diff --git a/gcc/config/gnu-user.h b/gcc/config/gnu-user.h
index cb45749..8c4bbc6 100644
--- a/gcc/config/gnu-user.h
+++ b/gcc/config/gnu-user.h
@@ -98,3 +98,7 @@ see the files COPYING3 and COPYING.RUNTIME
respectively.  If not, see

 #define TARGET_C99_FUNCTIONS 1
 #define TARGET_HAS_SINCOS 1
+
+/* Additional libraries needed by -static-libasan.  */
+#undef STATIC_LIBASAN_LIBS
+#define STATIC_LIBASAN_LIBS "-ldl -lpthread"
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 7a275e1..ef8a485 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -546,8 +546,12 @@ proper position among the other output files.  */

 #ifndef LIBASAN_SPEC
 #ifdef HAVE_LD_STATIC_DYNAMIC
+#ifndef STATIC_LIBASAN_LIBS
+#define STATIC_LIBASAN_LIBS
+#endif
 #define LIBASAN_SPEC "%{static-libasan:" LD_STATIC_OPTION \
-		     "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION "}"
+		     "} -lasan %{static-libasan:" LD_DYNAMIC_OPTION \
+		     " " STATIC_LIBASAN_LIBS "}"
 #else
 #define LIBASAN_SPEC "-lasan"
 #endif