diff --git a/libc/fuzzing/string/CMakeLists.txt b/libc/fuzzing/string/CMakeLists.txt
--- a/libc/fuzzing/string/CMakeLists.txt
+++ b/libc/fuzzing/string/CMakeLists.txt
@@ -4,4 +4,5 @@
     strcpy_fuzz.cpp
   DEPENDS
     strcpy
+    memcpy
 )
diff --git a/libc/src/math/round_redirector.cpp b/libc/src/math/round_redirector.cpp
--- a/libc/src/math/round_redirector.cpp
+++ b/libc/src/math/round_redirector.cpp
@@ -13,7 +13,8 @@
 namespace __llvm_libc {
 
 double __round_redirector(double x) {
-  return ::round(x);
+  // Call system round since llvm-libc round is yet to be implemented.
+  return ::round(x); // LIBC-NOLINT
 }
 
 } // namespace __llvm_libc
diff --git a/libc/src/string/CMakeLists.txt b/libc/src/string/CMakeLists.txt
--- a/libc/src/string/CMakeLists.txt
+++ b/libc/src/string/CMakeLists.txt
@@ -19,6 +19,7 @@
     strcpy.h
   DEPENDS
     string_h
+    memcpy
 )
 
 # ------------------------------------------------------------------------------
diff --git a/libc/src/string/strcpy.cpp b/libc/src/string/strcpy.cpp
--- a/libc/src/string/strcpy.cpp
+++ b/libc/src/string/strcpy.cpp
@@ -7,13 +7,15 @@
 //===----------------------------------------------------------------------===//
 
 #include "src/string/strcpy.h"
+#include "src/string/memcpy.h"
 
 #include "src/__support/common.h"
 
 namespace __llvm_libc {
 
 char *LLVM_LIBC_ENTRYPOINT(strcpy)(char *dest, const char *src) {
-  return reinterpret_cast<char *>(::memcpy(dest, src, ::strlen(src) + 1));
+  return reinterpret_cast<char *>(
+      __llvm_libc::memcpy(dest, src, ::strlen(src) + 1));
 }
 
 } // namespace __llvm_libc
diff --git a/libc/test/src/string/CMakeLists.txt b/libc/test/src/string/CMakeLists.txt
--- a/libc/test/src/string/CMakeLists.txt
+++ b/libc/test/src/string/CMakeLists.txt
@@ -11,6 +11,7 @@
   DEPENDS
     strcat
     strcpy
+    memcpy
 )
 
 add_libc_unittest(
@@ -21,6 +22,7 @@
     strcpy_test.cpp
   DEPENDS
     strcpy
+    memcpy
 )
 
 # Tests all implementations of memcpy that can run on the host.