Index: head/share/mk/bsd.linker.mk
===================================================================
--- head/share/mk/bsd.linker.mk	(revision 320245)
+++ head/share/mk/bsd.linker.mk	(revision 320246)
@@ -1,47 +1,76 @@
 # $FreeBSD$
 
 # Setup variables for the linker.
 #
 # LINKER_TYPE is the major type of linker. Currently binutils and lld support
 # automatic detection.
 #
 # LINKER_VERSION is a numeric constant equal to:
 #     major * 10000 + minor * 100 + tiny
 # It too can be overridden on the command line.
 #
 # These variables with an X_ prefix will also be provided if XLD is set.
 #
 # This file may be included multiple times, but only has effect the first time.
 #
 
 .if !target(__<bsd.linker.mk>__)
 __<bsd.linker.mk>__:
 
 .for ld X_ in LD $${_empty_var_} XLD X_
 .if ${ld} == "LD" || !empty(XLD)
+# Try to import LINKER_TYPE and LINKER_VERSION from parent make.
+# The value is only used/exported for the same environment that impacts
+# LD and LINKER_* settings here.
+_exported_vars=	${X_}LINKER_TYPE ${X_}LINKER_VERSION
+${X_}_ld_hash=	${${ld}}${MACHINE}${PATH}
+${X_}_ld_hash:=	${${X_}_ld_hash:hash}
+# Only import if none of the vars are set somehow else.
+_can_export=	yes
+.for var in ${_exported_vars}
+.if defined(${var})
+_can_export=	no
+.endif
+.endfor
+.if ${_can_export} == yes
+.for var in ${_exported_vars}
+.if defined(${var}.${${X_}_ld_hash})
+${var}=	${${var}.${${X_}_ld_hash}}
+.endif
+.endfor
+.endif
+
 .if ${ld} == "LD" || (${ld} == "XLD" && ${XLD} != ${LD})
 
 _ld_version!=	${${ld}} --version 2>/dev/null | head -n 1 || echo none
 .if ${_ld_version} == "none"
 .error Unable to determine linker type from ${ld}=${${ld}}
 .endif
 .if ${_ld_version:[1..2]} == "GNU ld"
 ${X_}LINKER_TYPE=	binutils
 _v=	${_ld_version:[3]}
 .elif ${_ld_version:[1]} == "LLD"
 ${X_}LINKER_TYPE=	lld
 _v=	${_ld_version:[2]}
 .else
 .error Unknown linker from ${ld}=${${ld}}: ${_ld_version}
 .endif
 ${X_}LINKER_VERSION!=	echo "${_v:M[1-9].[0-9]*}" | \
 			  awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}'
 .undef _ld_version
 .undef _v
 .endif	# ${ld} == "LD" || (${ld} == "XLD" && ${XLD} != ${LD})
+
+# Export the values so sub-makes don't have to look them up again, using the
+# hash key computed above.
+.for var in ${_exported_vars}
+${var}.${${X_}_ld_hash}:=	${${var}}
+.export-env ${var}.${${X_}_ld_hash}
+.undef ${var}.${${X_}_ld_hash}
+.endfor
 
 .endif	# ${ld} == "LD" || !empty(XLD)
 .endfor	# .for ld in LD XLD
 
 
 .endif	# !target(__<bsd.linker.mk>__)