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-rw-r--r--source/soundux.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/source/soundux.h b/source/soundux.h
index a3b4bbc..5cb4218 100644
--- a/source/soundux.h
+++ b/source/soundux.h
@@ -48,7 +48,7 @@ typedef struct
bool mute_sound;
} SoundStatus;
-SoundStatus so;
+extern SoundStatus so;
typedef struct
{
@@ -105,7 +105,7 @@ typedef struct
int32_t noise_hertz;
} SSoundData;
-SSoundData SoundData;
+extern SSoundData SoundData;
void S9xSetSoundVolume(int32_t channel, int16_t volume_left, int16_t volume_right);
void S9xSetSoundFrequency(int32_t channel, int32_t hertz);