Initial gcc Support (#568)

* Added GCC

src/racing/math_util.c

@@ -7,6 +7,7 @@
 #include <PR/rcp.h>
 #include "buffers/trig_tables.h"
 #include "math.h"
+#include "memory.h"
 
 #pragma intrinsic (sqrtf,fabs)
 

src/racing/math_util.h

@@ -22,6 +22,7 @@ s32  render_set_position(Mat4, s32);
 f32  func_802B51E8(Vec3f, Vec3f);
 s32  get_angle_between_two_vectors(Vec3f, Vec3f);
 u32  func_802B5258(Vec3f, Vec3s);
+void func_802B5794(Mat4, Vec3f, Vec3f);
 void vec3f_set(Vec3f, f32, f32, f32);
 void vec3s_set(Vec3s, s16, s16, s16);
 void *vec3f_copy_return(Vec3f, Vec3f);

src/racing/memory.c

@@ -26,6 +26,7 @@ struct UnkStruct_802B8CD4 D_802B8CD4[] = {
     0
 };
 s32 D_802B8CE4 = 0; // pad
+s32 memoryPadding[2];
 
 /**
  * @brief Returns the address of the next available memory location and updates the memory pointer