From 0257f416b2065ad87fe73569d1e4da437893b69f Mon Sep 17 00:00:00 2001
From: Matthias Hochsteger <matthias.hochsteger@tuwien.ac.at>
Date: Thu, 25 Jan 2018 14:01:57 +0100
Subject: [PATCH] [cmake] Search pybind11 if USE_SUPERBUILD=OFF

Also don't install the pybind headers without superbuild
---
 CMakeLists.txt         | 12 ++++++++++--
 cmake/SuperBuild.cmake | 12 ++++++++++--
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c1bdadf..504e4314 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -257,12 +257,20 @@ endif (USE_GUI)
 #######################################################################
 if (USE_PYTHON)
     add_definitions(-DNG_PYTHON)
+    find_path(PYBIND_INCLUDE_DIR pybind11/pybind11.h HINTS ${PYTHON_INCLUDE_DIR})
+    if( PYBIND_INCLUDE_DIR )
+        message(STATUS "Found Pybind11: ${PYBIND_INCLUDE_DIR}")
+    else( PYBIND_INCLUDE_DIR )
+        message(FATAL_ERROR "Could NOT find pybind11!")
+    endif( PYBIND_INCLUDE_DIR )
 
     include_directories(${PYBIND_INCLUDE_DIR})
     include_directories(${PYTHON_INCLUDE_DIRS})
 
-    install(DIRECTORY ${PYBIND_INCLUDE_DIR}/pybind11 DESTINATION ${NG_INSTALL_DIR_INCLUDE} COMPONENT netgen_devel)
-    install(FILES ${PYBIND_INCLUDE_DIR}/../LICENSE DESTINATION ${NG_INSTALL_DIR_INCLUDE}/pybind11 COMPONENT netgen_devel)
+    if(NG_INSTALL_PYBIND)
+      install(DIRECTORY ${PYBIND_INCLUDE_DIR}/pybind11 DESTINATION ${NG_INSTALL_DIR_INCLUDE} COMPONENT netgen_devel)
+      install(FILES ${PYBIND_INCLUDE_DIR}/../LICENSE DESTINATION ${NG_INSTALL_DIR_INCLUDE}/pybind11 COMPONENT netgen_devel)
+    endif(NG_INSTALL_PYBIND)
 endif (USE_PYTHON)
 
 #######################################################################
diff --git a/cmake/SuperBuild.cmake b/cmake/SuperBuild.cmake
index 40fb8d69..86daba2e 100644
--- a/cmake/SuperBuild.cmake
+++ b/cmake/SuperBuild.cmake
@@ -51,10 +51,11 @@ endif(NOT WIN32)
 #######################################################################
 if (USE_PYTHON)
   find_path(PYBIND_INCLUDE_DIR pybind11/pybind11.h PATHS ${CMAKE_CURRENT_SOURCE_DIR}/external_dependencies/pybind11/include NO_DEFAULT_PATH)
+    set(NG_INSTALL_PYBIND ON)
     if( NOT PYBIND_INCLUDE_DIR )
       # if the pybind submodule is missing, try to initialize and update all submodules
       execute_process(COMMAND git submodule update --init --recursive WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
-        find_path(PYBIND_INCLUDE_DIR pybind11/pybind11.h ${CMAKE_CURRENT_SOURCE_DIR}/external_dependencies/pybind11/include)
+      find_path(PYBIND_INCLUDE_DIR pybind11/pybind11.h PATHS ${CMAKE_CURRENT_SOURCE_DIR}/external_dependencies/pybind11/include NO_DEFAULT_PATH)
     endif( NOT PYBIND_INCLUDE_DIR )
     if( PYBIND_INCLUDE_DIR )
         message("-- Found Pybind11: ${PYBIND_INCLUDE_DIR}")
@@ -64,7 +65,14 @@ if (USE_PYTHON)
     find_package(PythonInterp 3 REQUIRED)
     find_package(PythonLibs 3 REQUIRED)
 
-    set_vars(NETGEN_CMAKE_ARGS PYTHON_INCLUDE_DIRS PYTHON_LIBRARIES PYTHON_EXECUTABLE PYTHON_VERSION PYBIND_INCLUDE_DIR)
+    set_vars(NETGEN_CMAKE_ARGS
+      PYTHON_INCLUDE_DIRS
+      PYTHON_LIBRARIES
+      PYTHON_EXECUTABLE
+      PYTHON_VERSION
+      PYBIND_INCLUDE_DIR
+      NG_INSTALL_PYBIND
+      )
 endif (USE_PYTHON)
 
 #######################################################################