diff --git a/CMakeLists.txt b/CMakeLists.txt
index 418ef9f..0f639a5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -96,6 +96,14 @@ set(photon_libc_include_dirs
 
 set(photon_libc_cflags -ffreestanding -nostdlib -fPIC -fPIE)
 
+add_custom_target(photon-prefix
+    DEPENDS ${photon_libc_headers}
+    COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/generate-sysroot.py
+        ${CMAKE_CURRENT_SOURCE_DIR}
+        ${CMAKE_CURRENT_BINARY_DIR}
+        ${CMAKE_CURRENT_BINARY_DIR}/prefix
+        ${machine} ${platform})
+
 if (PHOTON_EXPORT_VARS)
     set(photon_libc_sources ${photon_libc_sources} PARENT_SCOPE)
     set(photon_libc_headers ${photon_libc_headers} ${platform_headers} PARENT_SCOPE)
@@ -124,12 +132,6 @@ endif ()
 #         ${CMAKE_CURRENT_SOURCE_DIR}/photon/libc/sys/${platform}/${platform_include_dir})
 # endforeach (platform_include_dir)
 #
-# add_custom_target(local-root
-#     DEPENDS ${photon_libc_headers}
-#     COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/scripts/create-sysroot.sh
-#         ${CMAKE_CURRENT_SOURCE_DIR}
-#         ${CMAKE_CURRENT_BINARY_DIR}
-#         ${platform} ${machine})
 #
 # bundle_add_dependencies(photon local-root crt)
 #