Index: head/Makefile
===================================================================
--- head/Makefile
+++ head/Makefile
@@ -587,14 +587,14 @@
 _need_clang_${target}_${target_arch} != \
 	env TARGET=${target} TARGET_ARCH=${target_arch} \
 	${SUB_MAKE} -C ${.CURDIR} -f Makefile.inc1 test-system-compiler \
-	    -V MK_CLANG_BOOTSTRAP
+	    ${MAKE_PARAMS_${target}} -V MK_CLANG_BOOTSTRAP
 .export _need_clang_${target}_${target_arch}
 .endif
 .if !defined(_need_lld_${target}_${target_arch})
 _need_lld_${target}_${target_arch} != \
 	env TARGET=${target} TARGET_ARCH=${target_arch} \
 	${SUB_MAKE} -C ${.CURDIR} -f Makefile.inc1 test-system-linker \
-	    -V MK_LLD_BOOTSTRAP
+	    ${MAKE_PARAMS_${target}} -V MK_LLD_BOOTSTRAP
 .export _need_lld_${target}_${target_arch}
 .endif
 # Setup env for each arch to use the one clang.