---
 CMakeLists.txt |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Index: cadabra2-2.5.4/CMakeLists.txt
===================================================================
--- cadabra2-2.5.4.orig/CMakeLists.txt
+++ cadabra2-2.5.4/CMakeLists.txt
@@ -297,7 +297,10 @@ set(PYTHON_POSTFIX "3")
 # message(STATUS "Building for use with Python 3 (good!)")
 
 find_package(Python COMPONENTS Interpreter Development)
-add_subdirectory(libs/pybind11)
+find_package(pybind11 CONFIG)
+if (NOT pybind11_FOUND)
+  add_subdirectory(libs/pybind11)
+endif()
 
 message(STATUS "Found python ${PYTHON_LIBRARIES}")
 #find_package (Python COMPONENTS Interpreter)