The SSE2 detection and enabling could potentially cause
problems for binary distributions of Python in situations
where the build machine has SSE2 but the target machine
does not.

Therefore, don't enable SSE2 instructions automatically on x86.
diff --git a/Python/pymath.c b/Python/pymath.c
index a5c0dd9..db2920c 100644
--- a/Python/pymath.c
+++ b/Python/pymath.c
@@ -13,8 +13,7 @@
 }
 #endif
 
-#ifdef USING_X87_FPU
-#  ifdef HAVE_GCC_ASM_FOR_X87
+#ifdef HAVE_GCC_ASM_FOR_X87
 
 /* inline assembly for getting and setting the 387 FPU control word on
    gcc/x86 */
@@ -29,9 +28,6 @@
     __asm__ __volatile__ ("fldcw %0" : : "m" (cw));
 }
 
-#  else
-#    error "Unable to get and set x87 control word"
-#  endif
 #endif