS+= -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+CXXFLAGS+= -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+.endif
 .else
-.warning InitAll (zeros) requested but not support by compiler
+.warning InitAll (zeros) requested but not supported by compiler
 .endif
 .elif ${MK_INIT_ALL_PATTERN} == "yes"
 .if ${COMPILER_FEATURES:Minit-all}
 CFLAGS+= -ftrivial-auto-var-init=pattern
 CXXFLAGS+= -ftrivial-auto-var-init=pattern
 .else
-.warning InitAll (pattern) requested but not support by compiler
+.warning InitAll (pattern) requested but not supported by compiler
 .endif
 .endif
 
 .if ${MACHINE_CPUARCH} == "riscv" && ${LINKER_FEATURES:Mriscv-relaxations} == ""
 CFLAGS += -mno-relax
 .endif
 
 .if defined(CRUNCH_CFLAGS)
 CFLAGS+=${CRUNCH_CFLAGS}
 .else
 .if ${MK_DEBUG_FILES} != "no" && empty(DEBUG_FLAGS:M-g) && \
     empty(DEBUG_FLAGS:M-gdwarf-*)
 CFLAGS+= ${DEBUG_FILES_CFLAGS}
 CTFFLAGS+= -g
 .endif
 .endif
 
 .if !defined(DEBUG_FLAGS)
 STRIP?=	-s
 .endif
 
 .if defined(NO_ROOT)
 .if !defined(TAGS) || ! ${TAGS:Mpackage=*}
 TAGS+=		package=${PACKAGE:Uutilities}
 .endif
 TAG_ARGS=	-T ${TAGS:[*]:S/ /,/g}
 .endif
 
 .if defined(NO_SHARED) && ${NO_SHARED:tl} != "no"
 LDFLAGS+= -static
 .endif
 
 # clang currently defaults to dynamic TLS for mips64 binaries
 .if ${MACHINE_ARCH:Mmips64*} && ${COMPILER_TYPE} == "clang"
 CFLAGS+= -ftls-model=initial-exec
 .endif
 
 .if ${MK_DEBUG_FILES} != "no"
 PROG_FULL=${PROG}.full
 # Use ${DEBUGDIR} for base system debug files, else .debug subdirectory
 .if defined(BINDIR) && (\
     ${BINDIR} == "/bin" ||\
     ${BINDIR:C%/libexec(/.*)?%/libexec%} == "/libexec" ||\
     ${BINDIR} == "/sbin" ||\
     ${BINDIR:C%/usr/(bin|bsdinstall|libexec|lpr|sendmail|sm.bin|sbin|tests)(/.*)?%/usr/bin%} == "/usr/bin" ||\
     ${BINDIR} == "/usr/lib" \
      )
 DEBUGFILEDIR=	${DEBUGDIR}${BINDIR}
 .else
 DEBUGFILEDIR?=	${BINDIR}/.debug
 .endif
 .if !exists(${DESTDIR}${DEBUGFILEDIR})
 DEBUGMKDIR=
 .endif
 .else
 PROG_FULL=	${PROG}
 .endif
 
 .if defined(PROG)
 PROGNAME?=	${PROG}
 
 .if defined(SRCS)
 
 OBJS+=  ${SRCS:N*.h:${OBJS_SRCS_FILTER:ts:}:S/$/.o/g}
 
 # LLVM bitcode / textual IR representations of the program
 BCOBJS+=${SRCS:N*.[hsS]:N*.asm:${OBJS_SRCS_FILTER:ts:}:S/$/.bco/g}
 LLOBJS+=${SRCS:N*.[hsS]:N*.asm:${OBJS_SRCS_FILTER:ts:}:S/$/.llo/g}
 
 .if target(beforelinking)
 beforelinking: ${OBJS}
 ${PROG_FULL}: beforelinking
 .endif
 ${PROG_FULL}: ${OBJS}
 .if defined(PROG_CXX)
 	${CXX:N${CCACHE_BIN}} ${CXXFLAGS:N-M*} ${LDFLAGS} -o ${.TARGET} \
 	    ${OBJS} ${LDADD}
 .else
 	${CC:N${CCACHE_BIN}} ${CFLAGS:N-M*} ${LDFLAGS} -o ${.TARGET} ${OBJS} \
 	    ${LDADD}
 .endif
 .if ${MK_CTF} != "no"
 	${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
 .endif
 
