diff --git a/gcc/config/riscv/t-linux b/gcc/config/riscv/t-linux
index 216d2776a18..a6f64f88d25 100644
--- a/gcc/config/riscv/t-linux
+++ b/gcc/config/riscv/t-linux
@@ -1,3 +1,5 @@
 # Only XLEN and ABI affect Linux multilib dir names, e.g. /lib32/ilp32d/
 MULTILIB_DIRNAMES := $(patsubst rv32%,lib32,$(patsubst rv64%,lib64,$(MULTILIB_DIRNAMES)))
 MULTILIB_OSDIRNAMES := $(patsubst lib%,../lib%,$(MULTILIB_DIRNAMES))
+
+MULTIARCH_DIRNAME := $(call if_multiarch,$(firstword $(subst -, ,$(target)))-linux-gnu)