option -Yd has been deprecated in msvc8,
option -debugtype:coff is unsupported in msvc8

auto/cc/msvc

diff --git a/auto/cc/msvc b/auto/cc/msvc
index dde8448..b3f4121 100644
--- a/auto/cc/msvc
+++ b/auto/cc/msvc
@@ -91,8 +91,8 @@
 CORE_LINK="$CORE_LINK -subsystem:windows -entry:mainCRTStartup"
 
 # debug
-CFLAGS="$CFLAGS -Yd"
-CORE_LINK="$CORE_LINK -debug -debugtype:coff"
+CFLAGS="$CFLAGS -Zi"
+CORE_LINK="$CORE_LINK -debug"
 
 
 # precompiled headers