Index: VirtualBox-4.1.8_OSE/src/VBox/Main/webservice/Makefile.kmk
===================================================================
--- VirtualBox-4.1.8_OSE.orig/src/VBox/Main/webservice/Makefile.kmk
+++ VirtualBox-4.1.8_OSE/src/VBox/Main/webservice/Makefile.kmk
@@ -194,7 +194,8 @@ ifdef VBOX_GSOAP_INSTALLED
  # vboxsoap - Library used by both the programs (save build time).
  #
  LIBRARIES += vboxsoap
- vboxsoap_TEMPLATE = VBOXR3EXE
+ vboxsoap_TEMPLATE = VBOXVISIBILITY
+
  ifdef VBOX_USE_VCC80
   vboxsoap_CXXFLAGS.win += -bigobj
  endif
@@ -410,7 +411,7 @@ $$(VBOX_JWSSRC_JAR): $$(VBOX_JWS_JAR) |
  # webtest - webservice sample client in C++
  #
  PROGRAMS += webtest
- webtest_TEMPLATE = VBOXR3EXE
+ webtest_TEMPLATE =  VBOXVISIBILITY
  ifdef VBOX_USE_VCC80
   webtest_CXXFLAGS.win += -bigobj
  endif
Index: VirtualBox-4.1.8_OSE/Config.kmk
===================================================================
--- VirtualBox-4.1.8_OSE.orig/Config.kmk
+++ VirtualBox-4.1.8_OSE/Config.kmk
@@ -3211,6 +3211,11 @@ TEMPLATE_VBOXR3EXE_CXXFLAGS.kprofile   =
  endif
 endif
 
+#enable visibility
+TEMPLATE_VBOXVISIBILITY       		= ommit -fvisibility=hidden flag
+TEMPLATE_VBOXVISIBILITY_EXTENDS		= VBOXR3EXE
+TEMPLATE_VBOXVISIBILITY_CXXFLAGS	= $(filter-out $(VBOX_GCC_fvisibility-hidden),$(TEMPLATE_VBOXR3EXE_CXXFLAGS))
+
 #
 # Template for building R3 shared objects / DLLs.
 # This is mostly identical to the VBOXR3EXE template. (Avoid PIC if possible!)