diff -ur a/gme/blargg_config.h b/gme/blargg_config.h
--- a/gme/blargg_config.h	2009-07-12 21:53:08.000000000 -0700
+++ b/gme/blargg_config.h	2013-01-25 23:17:34.403695100 -0800
@@ -4,7 +4,7 @@
 #define BLARGG_CONFIG_H
 
 // Uncomment to use zlib for transparent decompression of gzipped files
-//#define HAVE_ZLIB_H
+#define HAVE_ZLIB_H
 
 // Uncomment to enable platform-specific optimizations
 //#define BLARGG_NONPORTABLE 1
diff -ur a/gme/Data_Reader.cpp b/gme/Data_Reader.cpp
--- a/gme/Data_Reader.cpp	2008-12-20 16:14:46.000000000 -0800
+++ b/gme/Data_Reader.cpp	2013-01-25 23:18:54.287696978 -0800
@@ -290,13 +290,13 @@
 
 long Gzip_File_Reader::size() const { return size_; }
 
-long Gzip_File_Reader::read_avail( void* p, long s ) { return gzread( file_, p, s ); }
+long Gzip_File_Reader::read_avail( void* p, long s ) { return gzread( (gzFile)file_, p, s ); }
 
-long Gzip_File_Reader::tell() const { return gztell( file_ ); }
+long Gzip_File_Reader::tell() const { return gztell( (gzFile)file_ ); }
 
 blargg_err_t Gzip_File_Reader::seek( long n )
 {
-	if ( gzseek( file_, n, SEEK_SET ) >= 0 )
+	if ( gzseek( (gzFile)file_, n, SEEK_SET ) >= 0 )
 		return 0;
 	if ( n > size_ )
 		return eof_error;
@@ -307,7 +307,7 @@
 {
 	if ( file_ )
 	{
-		gzclose( file_ );
+		gzclose( (gzFile)file_ );
 		file_ = 0;
 	}
 }