Use stdlib.h defined types uint8_t, uint16_t, uint32_t and uint64_t for compatibility with musl libc --- include/pcm.h 2015-02-26 13:34:52.000000000 +0100 +++ include/pcm.h 2015-07-28 13:44:32.423885625 +0200 @@ -29,6 +29,8 @@ #ifndef __ALSA_PCM_H #define __ALSA_PCM_H +#include <stdint.h> /* uint_ types */ + #ifdef __cplusplus extern "C" { #endif