Here are the patches against the current source tree. I have run the

regression test on a FreeBSD box with both non-MULTIBYTE and
MULTIBYTE-enabled, and confirmed that the results are same.

However I do not tested on PCs(I don't have access to win). Please let
me know if the patches break anything on PCs.

Also please note that the patch for varchar.c is a fix for a nasty bug
of char(n) types that I introduced and I believe at least this should
be applied.

Tatsuo Ishii

src/interfaces/libpq/fe-print.c

@@ -9,7 +9,7 @@
  * didn't really belong there.
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-print.c,v 1.13 1998/10/04 20:46:39 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-print.c,v 1.14 1998/10/06 03:02:25 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -513,7 +513,17 @@ PQmblen(unsigned char *s)
 	return (pg_encoding_mblen(encoding, s));
 }
 
-#endif
+#else
+
+#ifdef WIN32
+int
+PQmblen(unsigned char *s)
+{
+}
+#endif	/* WIN32 */
+
+
+#endif	/* MULTIBYTE */
 
 static void
 do_field(PQprintOpt *po, PGresult *res,

src/interfaces/libpq/libpqdll.def

@@ -63,4 +63,5 @@ EXPORTS
 	lo_unlink		@ 60
 	lo_import		@ 61
 	lo_export		@ 62
-	PQresultErrorMessage	@ 63
+	pgresStatus		@ 63
+	PQmblen			@ 64

src/interfaces/libpq/win32.mak

@@ -33,7 +33,7 @@ CLEAN :
 	-@erase "$(OUTDIR)\libpq.lib"
 	-@erase "$(OUTDIR)\libpq.dll"
 	-@erase "$(OUTDIR)\libpq.res"
-	-@erase "$(OUTDIR)\vc*.*"
+	-@erase "vc50.pch"
 	-@erase "$(OUTDIR)\libpq.pch"
 	-@erase "$(OUTDIR)\libpqdll.exp"
 	-@erase "$(OUTDIR)\libpqdll.lib"
@@ -44,6 +44,14 @@ CLEAN :
 CPP_PROJ=/nologo /ML /W3 /GX /O2 /I "..\..\include" /D "NDEBUG" /D\
  "WIN32" /D "_WINDOWS" /Fp"$(INTDIR)\libpq.pch" /YX\
  /Fo"$(INTDIR)\\" /Fd"$(INTDIR)\\" /FD /c 
+
+!IFDEF MULTIBYTE
+!IFNDEF	MBFLAGS
+MBFLAGS="-DMULTIBYTE=$(MULTIBYTE)"
+!ENDIF
+CPP_PROJ = $(CPP_PROJ) $(MBFLAGS)
+!ENDIF
+
 CPP_OBJS=.\Release/
 CPP_SBRS=.
 	
@@ -58,6 +66,10 @@ LIB32_OBJS= \
 	"$(INTDIR)\fe-misc.obj" \
 	"$(INTDIR)\fe-print.obj"
 
+!IFDEF MULTIBYTE
+LIB32_OBJS = $(LIB32_OBJS) $(INTDIR)\common.obj $(INTDIR)\wchar.obj $(INTDIR)\conv.obj
+!ENDIF
+
 RSC_PROJ=/l 0x409 /fo"$(INTDIR)\libpq.res"
 
 LINK32=link.exe