diff --git a/ChangeLog b/ChangeLog
index 9961ed1b0e..0a4da6b5c2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Feb 16 20:28:52 2004  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
+
+	* bcc32/Makefile.sub: show more warnings. (refering to mingw)
+
+	* bcc32/setup.mak: ditto.
+
 Mon Feb 16 18:35:58 2004  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* win32/Makefile.sub (config.status): should create *.pdb on ext/,
diff --git a/bcc32/Makefile.sub b/bcc32/Makefile.sub
index 1a28bd0361..6de146eb12 100644
--- a/bcc32/Makefile.sub
+++ b/bcc32/Makefile.sub
@@ -113,7 +113,7 @@ TESTS =
 RDOCTARGET = install-doc
 !endif
 !ifndef CFLAGS
-CFLAGS = -q $(DEBUGFLAGS) $(OPTFLAGS) $(PROCESSOR_FLAG) -w- -wsus
+CFLAGS = -q $(DEBUGFLAGS) $(OPTFLAGS) $(PROCESSOR_FLAG) -w- -wsus -wcpt -wdup -wext -wrng -wrpt -wzdi
 !endif
 !ifndef CPPFLAGS
 CPPFLAGS = -I. -I$(srcdir) -I$(srcdir)missing
diff --git a/bcc32/setup.mak b/bcc32/setup.mak
index 8880360e55..04113dcaab 100644
--- a/bcc32/setup.mak
+++ b/bcc32/setup.mak
@@ -78,7 +78,7 @@ PROCESSOR_LEVEL = $(PROCESSOR_LEVEL)
 \# RUBY_INSTALL_NAME = ruby
 \# RUBY_SO_NAME = $$(RT)-$$(RUBY_INSTALL_NAME)$$(MAJOR)$$(MINOR)
 \# prefix = /usr
-\# CFLAGS = -q $$(DEBUGFLAGS) $$(OPTFLAGS) $$(PROCESSOR_FLAG) -w- -wsus
+\# CFLAGS = -q $$(DEBUGFLAGS) $$(OPTFLAGS) $$(PROCESSOR_FLAG) -w- -wsus -wcpt -wdup -wext -wrng -wrpt -wzdi
 \# CPPFLAGS = -I. -I$$(srcdir) -I$$(srcdir)missing -DLIBRUBY_SO=\"$$(LIBRUBY_SO)\"
 \# STACK = 0x2000000
 \# LDFLAGS = -S:$$(STACK)