[bos #41189] Expose relevant DLL directories to ensure SALOME starts

diff --git a/src/Basics/KernelBasis.i b/src/Basics/KernelBasis.i
index 54616f81ef23976973488fbf913e7bb01ac636d3..7e8e2d5f6e6c31d748d7e66dac2082a558d25845 100644 (file)
--- a/src/Basics/KernelBasis.i
+++ b/src/Basics/KernelBasis.i
@@ -19,6 +19,38 @@
 
 %module KernelBasis
 
+%pythonbegin %{
+  # new mechanism introduced in Python 3.8+ about DLL resolution
+  import os
+  def __add_dll_directory__(path):
+    paths = [ p.replace("\\\\", "\\").replace("/", "\\") for p in sys.path]
+    if not path in paths and os.path.exists(path):
+      os.add_dll_directory(path)
+    else:
+      print("DEBUG: directory is already present in {}".format(path))
+    return
+
+  import platform
+  if platform.system() == "Windows":
+    import sys
+    if sys.version_info > (3,8) :
+      try:
+        import os
+        _dll_exposed = os.getenv("KERNEL_DLLs_Exposed", "")
+        if _dll_exposed == "" :
+          print("INFO: Exposing DLL directories")
+          __add_dll_directory__(os.path.join(os.getenv("KERNEL_ROOT_DIR"),  "lib", "salome"))
+          __add_dll_directory__(os.path.join(os.getenv("GUI_ROOT_DIR"),     "lib", "salome"))
+          __add_dll_directory__(os.path.join(os.getenv("GUI_ROOT_DIR"),     "lib", "salome"))
+          __add_dll_directory__(os.path.join(os.getenv("PTHREAD_ROOT_DIR"), "lib"          ))
+          __add_dll_directory__(os.path.join(os.getenv("PRODUCT_ROOT_DIR"), "W64", "lib"   ))
+          __add_dll_directory__(os.path.join(os.getenv("PRODUCT_ROOT_DIR"), "W64", "bin"   ))
+          __add_dll_directory__(os.getenv("OMNIORB_BIN_DIR"))
+          os.environ["KERNEL_DLLs_Exposed"] = "1"
+      except Exception:
+        print("FATAL: Exception raise while trying to expose DLLs")
+%}
+
 %{
 #include "KernelBasis.hxx"
 #include "HeatMarcel.hxx"
@@ -123,4 +155,4 @@ std::string VerbosityLevelSwig()
 def ReadFloatsInFile( fileName ):
   ret = ReadFloatsInFileSwig( fileName )
   return ret
-%}
\ No newline at end of file
+%}