diff --git a/libcxx/CMakeLists.txt b/libcxx/CMakeLists.txt
index 3565169fd7c0..58abdf8a8f6e 100644
--- a/libcxx/CMakeLists.txt
+++ b/libcxx/CMakeLists.txt
@@ -47,6 +47,7 @@ option(LIBCXX_BUILD_32_BITS "Build 32 bit libc++" OFF)
 option(LIBCXX_ENABLE_MONOTONIC_CLOCK
   "Build libc++ with support for a monotonic clock.
    This option may only be used when LIBCXX_ENABLE_THREADS=OFF." ON)
+option(LIBCXX_INSTALL_HEADERS "Install the libc++ headers." ON)
 option(LIBCXX_INSTALL_SUPPORT_HEADERS "Install libc++ support headers." ON)
 if (LIBCXX_BUILT_STANDALONE)
   set(LLVM_USE_SANITIZER "" CACHE STRING
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index df2cd343d21e..95206bfeeaff 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -14,9 +14,11 @@ file(COPY .
   ${LIBCXX_HEADER_PATTERN}
   )
 
-install(DIRECTORY .
-  DESTINATION include/c++/v1
-  FILES_MATCHING
-  ${LIBCXX_HEADER_PATTERN}
-  PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
+if (LIBCXX_INSTALL_HEADERS)
+  install(DIRECTORY .
+    DESTINATION include/c++/v1
+    FILES_MATCHING
+    ${LIBCXX_HEADER_PATTERN}
+    PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
   )
+endif()