gentoo-overlay/media-sound/wavegain/files/wavegain-1.3.1-fno-common.patch

--- a/audio.h
+++ b/audio.h
@@ -136,7 +136,7 @@
 long wav_read(void *, double **buffer, int samples, int fast, int chunk);
 long wav_ieee_read(void *, double **buffer, int samples, int fast, int chunk);
 
-enum {
+typedef enum {
 	WAV_NO_FMT = 0,
 	WAV_FMT_8BIT,
 	WAV_FMT_16BIT,