diff -urp musepack_src_r475.orig/common/fastmath.c musepack_src_r475/common/fastmath.c
--- common/fastmath.c	2007-06-09 09:43:34.000000000 -0500
+++ common/fastmath.c	2020-09-14 10:39:01.942623458 -0500
@@ -21,10 +21,10 @@
 
 #ifdef FAST_MATH
 
-const float  tabatan2   [ 2*TABSTEP+1] [2];
-const float  tabcos     [26*TABSTEP+1] [2];
-const float  tabsqrt_ex [256];
-const float  tabsqrt_m  [   TABSTEP+1] [2];
+float  tabatan2   [ 2*TABSTEP+1] [2];
+float  tabcos     [26*TABSTEP+1] [2];
+float  tabsqrt_ex [256];
+float  tabsqrt_m  [   TABSTEP+1] [2];
 
 
 void   Init_FastMath ( void )
diff -urp musepack_src_r475.orig/include/mpc/mpcmath.h musepack_src_r475/include/mpc/mpcmath.h
--- include/mpc/mpcmath.h	2009-07-31 07:37:44.000000000 -0500
+++ include/mpc/mpcmath.h	2020-09-14 10:44:15.624279644 -0500
@@ -87,10 +87,10 @@ static mpc_inline mpc_int32_t mpc_lrintf
 # define IFLOORF(x)   my_ifloor ((float)(x))
 
 void   Init_FastMath ( void );
-extern const float  tabatan2   [] [2];
-extern const float  tabcos     [] [2];
-extern const float  tabsqrt_ex [];
-extern const float  tabsqrt_m  [] [2];
+extern float  tabatan2   [] [2];
+extern float  tabcos     [] [2];
+extern float  tabsqrt_ex [];
+extern float  tabsqrt_m  [] [2];
 
 static mpc_inline float my_atan2 ( float x, float y )
 {