 .else	# !defined(SRCS)
 
 .if !target(${PROG})
 .if defined(PROG_CXX)
 SRCS=	${PROG}.cc
 .else
 SRCS=	${PROG}.c
 .endif
 
 # Always make an intermediate object file because:
 # - it saves time rebuilding when only the library has changed
 # - the name of the object gets put into the executable symbol table instead of
 #   the name of a variable temporary object.
 # - it's useful to keep objects around for crunching.
 OBJS+=		${PROG}.o
 BCOBJS+=	${PROG}.bc
 LLOBJS+=	${PROG}.ll
 CLEANFILES+=	${PROG}.o ${PROG}.bc ${PROG}.ll
 
 .if target(beforelinking)
 beforelinking: ${OBJS}
 ${PROG_FULL}: beforelinking
 .endif
 ${PROG_FULL}: ${OBJS}
 .if defined(PROG_CXX)
 	${CXX:N${CCACHE_BIN}} ${CXXFLAGS:N-M*} ${LDFLAGS} -o ${.TARGET} \
 	    ${OBJS} ${LDADD}
 .else
 	${CC:N${CCACHE_BIN}} ${CFLAGS:N-M*} ${LDFLAGS} -o ${.TARGET} ${OBJS} \
 	    ${LDADD}
 .endif
 .if ${MK_CTF} != "no"
 	${CTFMERGE} ${CTFFLAGS} -o ${.TARGET} ${OBJS}
 .endif
 .endif # !target(${PROG})
 
 .endif # !defined(SRCS)
 
 .if ${MK_DEBUG_FILES} != "no"
 ${PROG}: ${PROG_FULL} ${PROGNAME}.debug
 	${OBJCOPY} --strip-debug --add-gnu-debuglink=${PROGNAME}.debug \
 	    ${PROG_FULL} ${.TARGET}
 
 ${PROGNAME}.debug: ${PROG_FULL}
 	${OBJCOPY} --only-keep-debug ${PROG_FULL} ${.TARGET}
 .endif
 
 .if defined(LLVM_LINK)
 ${PROG_FULL}.bc: ${BCOBJS}
 	${LLVM_LINK} -o ${.TARGET} ${BCOBJS}
 
 ${PROG_FULL}.ll: ${LLOBJS}
 	${LLVM_LINK} -S -o ${.TARGET} ${LLOBJS}
 
 CLEANFILES+=	${PROG_FULL}.bc ${PROG_FULL}.ll
 .endif # defined(LLVM_LINK)
 
 .if	${MK_MAN} != "no" && !defined(MAN) && \
 	!defined(MAN1) && !defined(MAN2) && !defined(MAN3) && \
 	!defined(MAN4) && !defined(MAN5) && !defined(MAN6) && \
 	!defined(MAN7) && !defined(MAN8) && !defined(MAN9)
 MAN=	${PROG}.1
 MAN1=	${MAN}
 .endif
 .endif # defined(PROG)
 
 .if defined(_SKIP_BUILD)
 all:
 .else
 all: ${PROG} ${SCRIPTS}
 .if ${MK_MAN} != "no"
 all: all-man
 .endif
 .endif
 
 .if defined(PROG)
 CLEANFILES+= ${PROG} ${PROG}.bc ${PROG}.ll
 .if ${MK_DEBUG_FILES} != "no"
 CLEANFILES+= ${PROG_FULL} ${PROGNAME}.debug
 .endif
 .endif
 
 .if defined(OBJS)
 CLEANFILES+= ${OBJS} ${BCOBJS} ${LLOBJS}
 .endif
 
 .include <bsd.libnames.mk>
 
 .if defined(PROG)
 .if !defined(NO_EXTRADEPEND)
 _EXTRADEPEND:
 .if defined(LDFLAGS) && !empty(LDFLAGS:M-nostdlib)
 .if defined(DPADD) && !empty(DPADD)
 	echo ${PROG_FULL}: ${DPADD} >> ${DEPENDFILE}
 .endif
 .else
 	echo ${PROG_FULL}: ${LIBC} ${DPADD} >> ${DEPENDFILE}
 .if defined(PROG_CXX)
 	echo ${PROG_FULL}: ${LIBCPLUSPLUS} >> ${DEPENDFILE}
 .endif
 .endif
 .endif	# !defined(NO_EXTRADEPEND)
 .endif
 
