diff --git a/libs/libc/machine/xtensa/CMakeLists.txt b/libs/libc/machine/xtensa/CMakeLists.txt
index 0f46f6c712..1364d55652 100644
--- a/libs/libc/machine/xtensa/CMakeLists.txt
+++ b/libs/libc/machine/xtensa/CMakeLists.txt
@@ -20,5 +20,39 @@
 #
 # ##############################################################################
 if(CONFIG_LIBC_ARCH_ELF)
-  target_sources(c PRIVATE arch_elf.c)
+  list(APPEND CSRCS arch_elf.c)
 endif()
+
+if(CONFIG_XTENSA_MEMCPY)
+  list(APPEND CSRCS arch_memcpy.S)
+endif()
+
+if(CONFIG_XTENSA_MEMMOVE)
+  list(APPEND CSRCS arch_memmove.S)
+endif()
+
+if(CONFIG_XTENSA_MEMSET)
+  list(APPEND CSRCS arch_memset.S)
+endif()
+
+if(CONFIG_ARCH_SETJMP_H)
+  list(APPEND CSRCS arch_setjmp.S)
+endif()
+
+if(CONFIG_XTENSA_STRCPY)
+  list(APPEND CSRCS arch_strcpy.S)
+endif()
+
+if(CONFIG_XTENSA_STRLEN)
+  list(APPEND CSRCS arch_strlen.S)
+endif()
+
+if(CONFIG_XTENSA_STRNCPY)
+  list(APPEND CSRCS arch_strncpy.S)
+endif()
+
+if(CONFIG_XTENSA_STRCMP)
+  list(APPEND CSRCS arch_strcmp.S)
+endif()
+
+target_sources(c PRIVATE ${CSRCS})