1 files changed, 10 insertions, 0 deletions

diff --git a/rbutil/libtools.make b/rbutil/libtools.make
index 1ba0f77f72..227d61b7d4 100644
--- a/rbutil/libtools.make
+++ b/rbutil/libtools.make
@@ -98,6 +98,16 @@ lib$(OUTPUT)$(RBARCH): $(TARGET_DIR)lib$(OUTPUT)$(RBARCH).a
 
 $(TARGET_DIR)lib$(OUTPUT)$(RBARCH).a: $(LIBOBJS) \
                                       $(addprefix $(OBJDIR),$(EXTRALIBOBJS))
+# rules to build a DLL. Only works for W32 as target (i.e. MinGW toolchain)
+dll: $(OUTPUT).dll
+$(OUTPUT).dll: $(TARGET_DIR)$(OUTPUT).dll
+$(TARGET_DIR)$(OUTPUT).dll: $(LIBOBJS) $(addprefix $(OBJDIR),$(EXTRALIBOBJS))
+        @echo DLL $(notdir $@)
+        $(SILENT)mkdir -p $(dir $@)
+        $(SILENT)$(CROSS)$(CC) $(CFLAGS) -shared -o $@ $^ \
+                    -Wl,--output-def,$(TARGET_DIR)$(OUTPUT).def
+
+$(TARGET_DIR)lib$(OUTPUT)$(RBARCH).a: $(LIBOBJS) $(addprefix $(OBJDIR),$(EXTRALIBOBJS))
         @echo AR $(notdir $@)
         $(SILENT)mkdir -p $(dir $@)
         $(SILENT)$(AR) rucs $@ $^