2 files changed, 46 insertions, 5 deletions
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 849ce6e4..82877735 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -4,12 +4,14 @@
 #include <string.h>
 #include <stdio.h>
 
-#include "alu.h"
-
 #ifdef HAVE_FENV_H
 #include <fenv.h>
 #endif
 
+#include "AL/al.h"
+#include "AL/alc.h"
+#include "AL/alext.h"
+
 #ifdef _WIN32
 
 #ifndef _WIN32_WINNT
@@ -98,10 +100,8 @@ static inline void Sleep(ALuint t)
 #define max(x,y) (((x)>(y))?(x):(y))
 #endif
 
-#include "AL/al.h"
-#include "AL/alc.h"
-#include "AL/alext.h"
 #include "alListener.h"
+#include "alu.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h
index 7c6e95b7..9bbcc464 100644
--- a/OpenAL32/Include/alu.h
+++ b/OpenAL32/Include/alu.h
@@ -4,6 +4,47 @@
 #include "AL/al.h"
 #include "AL/alc.h"
 
+#ifdef HAVE_FLOAT_H
+#include <float.h>
+#endif
+
+#ifndef M_PI
+#define M_PI           3.14159265358979323846  /* pi */
+#define M_PI_2         1.57079632679489661923  /* pi/2 */
+#endif
+
+#ifdef HAVE_SQRTF
+#define aluSqrt(x) ((ALfloat)sqrtf((float)(x)))
+#else
+#define aluSqrt(x) ((ALfloat)sqrt((double)(x)))
+#endif
+
+#ifdef HAVE_ACOSF
+#define aluAcos(x) ((ALfloat)acosf((float)(x)))
+#else
+#define aluAcos(x) ((ALfloat)acos((double)(x)))
+#endif
+
+#ifdef HAVE_ATANF
+#define aluAtan(x) ((ALfloat)atanf((float)(x)))
+#else
+#define aluAtan(x) ((ALfloat)atan((double)(x)))
+#endif
+
+#ifdef HAVE_FABSF
+#define aluFabs(x) ((ALfloat)fabsf((float)(x)))
+#else
+#define aluFabs(x) ((ALfloat)fabs((double)(x)))
+#endif
+
+// fixes for mingw32.
+#if defined(max) && !defined(__max)
+#define __max max
+#endif
+#if defined(min) && !defined(__min)
+#define __min min
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif