diff --git a/libc/src/__support/CPP/CMakeLists.txt b/libc/src/__support/CPP/CMakeLists.txt
--- a/libc/src/__support/CPP/CMakeLists.txt
+++ b/libc/src/__support/CPP/CMakeLists.txt
@@ -60,6 +60,7 @@
   HDRS
     string.h
   DEPENDS
+    libc.include.stdlib
     .string_view
     libc.src.__support.common
     libc.src.__support.integer_to_string