added mesh integration finder

CMakeLists.txt

@@ -218,7 +218,9 @@ add_subdirectory (OpenFlipper/Documentation/UserQtHelpTarget)
 # PolyLine extension special case
 # ========================================================================
 
-if ( EXISTS ${CMAKE_SOURCE_DIR}/libs/MeshIntegration )
+find_package (MeshIntegration)
+
+if (MESH_INTEGRATION_FOUND)
   add_definitions( -DEXTENDED_POLY_LINE )
 endif()
 

cmake/FindMeshIntegration.cmake

+# Try to find MeshIntegration
+# Once done this will define
+
+# MESH_INTEGRATION_FOUND           - system has MeshIntegration
+# MESH_INTEGRATION_INCLUDE_DIRS    - the MeshIntegration include directories
+
+IF (MESH_INTEGRATION_INCLUDE_DIRS)
+  # Already in cache, be silent
+  SET(MESH_INTEGRATION_FIND_QUIETLY TRUE)
+ENDIF (MESH_INTEGRATION_INCLUDE_DIRS)
+
+file (
+  GLOB _libdirs
+           "${CMAKE_SOURCE_DIR}/libs/MeshIntegration"
+           "${CMAKE_SOURCE_DIR}/Package-*/libs/MeshIntegration"
+)
+
+FIND_PATH( MESH_INTEGRATION_INCLUDE_DIR PolyLineIntegrationT.hh
+           PATHS "${_libdirs}"
+                 "${CMAKE_SOURCE_DIR}/libs" )
+
+INCLUDE (FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(MeshIntegration DEFAULT_MSG MESH_INTEGRATION_INCLUDE_DIR)
+
+IF (MESHINTEGRATION_FOUND)
+  SET(MESH_INTEGRATION_INCLUDE_DIRS "${MESH_INTEGRATION_INCLUDE_DIR}")
+  SET(MESH_INTEGRATION_FOUND TRUE)
+ENDIF (MESHINTEGRATION_FOUND)