--- a/gcc/config/aarch64/aarch64-linux.h
+++ b/gcc/config/aarch64/aarch64-linux.h
@@ -21,7 +21,11 @@
 #ifndef GCC_AARCH64_LINUX_H
 #define GCC_AARCH64_LINUX_H
 
+/* The AArch64 port currently supports two dynamic linkers:
+   - ld-linux-aarch64.so.1 - GLIBC dynamic linker
+   - ld-musl-aarch64.so.1 - musl libc dynamic linker  */
 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
+#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
 
 #define CPP_SPEC "%{pthread:-D_REENTRANT}"