 .if !target(install)
 
 .if defined(PRECIOUSPROG)
 .if !defined(NO_FSCHG)
 INSTALLFLAGS+= -fschg
 .endif
 INSTALLFLAGS+= -S
 .endif
 
 _INSTALLFLAGS:=	${INSTALLFLAGS}
 .for ie in ${INSTALLFLAGS_EDIT}
 _INSTALLFLAGS:=	${_INSTALLFLAGS${ie}}
 .endfor
 
 .if !target(realinstall) && !defined(INTERNALPROG)
 realinstall: _proginstall
 .ORDER: beforeinstall _proginstall
 _proginstall:
 .if defined(PROG)
 	${INSTALL} ${TAG_ARGS} ${STRIP} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
 	    ${_INSTALLFLAGS} ${PROG} ${DESTDIR}${BINDIR}/${PROGNAME}
 .if ${MK_DEBUG_FILES} != "no"
 .if defined(DEBUGMKDIR)
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -d ${DESTDIR}${DEBUGFILEDIR}/
 .endif
 	${INSTALL} ${TAG_ARGS:D${TAG_ARGS},dbg} -o ${BINOWN} -g ${BINGRP} -m ${DEBUGMODE} \
 	    ${PROGNAME}.debug ${DESTDIR}${DEBUGFILEDIR}/${PROGNAME}.debug
 .endif
 .endif
 .endif	# !target(realinstall)
 
 .if defined(SCRIPTS) && !empty(SCRIPTS)
 realinstall: _scriptsinstall
 .ORDER: beforeinstall _scriptsinstall
 
 SCRIPTSDIR?=	${BINDIR}
 SCRIPTSOWN?=	${BINOWN}
 SCRIPTSGRP?=	${BINGRP}
 SCRIPTSMODE?=	${BINMODE}
 
 STAGE_AS_SETS+= scripts
 stage_as.scripts: ${SCRIPTS}
 FLAGS.stage_as.scripts= -m ${SCRIPTSMODE}
 STAGE_FILES_DIR.scripts= ${STAGE_OBJTOP}
 .for script in ${SCRIPTS}
 .if defined(SCRIPTSNAME)
 SCRIPTSNAME_${script:T}?=	${SCRIPTSNAME}
 .else
 SCRIPTSNAME_${script:T}?=	${script:T:R}
 .endif
 SCRIPTSDIR_${script:T}?=	${SCRIPTSDIR}
 SCRIPTSOWN_${script:T}?=	${SCRIPTSOWN}
 SCRIPTSGRP_${script:T}?=	${SCRIPTSGRP}
 SCRIPTSMODE_${script:T}?=	${SCRIPTSMODE}
 STAGE_AS_${script:T}=		${SCRIPTSDIR_${script:T}}/${SCRIPTSNAME_${script:T}}
 _scriptsinstall: _SCRIPTSINS_${script:T}
 _SCRIPTSINS_${script:T}: ${script}
 	${INSTALL} ${TAG_ARGS} -o ${SCRIPTSOWN_${.ALLSRC:T}} \
 	    -g ${SCRIPTSGRP_${.ALLSRC:T}} -m ${SCRIPTSMODE_${.ALLSRC:T}} \
 	    ${.ALLSRC} \
 	    ${DESTDIR}${SCRIPTSDIR_${.ALLSRC:T}}/${SCRIPTSNAME_${.ALLSRC:T}}
 .endfor
 .endif
 
 NLSNAME?=	${PROG}
 .include <bsd.nls.mk>
 
 .include <bsd.confs.mk>
 .include <bsd.files.mk>
 .include <bsd.incs.mk>
 
 LINKOWN?=	${BINOWN}
 LINKGRP?=	${BINGRP}
 LINKMODE?=	${BINMODE}
 .include <bsd.links.mk>
 
 .if ${MK_MAN} != "no"
 realinstall: maninstall
 .ORDER: beforeinstall maninstall
 .endif
 
 .endif	# !target(install)
 
 .if ${MK_MAN} != "no"
 .include <bsd.man.mk>
 .endif
 
 .if defined(HAS_TESTS)
 MAKE+=			MK_MAKE_CHECK_USE_SANDBOX=yes
 SUBDIR_TARGETS+=	check
 TESTS_LD_LIBRARY_PATH+=	${.OBJDIR}
 TESTS_PATH+=		${.OBJDIR}
 .endif
 
