Index: include/Make/Shlib.make
===================================================================
--- include/Make/Shlib.make	(revision 36196)
+++ include/Make/Shlib.make	(working copy)
@@ -3,9 +3,11 @@
 SHLIB = $(ARCH_LIBDIR)/$(SHLIB_PREFIX)$(SHLIB_NAME).$(GRASS_VERSION_NUMBER)$(SHLIB_SUFFIX)
 
 # Object that calls _setfmode(_O_BINARY) which must be linked to each DLL on Windows
+ifneq ($(SHLIB_NAME),$(DATETIME_LIBNAME))
 ifdef MINGW
   DLLMAIN_OBJ = $(MODULE_TOPDIR)/lib/gis/$(OBJDIR)/dllmain.o
 endif
+endif
 
 CFLAGS += $(SHLIB_CFLAGS) $(NLS_CFLAGS)
 LDFLAGS += $(SHLIB_LDFLAGS)