From f3fc9371298248adf596e09af7b797faa7b55592 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Thu, 25 Mar 2021 20:18:34 +0300
Subject: [PATCH] bos #18711 Adapt NETGEN detection procedure for version 6x:
 manage case when NETGEN has cmake CONFIG file

---
 cmake/FindNetgen.cmake       | 19 +++++++++---------
 cmake/FindSalomeNetgen.cmake | 37 ++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 10 deletions(-)

diff --git a/cmake/FindNetgen.cmake b/cmake/FindNetgen.cmake
index 9dc57f5..4a9d6c7 100644
--- a/cmake/FindNetgen.cmake
+++ b/cmake/FindNetgen.cmake
@@ -1,5 +1,6 @@
 # - Find NETGEN
 # Sets the following variables:
+#   NETGEN_DEFINITIONS  - compile flags
 #   NETGEN_INCLUDE_DIRS - path to the NETGEN include directories
 #   NETGEN_LIBRARIES    - path to the NETGEN libraries to be linked against
 #
@@ -51,9 +52,14 @@ ENDIF()
 
 FIND_PATH(_netgen_base_inc_dir nglib.h)
 SET(NETGEN_INCLUDE_DIRS ${_netgen_base_inc_dir} ${ZLIB_INCLUDE_DIRS})
-FIND_PATH(_netgen_add_inc_dir occgeom.hpp HINTS ${_netgen_base_inc_dir} PATH_SUFFIXES share/netgen/include include)
-LIST(APPEND NETGEN_INCLUDE_DIRS ${_netgen_add_inc_dir})
-LIST(REMOVE_DUPLICATES NETGEN_INCLUDE_DIRS)
+FIND_PATH(_netgen_add_inc_dir1 occgeom.hpp HINTS ${_netgen_base_inc_dir} PATH_SUFFIXES share/netgen/include include)
+IF(_netgen_add_inc_dir1)
+  LIST(APPEND NETGEN_INCLUDE_DIRS ${_netgen_add_inc_dir1})
+ENDIF()
+FIND_PATH(_netgen_add_inc_dir2 exception.hpp HINTS ${_netgen_base_inc_dir} PATH_SUFFIXES share/netgen/include share/netgen/include/core include include/core)
+IF(_netgen_add_inc_dir2)
+  LIST(APPEND NETGEN_INCLUDE_DIRS ${_netgen_add_inc_dir2})
+ENDIF()
 
 FOREACH(_lib nglib csg gen geom2d gprim interface la mesh occ stl ngcore)
 
@@ -105,13 +111,6 @@ IF(NETGEN_FOUND)
   ENDIF()
   SET(NETGEN_DEFINITIONS "-DOCCGEOMETRY")
 
-  IF(NETGEN_V5)
-    MESSAGE(STATUS "NETGEN V5 found")
-    SET(NETGEN_DEFINITIONS "${NETGEN_DEFINITIONS} -DNETGEN_V5")
-  ELSEIF(NETGEN_V6)
-    MESSAGE(STATUS "NETGEN V6 or newer found")
-  ENDIF()
-
   #RNV:  currently on windows use netgen without thread support.
   #TODO: check support of the multithreading on windows
   IF(WIN32)
diff --git a/cmake/FindSalomeNetgen.cmake b/cmake/FindSalomeNetgen.cmake
index d47ec39..e5ba53e 100644
--- a/cmake/FindSalomeNetgen.cmake
+++ b/cmake/FindSalomeNetgen.cmake
@@ -20,6 +20,43 @@
 SALOME_FIND_PACKAGE_AND_DETECT_CONFLICTS(Netgen NETGEN_INCLUDE_DIRS 1)
 MARK_AS_ADVANCED(NETGEN_INCLUDE_DIRS NETGEN_LIBRARIES)
 
+# process case when netgen is found in config mode
+IF(NOT NETGEN_DEFINITIONS AND NETGEN_COMPILE_DEFINITIONS)
+  SET(NETGEN_DEFINITIONS)
+  FOREACH(_ng_def ${NETGEN_COMPILE_DEFINITIONS})
+    LIST(APPEND NETGEN_DEFINITIONS "-D${_ng_def}")
+  ENDFOREACH()
+ENDIF()
+IF(NOT NETGEN_LIBRARIES)
+  SET(NETGEN_LIBRARIES)
+  FOREACH(_ng_lib nglib csg gen geom2d gprim interface la mesh occ stl ngcore)
+    IF(TARGET ${_ng_lib})
+      LIST(APPEND NETGEN_LIBRARIES "${_ng_lib}")
+    ENDIF()
+  ENDFOREACH()
+ENDIF()
+IF(NOT NETGEN_V5 AND NOT NETGEN_V6 AND NETGEN_VERSION_MAJOR)
+  IF(NETGEN_VERSION_MAJOR VERSION_EQUAL 6)
+    SET(NETGEN_V6 ON)
+  ELSEIF(NETGEN_VERSION_MAJOR VERSION_EQUAL 5)
+    SET(NETGEN_V5 ON)
+  ENDIF()
+ENDIF()
+IF(NETGEN_INCLUDE_DIR AND NETGEN_INCLUDE_DIRS)
+  LIST(APPEND NETGEN_INCLUDE_DIRS ${NETGEN_INCLUDE_DIR}/core)
+ENDIF()
+IF(NETGEN_INCLUDE_DIRS)
+  LIST(REMOVE_DUPLICATES NETGEN_INCLUDE_DIRS)
+ENDIF()
+
+IF(NETGEN_V6)
+  MESSAGE(STATUS "NETGEN V6 or newer found")
+  SET(NETGEN_DEFINITIONS "${NETGEN_DEFINITIONS} -DNETGEN_V6")
+ELSEIF(NETGEN_V5)
+  MESSAGE(STATUS "NETGEN V5 found")
+  SET(NETGEN_DEFINITIONS "${NETGEN_DEFINITIONS} -DNETGEN_V5")
+ENDIF()
+
 IF(NETGEN_FOUND)
   SALOME_ACCUMULATE_HEADERS(NETGEN_INCLUDE_DIRS)
   SALOME_ACCUMULATE_ENVIRONMENT(LD_LIBRARY_PATH ${NETGEN_LIBRARIES})
-- 
2.39.2