 .if defined(PROG)
 OBJS_DEPEND_GUESS+= ${SRCS:M*.h}
 .endif
 
 .include <bsd.dep.mk>
 .include <bsd.clang-analyze.mk>
 .include <bsd.obj.mk>
 .include <bsd.sys.mk>
diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index 25c6ad8d87ac..a79cc5a5ed60 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -1,358 +1,360 @@
 # $FreeBSD$
 
 #
 # Warning flags for compiling the kernel and components of the kernel:
 #
 CWARNFLAGS?=	-Wall -Wstrict-prototypes \
 		-Wmissing-prototypes -Wpointer-arith -Wcast-qual \
 		-Wundef -Wno-pointer-sign ${FORMAT_EXTENSIONS} \
 		-Wmissing-include-dirs -fdiagnostics-show-option \
 		-Wno-unknown-pragmas \
 		${CWARNEXTRA}
 #
 # The following flags are next up for working on:
 #	-Wextra
 
 # Disable a few warnings for clang, since there are several places in the
 # kernel where fixing them is more trouble than it is worth, or where there is
 # a false positive.
 .if ${COMPILER_TYPE} == "clang"
 NO_WCONSTANT_CONVERSION=	-Wno-error=constant-conversion
 NO_WSHIFT_COUNT_NEGATIVE=	-Wno-shift-count-negative
 NO_WSHIFT_COUNT_OVERFLOW=	-Wno-shift-count-overflow
 NO_WSELF_ASSIGN=		-Wno-self-assign
 NO_WUNNEEDED_INTERNAL_DECL=	-Wno-error=unneeded-internal-declaration
 NO_WSOMETIMES_UNINITIALIZED=	-Wno-error=sometimes-uninitialized
 NO_WCAST_QUAL=			-Wno-error=cast-qual
 NO_WTAUTOLOGICAL_POINTER_COMPARE= -Wno-tautological-pointer-compare
 .if ${COMPILER_VERSION} >= 100000
 NO_WMISLEADING_INDENTATION=	-Wno-misleading-indentation
 .endif
 .if ${COMPILER_VERSION} >= 130000
 NO_WUNUSED_BUT_SET_VARIABLE=	-Wno-unused-but-set-variable
 .endif
 .if ${COMPILER_VERSION} >= 140000
 NO_WBITWISE_INSTEAD_OF_LOGICAL=	-Wno-bitwise-instead-of-logical
 .endif
 .if ${COMPILER_VERSION} >= 150000
 NO_WSTRICT_PROTOTYPES=		-Wno-strict-prototypes
 .endif
 # Several other warnings which might be useful in some cases, but not severe
 # enough to error out the whole kernel build.  Display them anyway, so there is
 # some incentive to fix them eventually.
 CWARNEXTRA?=	-Wno-error=tautological-compare -Wno-error=empty-body \
 		-Wno-error=parentheses-equality -Wno-error=unused-function \
 		-Wno-error=pointer-sign
 CWARNEXTRA+=	-Wno-error=shift-negative-value
 CWARNEXTRA+=	-Wno-address-of-packed-member
 .if ${COMPILER_VERSION} >= 130000
 CWARNFLAGS+=	-Wno-error=unused-but-set-variable
 .endif
 .if ${COMPILER_VERSION} >= 150000
 # Clang 15 has much more aggressive diagnostics about inconsistently declared
 # array parameters, K&R prototypes, mismatched prototypes, and unused-but-set
 # variables. Make these non-fatal for the time being.
 CWARNEXTRA+=	-Wno-error=array-parameter
 CWARNEXTRA+=	-Wno-error=deprecated-non-prototype
 CWARNEXTRA+=	-Wno-error=strict-prototypes
 CWARNEXTRA+=	-Wno-error=unused-but-set-variable
 NO_WDEPRECATED_NON_PROTOTYPE=-Wno-deprecated-non-prototype
 .endif
 .endif	# clang
 
