diff --git a/core2/CMakeLists.txt b/core2/CMakeLists.txt
new file mode 100644
index 00000000..e69de29b
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index c6876d24..bc49695f 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -1,3 +1,4 @@
+include(filament.cmake)
 if(COMMAND cmake_policy)
     cmake_policy(SET CMP0003 NEW)
 endif(COMMAND cmake_policy)
diff --git a/external/filament.cmake b/external/filament.cmake
new file mode 100644
index 00000000..e8d60f36
--- /dev/null
+++ b/external/filament.cmake
@@ -0,0 +1,12 @@
+# https://github.com/google/filament.git
+#SET(ENABLE_PCH OFF CACHE BOOL "ENABLE_PCH")
+SET_PROPERTY(GLOBAL PROPERTY SKIP_PRECOMPILE_HEADERS ON)
+SET_PROPERTY(GLOBAL PROPERTY DISABLE_PRECOMPILE_HEADERS ON)
+CPMAddPackage(GITHUB_REPOSITORY google/filament
+        GIT_TAG v1.29.0
+        OPTIONS "ENABLE_PCH OFF" "ENABLE_OPT OFF"
+        )
+find_package(filament REQUIRED)
+IF(filament_ADDED)
+    MESSAGE(STATUS filament_ADDED)
+ENDIF()
\ No newline at end of file