Fix builds that set LD=ld.lld after r364761

When using relative paths for the linker we have to transform the name
since clang does not like -fuse-ld=ld.lld and instead requires -fuse-ld=lld
(the same also applies for ld.bfd).

2 files changed, 4 insertions, 2 deletions

diff --git a/share/mk/bsd.sys.mk b/share/mk/bsd.sys.mk
index 2cf95f570c6c..fd2525e56799 100644
--- a/share/mk/bsd.sys.mk
+++ b/share/mk/bsd.sys.mk
@@ -289,7 +289,8 @@ CFLAGS+=	ERROR-tried-to-rebuild-during-make-install
 # Add -fuse-ld=${LD} if $LD is in a different directory or not called "ld".
 # Note: Clang 12+ will prefer --ld-path= over -fuse-ld=.
 .if ${COMPILER_TYPE} == "clang"
-LDFLAGS+=	-fuse-ld=${LD:[1]}
+# Note: Clang does not like relative paths in -fuse-ld so we map ld.lld -> lld.
+LDFLAGS+=	-fuse-ld=${LD:[1]:S/^ld.//1W}
 .else
 # GCC does not support an absolute path for -fuse-ld so we just print this
 # warning instead and let the user add the required symlinks.
diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk
index bf278e1716aa..de5286688e13 100644
--- a/sys/conf/kern.mk
+++ b/sys/conf/kern.mk
@@ -278,7 +278,8 @@ CFLAGS+=        -std=${CSTD}
 # Note: unlike bsd.sys.mk we can't use LDFLAGS here since that is used for the
 # flags required when linking the kernel. We don't need those flags when
 # building the vdsos. However, we do need -fuse-ld, so use ${CCLDFLAGS} instead.
-CCLDFLAGS+=	-fuse-ld=${LD:[1]}
+# Note: Clang does not like relative paths in -fuse-ld so we map ld.lld -> lld.
+CCLDFLAGS+=	-fuse-ld=${LD:[1]:S/^ld.//1W}
 .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.