diff -bur podofo-0.10.4-o/3rdparty/fast_float.h podofo-0.10.4/3rdparty/fast_float.h
--- podofo-0.10.4-o/3rdparty/fast_float.h	2025-05-01 04:14:35.400725900 -0600
+++ podofo-0.10.4/3rdparty/fast_float.h	2025-05-01 04:16:16.975195800 -0600
@@ -305,9 +305,16 @@
                                                      uint64_t b) {
   value128 answer;
 #ifdef _M_ARM64
+#ifdef __GNUC__
+  __uint128_t mul = ((__uint128_t)a) * b;
+  answer.high = mul >> 64;
+  answer.low = mul;
+#else
   // ARM64 has native support for 64-bit multiplications, no need to emulate
   answer.high = __umulh(a, b);
   answer.low = a * b;
+#endif
+
 #elif defined(FASTFLOAT_32BIT) || (defined(_WIN64) && !defined(__clang__))
   answer.low = _umul128(a, b, &answer.high); // _umul128 not available on ARM64
 #elif defined(FASTFLOAT_64BIT)