 .if ${COMPILER_TYPE} == "gcc"
 # Catch-all for all the things that are in our tree, but for which we're
 # not yet ready for this compiler.
 NO_WUNUSED_BUT_SET_VARIABLE = -Wno-unused-but-set-variable
 CWARNEXTRA?=	-Wno-error=address				\
 		-Wno-error=aggressive-loop-optimizations	\
 		-Wno-error=array-bounds				\
 		-Wno-error=attributes				\
 		-Wno-error=cast-qual				\
 		-Wno-error=enum-compare				\
 		-Wno-error=maybe-uninitialized			\
 		-Wno-error=misleading-indentation		\
 		-Wno-error=nonnull-compare			\
 		-Wno-error=overflow				\
 		-Wno-error=sequence-point			\
 		-Wno-error=shift-overflow			\
 		-Wno-error=tautological-compare			\
 		-Wno-unused-but-set-variable
 .if ${COMPILER_VERSION} >= 70100
 CWARNEXTRA+=	-Wno-error=stringop-overflow
 .endif
 .if ${COMPILER_VERSION} >= 70200
 CWARNEXTRA+=	-Wno-error=memset-elt-size
 .endif
 .if ${COMPILER_VERSION} >= 80000
 CWARNEXTRA+=	-Wno-error=packed-not-aligned
 .endif
 .if ${COMPILER_VERSION} >= 90100
 CWARNEXTRA+=	-Wno-address-of-packed-member			\
 		-Wno-error=alloca-larger-than=
 .if ${COMPILER_VERSION} >= 120100
 CWARNEXTRA+=	-Wno-error=nonnull				\
 		-Wno-dangling-pointer				\
 		-Wno-zero-length-bounds
 NO_WINFINITE_RECURSION=	-Wno-infinite-recursion
 NO_WSTRINGOP_OVERREAD=	-Wno-stringop-overread
 .endif
 .endif
 
 # GCC produces false positives for functions that switch on an
 # enum (GCC bug 87950)
 CWARNFLAGS+=	-Wno-return-type
 .endif	# gcc
 
 # This warning is utter nonsense
 CWARNFLAGS+=	-Wno-format-zero-length
 
 # External compilers may not support our format extensions.  Allow them
 # to be disabled.  WARNING: format checking is disabled in this case.
 .if ${MK_FORMAT_EXTENSIONS} == "no"
 FORMAT_EXTENSIONS=	-Wno-format
 .elif ${COMPILER_TYPE} == "clang" || \
     (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 120100)
 FORMAT_EXTENSIONS=	-D__printf__=__freebsd_kprintf__
 .else
 FORMAT_EXTENSIONS=	-fformat-extensions
 .endif
 
 #
 # On i386, do not align the stack to 16-byte boundaries.  Otherwise GCC 2.95
 # and above adds code to the entry and exit point of every function to align the
 # stack to 16-byte boundaries -- thus wasting approximately 12 bytes of stack
 # per function call.  While the 16-byte alignment may benefit micro benchmarks,
 # it is probably an overall loss as it makes the code bigger (less efficient
 # use of code cache tag lines) and uses more stack (less efficient use of data
 # cache tag lines).  Explicitly prohibit the use of FPU, SSE and other SIMD
 # operations inside the kernel itself.  These operations are exclusively
 # reserved for user applications.
 #
 # gcc:
 # Setting -mno-mmx implies -mno-3dnow
 # Setting -mno-sse implies -mno-sse2, -mno-sse3 and -mno-ssse3
 #
 # clang:
 # Setting -mno-mmx implies -mno-3dnow and -mno-3dnowa
 # Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3, -mno-sse41 and -mno-sse42
 #
 .if ${MACHINE_CPUARCH} == "i386"
 CFLAGS.gcc+=	-mpreferred-stack-boundary=2
 CFLAGS.clang+=	-mno-aes -mno-avx
 CFLAGS+=	-mno-mmx -mno-sse -msoft-float
 INLINE_LIMIT?=	8000
 .endif
 
 .if ${MACHINE_CPUARCH} == "arm"
 INLINE_LIMIT?=	8000
 .endif
 
 .if ${MACHINE_CPUARCH} == "aarch64"
 # We generally don't want fpu instructions in the kernel.
 CFLAGS += -mgeneral-regs-only
 # Reserve x18 for pcpu data
 CFLAGS += -ffixed-x18
 INLINE_LIMIT?=	8000
 .endif
 
