mtxquat fixes

configure.py

@@ -210,6 +210,12 @@ cflags_runtime = [
     "-inline auto,deferred",
 ]
 
+# Dolphin library flags
+cflags_dolphin = [
+    *cflags_base,
+    "-fp_contract off",
+]
+
 # Metrowerks library flags
 cflags_msl = [
     *cflags_base,
@@ -304,7 +310,7 @@ def DolphinLib(lib_name, objects):
     return {
         "lib": lib_name,
         "mw_version": "GC/1.2.5n",
-        "cflags": cflags_base,
+        "cflags": cflags_dolphin,
         "host": False,
         "objects": objects,
     }

src/dolphin/mtx/quat.c

@@ -1,5 +1,9 @@
 #include "dolphin/mtx.h"
-#include "math.h"
+
+float acosf(float x);
+
+float sinf(float x);
+float cosf(float x);
 
 void PSQUATMultiply(register const Quaternion *a, register const Quaternion *b, register Quaternion *ab)
 {