stdcall and declspec(dllexport) don't play nicely together

Change-Id: I56da76771790cb6824ac3d01072d9143cb580741

setup_native/Library_sellangmsi.mk

@@ -13,6 +13,10 @@ $(eval $(call gb_Library_add_defs,sellangmsi,\
 	-D_STLP_USE_STATIC_LIB \
 ))
 
+$(eval $(call gb_Library_add_ldflags,sellangmsi,\
+	/DEF:$(SRCDIR)/setup_native/source/win32/customactions/sellang/sellang.def \
+))
+
 $(eval $(call gb_Library_add_exception_objects,sellangmsi,\
     setup_native/source/win32/customactions/sellang/sellang \
     setup_native/source/win32/customactions/sellang/sorttree \

setup_native/source/win32/customactions/sellang/sellang.cxx

@@ -232,7 +232,7 @@ void addMatchingDictionaries(
 
 }
 
-extern "C" __declspec(dllexport) UINT __stdcall SelectLanguage( MSIHANDLE handle )
+extern "C" UINT __stdcall SelectLanguage( MSIHANDLE handle )
 {
     char feature[100];
     MSIHANDLE database, view, record;

setup_native/source/win32/customactions/sellang/sellang.def

@@ -0,0 +1,4 @@
+LIBRARY		"sellangmsi.dll"
+EXPORTS
+			SelectLanguage
+			SortTree

setup_native/source/win32/customactions/sellang/sorttree.cxx

@@ -18,7 +18,7 @@
 #pragma warning(pop)
 #endif
 
-extern "C" __declspec(dllexport) UINT __stdcall SortTree(MSIHANDLE)
+extern "C" UINT __stdcall SortTree(MSIHANDLE)
 {
     // Sort items (languages) in SelectionTree control, fdo#46355