 #
 # For RISC-V we specify the soft-float ABI (lp64) to avoid the use of floating
 # point registers within the kernel. However, for kernels supporting hardware
 # float (FPE), we have to include that in the march so we can have limited
 # floating point support in context switching needed for that. This is different
 # than userland where we use a hard-float ABI (lp64d).
 #
 # We also specify the "medium" code model, which generates code suitable for a
 # 2GiB addressing range located at any offset, allowing modules to be located
 # anywhere in the 64-bit address space.  Note that clang and GCC refer to this
 # code model as "medium" and "medany" respectively.
 #
 .if ${MACHINE_CPUARCH} == "riscv"
 CFLAGS+=	-march=rv64imafdc
 CFLAGS+=	-mabi=lp64
 CFLAGS.clang+=	-mcmodel=medium
 CFLAGS.gcc+=	-mcmodel=medany
 INLINE_LIMIT?=	8000
 
 .if ${LINKER_FEATURES:Mriscv-relaxations} == ""
 CFLAGS+=	-mno-relax
 .endif
 .endif
 
 #
 # For AMD64, we explicitly prohibit the use of FPU, SSE and other SIMD
 # operations inside the kernel itself.  These operations are exclusively
 # reserved for user applications.
 #
 # gcc:
 # Setting -mno-mmx implies -mno-3dnow
 # Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3 and -mfpmath=387
 #
 # clang:
 # Setting -mno-mmx implies -mno-3dnow and -mno-3dnowa
 # Setting -mno-sse implies -mno-sse2, -mno-sse3, -mno-ssse3, -mno-sse41 and -mno-sse42
 # (-mfpmath= is not supported)
 #
 .if ${MACHINE_CPUARCH} == "amd64"
 CFLAGS.clang+=	-mno-aes -mno-avx
 CFLAGS+=	-mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -msoft-float \
 		-fno-asynchronous-unwind-tables
 INLINE_LIMIT?=	8000
 .endif
 
 #
 # For PowerPC we tell gcc to use floating point emulation.  This avoids using
 # floating point registers for integer operations which it has a tendency to do.
 # Also explicitly disable Altivec instructions inside the kernel.
 #
 .if ${MACHINE_CPUARCH} == "powerpc"
 CFLAGS+=	-mno-altivec -msoft-float
 INLINE_LIMIT?=	15000
 .endif
 
 .if ${MACHINE_ARCH} == "powerpcspe"
 CFLAGS.gcc+=	-mno-spe
 .endif
 
 #
 # Use dot symbols (or, better, the V2 ELF ABI) on powerpc64 to make
 # DDB happy. ELFv2, if available, has some other efficiency benefits.
 #
 .if ${MACHINE_ARCH:Mpowerpc64*} != "" && \
     ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 160000
 CFLAGS+=	-mabi=elfv2
 .endif
 
 #
 # For MIPS we also tell gcc to use floating point emulation
 #
 .if ${MACHINE_CPUARCH} == "mips"
 CFLAGS+=	-msoft-float
 INLINE_LIMIT?=	8000
 .endif
 
 #
 # GCC 3.0 and above like to do certain optimizations based on the
 # assumption that the program is linked against libc.  Stop this.
 #
 CFLAGS+=	-ffreestanding
 
 #
 # The C standard leaves signed integer overflow behavior undefined.
 # gcc and clang opimizers take advantage of this.  The kernel makes
 # use of signed integer wraparound mechanics so we need the compiler
 # to treat it as a wraparound and not take shortcuts.
 #
 CFLAGS+=	-fwrapv
 
 #
 # GCC SSP support
 #
 .if ${MK_SSP} != "no"
 CFLAGS+=	-fstack-protector
 .endif
 
 #
 # Retpoline speculative execution vulnerability mitigation (CVE-2017-5715)
 #
 .if defined(COMPILER_FEATURES) && ${COMPILER_FEATURES:Mretpoline} != "" && \
     ${MK_KERNEL_RETPOLINE} != "no"
 CFLAGS+=	-mretpoline
 .endif
 
 #
 # Initialize stack variables on function entry
 #
 .if ${MK_INIT_ALL_ZERO} == "yes"
 .if ${COMPILER_FEATURES:Minit-all}
-CFLAGS+= -ftrivial-auto-var-init=zero \
-    -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+CFLAGS+= -ftrivial-auto-var-init=zero
+.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} < 160000
+CFLAGS+= -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
+.endif
 .else
 .warning InitAll (zeros) requested but not support by compiler
 .endif
 .elif ${MK_INIT_ALL_PATTERN} == "yes"
 .if ${COMPILER_FEATURES:Minit-all}
 CFLAGS+= -ftrivial-auto-var-init=pattern
 .else
 .warning InitAll (pattern) requested but not support by compiler
 .endif
 .endif
 
