Add extern "C" to some headers

Alc/alstring.h

@@ -6,6 +6,10 @@
 #include "vector.h"
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef char al_string_char_type;
 TYPEDEF_VECTOR(al_string_char_type, al_string)
 TYPEDEF_VECTOR(al_string, vector_al_string)
@@ -47,4 +51,8 @@ void alstr_copy_wrange(al_string *str, const wchar_t *from, const wchar_t *to);
 void alstr_append_wrange(al_string *str, const wchar_t *from, const wchar_t *to);
 #endif
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* ALSTRING_H */

Alc/backends/base.h

@@ -5,6 +5,10 @@
 #include "threads.h"
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct ClockLatency {
     ALint64 ClockTime;
     ALint64 Latency;
@@ -157,4 +161,8 @@ inline void ALCdevice_Lock(ALCdevice *device)
 inline void ALCdevice_Unlock(ALCdevice *device)
 { V0(device->Backend,unlock)(); }
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* AL_BACKENDS_BASE_H */

Alc/compat.h

@@ -3,6 +3,10 @@
 
 #include "alstring.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #ifdef _WIN32
 
 #define WIN32_LEAN_AND_MEAN
@@ -54,4 +58,8 @@ void *GetSymbol(void *handle, const char *name);
 void *Android_GetJNIEnv(void);
 #endif
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* AL_COMPAT_H */

Alc/logging.h

@@ -10,6 +10,10 @@
 #define DECL_FORMAT(x, y, z)
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 extern FILE *LogFile;
 
 #if defined(__GNUC__) && !defined(_WIN32)
@@ -58,4 +62,8 @@ extern enum LogLevel LogLevel;
     LOG_ANDROID(ANDROID_LOG_ERROR, __VA_ARGS__);                              \
 } while(0)
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* LOGGING_H */

Alc/ringbuffer.h

@@ -4,6 +4,10 @@
 #include <stddef.h>
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef struct ll_ringbuffer ll_ringbuffer_t;
 typedef struct ll_ringbuffer_data {
     char *buf;
@@ -66,4 +70,8 @@ size_t ll_ringbuffer_write(ll_ringbuffer_t *rb, const char *src, size_t cnt);
 /** Advance the write pointer `cnt' places. */
 void ll_ringbuffer_write_advance(ll_ringbuffer_t *rb, size_t cnt);
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* RINGBUFFER_H */

OpenAL32/Include/alMain.h

@@ -49,19 +49,6 @@
 #define UNLIKELY(x) (!!(x))
 #endif
 
-typedef ALint64SOFT ALint64;
-typedef ALuint64SOFT ALuint64;
-
-#ifndef U64
-#if defined(_MSC_VER)
-#define U64(x) ((ALuint64)(x##ui64))
-#elif SIZEOF_LONG == 8
-#define U64(x) ((ALuint64)(x##ul))
-#elif SIZEOF_LONG_LONG == 8
-#define U64(x) ((ALuint64)(x##ull))
-#endif
-#endif
-
 #ifndef UINT64_MAX
 #define UINT64_MAX U64(18446744073709551615)
 #endif
@@ -85,6 +72,23 @@ typedef ALuint64SOFT ALuint64;
 #define FAM_SIZE(T, M, N)  (offsetof(T, M) + sizeof(((T*)NULL)->M[0])*(N))
 
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef ALint64SOFT ALint64;
+typedef ALuint64SOFT ALuint64;
+
+#ifndef U64
+#if defined(_MSC_VER)
+#define U64(x) ((ALuint64)(x##ui64))
+#elif SIZEOF_LONG == 8
+#define U64(x) ((ALuint64)(x##ul))
+#elif SIZEOF_LONG_LONG == 8
+#define U64(x) ((ALuint64)(x##ull))
+#endif
+#endif
+
 /* Define a CTZ64 macro (count trailing zeros, for 64-bit integers). The result
  * is *UNDEFINED* if the value is 0.
  */
@@ -153,10 +157,6 @@ static const union {
 #define COUNTOF(x) (sizeof(x) / sizeof(0[x]))
 
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 struct ll_ringbuffer;
 struct Hrtf;
 struct HrtfEntry;