--- TagLib.xs_orig	2012-08-24 13:42:24 +1000
+++ TagLib.xs	2012-08-26 20:36:17 +1000
@@ -17,17 +17,30 @@
 
 #include "iconv_wrap.h"
 
-#ifdef do_open(a,b,c,d,e,f,g)
-#undef do_open(a,b,c,d,e,f,g)
+#ifdef do_open
+/* #undef do_open(a,b,c,d,e,f,g) */
 #undef do_open
-#undef do_close(a,b)
+/* #undef do_close(a,b) */
 #undef do_close
 #endif
+
+#ifdef __MINGW32__
+#ifdef read
+#undef read
+#endif
+#ifdef write
+#undef write
+#endif
+#ifdef setbuf
+#undef setbuf
+#endif
+#endif
+
 #include "apeitem.h"
 #ifndef do_open
-#define do_open                 Perl_do_open
+/* #define do_open                 Perl_do_open */
 #define do_open(a,b,c,d,e,f,g)  Perl_do_open(aTHX_ a,b,c,d,e,f,g)
-#define do_close                Perl_do_close
+/* #define do_close                Perl_do_close */
 #define do_close(a,b)           Perl_do_close(aTHX_ a,b)
 #endif


For my mingw.org gcc-4.5.2 I needed also to add the following patches
but, for my mingw64.sf gcc-4.7.0 and 4.6.3, it was necessary that the
following patches NOT be applied.

 
--- include/iconv_wrap.h_orig	2012-08-24 13:34:03 +1000
+++ include/iconv_wrap.h_new	2012-08-26 20:38:07 +1000
@@ -26,7 +26,7 @@
 #else
     
 size_t iconv_wrap(iconv_t cd,
-                  char **inbuf,
+                  const char **inbuf,
                   size_t *inbytesleft,
                   char **outbuf,
                   size_t *outbytesleft)
--- xs/tstring.xs_orig	2012-08-25 17:36:48 +1000
+++ xs/tstring.xs_new	2012-08-25 17:52:56 +1000
@@ -18,7 +18,8 @@
 	enum TagLib::String::Type t;
 	bool is_copy_from_string = TRUE;
 	iconv_t codec;
-	char *inbuf, *outbuf;
+	const char *inbuf;
+        char *outbuf;
 	size_t inlen, outlen, utf8len;
 	char *utf8;
 	char *errmsg;
@@ -324,7 +325,8 @@
 PREINIT:
 	iconv_t codec;
 	char mb[8];
-	char *inbuf, *outbuf;
+	const char *inbuf;
+        char *outbuf;
 	size_t inlen, outlen;
 INIT:
 	outlen = 8;
--- xs/stringiterator.xs_orig	2012-08-25 17:53:38 +1000
+++ xs/stringiterator.xs_new	2012-08-25 17:54:52 +1000
@@ -53,7 +53,8 @@
 	iconv_t codec = iconv_open("UTF8", "WCHAR_T");
 	if(codec == (iconv_t)(-1))
 		croak("iconv_open failed");
-	char *inbuf, *outbuf;
+	const char *inbuf;
+        char *outbuf;
 	char utf8[1024];
 	size_t inlen, outlen;
 	inlen = sizeof(wchar_t);