 CFLAGS+= ${CWARNFLAGS:M*} ${CWARNFLAGS.${.IMPSRC:T}}
 CFLAGS+= ${CWARNFLAGS.${COMPILER_TYPE}}
 CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} ${CFLAGS.${.IMPSRC:T}}
 
 # Tell bmake not to mistake standard targets for things to be searched for
 # or expect to ever be up-to-date.
 PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \
 		beforelinking build build-tools buildfiles buildincludes \
 		checkdpadd clean cleandepend cleandir cleanobj configure \
 		depend distclean distribute exe \
 		html includes install installfiles installincludes \
 		obj objlink objs objwarn \
 		realinstall regress \
 		tags whereobj
 
 .PHONY: ${PHONY_NOTMAIN}
 .NOTMAIN: ${PHONY_NOTMAIN}
 
 CSTD=		c99
 
 .if ${CSTD} == "k&r"
 CFLAGS+=        -traditional
 .elif ${CSTD} == "c89" || ${CSTD} == "c90"
 CFLAGS+=        -std=iso9899:1990
 .elif ${CSTD} == "c94" || ${CSTD} == "c95"
 CFLAGS+=        -std=iso9899:199409
 .elif ${CSTD} == "c99"
 CFLAGS+=        -std=iso9899:1999
 .else # CSTD
 CFLAGS+=        -std=${CSTD}
 .endif # CSTD
 
 # Please keep this if in sync with bsd.sys.mk
 .if ${LD} != "ld" && (${CC:[1]:H} != ${LD:[1]:H} || ${LD:[1]:T} != "ld")
 # Add -fuse-ld=${LD} if $LD is in a different directory or not called "ld".
 .if ${COMPILER_TYPE} == "clang"
 # Note: Clang does not like relative paths for ld so we map ld.lld -> lld.
 .if ${COMPILER_VERSION} >= 120000
 CCLDFLAGS+=	--ld-path=${LD:[1]:S/^ld.//1W}
 .else
 CCLDFLAGS+=	-fuse-ld=${LD:[1]:S/^ld.//1W}
 .endif
 .else
 # GCC does not support an absolute path for -fuse-ld so we just print this
 # warning instead and let the user add the required symlinks.
 # However, we can avoid this warning if -B is set appropriately (e.g. for
 # CROSS_TOOLCHAIN=...-gcc).
 .if !(${LD:[1]:T} == "ld" && ${CC:tw:M-B${LD:[1]:H}/})
 .warning LD (${LD}) is not the default linker for ${CC} but -fuse-ld= is not supported
 .endif
 .endif
 .endif
 
 # Set target-specific linker emulation name.
 LD_EMULATION_aarch64=aarch64elf
 LD_EMULATION_amd64=elf_x86_64_fbsd
 LD_EMULATION_arm=armelf_fbsd
 LD_EMULATION_armv6=armelf_fbsd
 LD_EMULATION_armv7=armelf_fbsd
 LD_EMULATION_i386=elf_i386_fbsd
 LD_EMULATION_mips= elf32btsmip_fbsd
 LD_EMULATION_mipshf= elf32btsmip_fbsd
 LD_EMULATION_mips64= elf64btsmip_fbsd
 LD_EMULATION_mips64hf= elf64btsmip_fbsd
 LD_EMULATION_mipsel= elf32ltsmip_fbsd
 LD_EMULATION_mipselhf= elf32ltsmip_fbsd
 LD_EMULATION_mips64el= elf64ltsmip_fbsd
 LD_EMULATION_mips64elhf= elf64ltsmip_fbsd
 LD_EMULATION_mipsn32= elf32btsmipn32_fbsd
 LD_EMULATION_mipsn32el= elf32btsmipn32_fbsd   # I don't think this is a thing that works
 LD_EMULATION_powerpc= elf32ppc_fbsd
 LD_EMULATION_powerpcspe= elf32ppc_fbsd
 LD_EMULATION_powerpc64= elf64ppc_fbsd
 LD_EMULATION_powerpc64le= elf64lppc_fbsd
 LD_EMULATION_riscv64= elf64lriscv
 LD_EMULATION_riscv64sf= elf64lriscv
 LD_EMULATION=${LD_EMULATION_${MACHINE_ARCH}}