Remove compiler warnings when building the emulator.

This forces -Wall during the build. Note that this patch doesn't
remove all warnings, but most of the remaining ones are from upstream anyway.

Change-Id: I8808d8495e99866e156ce5780d2e3c305eab491f

2 files changed, 19 insertions, 0 deletions

diff --git a/audio/audio.c b/audio/audio.c
index aa4102b..6f107dc 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -201,6 +201,7 @@ struct mixeng_volume nominal_volume = {
 #endif
 };
 
+#if 0
 /* http://www.df.lth.se/~john_e/gems/gem002d.html */
 /* http://www.multi-platforms.com/Tips/PopCount.htm */
 uint32_t popcount (uint32_t u)
@@ -217,6 +218,7 @@ inline uint32_t lsbindex (uint32_t u)
 {
     return popcount ((u&-u)-1);
 }
+#endif
 
 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
 #error No its not
diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index f946f79..ceb81ce 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -36,6 +36,23 @@
 #define AUDIO_CAP "oss"
 #include "audio_int.h"
 
+/* http://www.df.lth.se/~john_e/gems/gem002d.html */
+/* http://www.multi-platforms.com/Tips/PopCount.htm */
+uint32_t popcount (uint32_t u)
+{
+    u = ((u&0x55555555) + ((u>>1)&0x55555555));
+    u = ((u&0x33333333) + ((u>>2)&0x33333333));
+    u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
+    u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
+    u = ( u&0x0000ffff) + (u>>16);
+    return u;
+}
+
+inline uint32_t lsbindex (uint32_t u)
+{
+    return popcount ((u&-u)-1);
+}
+
 typedef struct OSSVoiceOut {
     HWVoiceOut hw;
     void *pcm_buf;