diff --git a/configure/os/CONFIG.win32-x86-borland.win32-x86-borland b/configure/os/CONFIG.win32-x86-borland.win32-x86-borland
index 5f9d13d58..a7d93bc0a 100644
--- a/configure/os/CONFIG.win32-x86-borland.win32-x86-borland
+++ b/configure/os/CONFIG.win32-x86-borland.win32-x86-borland
@@ -171,7 +171,7 @@ OP_SYS_CFLAGS =
 #
 # Borland specific include files
 #
-#OP_SYS_INCLUDES = -I$(BORLAND_INC)
+OP_SYS_INCLUDES = -I$(BORLAND_INC)
 #
 OP_SYS_LDLIBS = 
 
@@ -181,17 +181,6 @@ OP_SYS_LDLIBS =
 #DLL_DEF_FLAG = $(addprefix /def:,$(wildcard ../$(addsuffix .def,$(LIBRARY))))
 DLL_DEF_FLAG = $(subst /,\\,$(wildcard ../$(addsuffix .def,$(LIBRARY))))
 
-#   HOST_OPT_FLAGS is part of CFLAGS/CXXFLAGS,
-#   which in turn are used in COMPILE.c[c]
-#
-#   If we compile a .c, .cc into an $(OBJ),
-#   we test if this object is part of the
-#   library objects LIBRARY_LD_OBJS.
-#   If so, we define _WINDLL so that
-#   e.g. include/shareLib.h works correctly.
-#
-OPT_CFLAGS_YES += $(subst $@, /_WINDLL, $(findstring $@,$(LIBRARY_LD_OBJS)))
-
 #
 #   A WIN32 dll has three parts:
 #   x.dll: the real dll (SHRLIBNAME)
diff --git a/configure/os/CONFIG.win32-x86.win32-x86 b/configure/os/CONFIG.win32-x86.win32-x86
index e85c5ea90..4d136632d 100644
--- a/configure/os/CONFIG.win32-x86.win32-x86
+++ b/configure/os/CONFIG.win32-x86.win32-x86
@@ -196,17 +196,6 @@ WIN32_DLLFLAGS = /subsystem:windows /dll $(OPT_LDFLAGS)
 #
 DLL_DEF_FLAG = $(addprefix /def:,$(wildcard ../$(addsuffix .def,$(LIBRARY))))
 
-#	HOST_OPT_FLAGS is part of CFLAGS/CXXFLAGS,
-#	which in turn are used in COMPILE.c[c]
-#
-#	If we compile a .c, .cc into an $(OBJ),
-#	we test if this object is part of the 
-#	library objects LIBRARY_LD_OBJS.
-#	If so, we define _WINDLL so that
-#	e.g. include/shareLib.h works correctly.
-#
-HOST_OPT_FLAGS += $(subst $@, /_WINDLL, $(findstring $@,$(LIBRARY_LD_OBJS)))
-
 #
 #	A WIN32 dll has three parts:
 #	x.dll: the real dll (SHRLIBNAME)