Index: include/CMakeLists.txt
===================================================================
--- include/CMakeLists.txt
+++ include/CMakeLists.txt
@@ -228,11 +228,11 @@
     list(APPEND out_files ${dst})
   endif()
 
-  add_custom_target(cxx_headers ALL DEPENDS ${out_files} ${LIBCXX_CXX_ABI_HEADER_TARGET})
+  add_custom_target(cxx-headers ALL DEPENDS ${out_files} ${LIBCXX_CXX_ABI_HEADER_TARGET})
 else()
-  add_custom_target(cxx_headers)
+  add_custom_target(cxx-headers)
 endif()
-set_target_properties(cxx_headers PROPERTIES FOLDER "Misc")
+set_target_properties(cxx-headers PROPERTIES FOLDER "Misc")
 
 if (LIBCXX_INSTALL_HEADERS)
   foreach(file ${files})
@@ -255,7 +255,7 @@
 
   if (NOT CMAKE_CONFIGURATION_TYPES)
     add_custom_target(install-cxx-headers
-                      DEPENDS cxx_headers ${generated_config_deps}
+                      DEPENDS cxx-headers ${generated_config_deps}
                       COMMAND "${CMAKE_COMMAND}"
                               -DCMAKE_INSTALL_COMPONENT=cxx-headers
                               -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
Index: lib/CMakeLists.txt
===================================================================
--- lib/CMakeLists.txt
+++ lib/CMakeLists.txt
@@ -286,7 +286,7 @@
 endif()
 
 # Add a meta-target for both libraries.
-add_custom_target(cxx DEPENDS cxx_headers ${LIBCXX_TARGETS})
+add_custom_target(cxx DEPENDS cxx-headers ${LIBCXX_TARGETS})
 
 if (LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
   file(GLOB LIBCXX_EXPERIMENTAL_SOURCES ../src/experimental/*.cpp)