Index: lib/builtins/fp_lib.h
===================================================================
--- lib/builtins/fp_lib.h
+++ lib/builtins/fp_lib.h
@@ -26,6 +26,18 @@
 #include <limits.h>
 #include "int_lib.h"
 
+// x86_64 FreeBSD 9.2 and older define fixed-width types incorrectly in
+// 32-bit mode.
+#if defined(__FreeBSD__) && defined(__i386__)
+#include <sys/param.h>
+# if __FreeBSD_version <= 902001  // v9.2
+#  define uint64_t unsigned long long
+#  define int64_t long long
+#  undef UINT64_C
+#  define UINT64_C(c) (c ## ULL)
+# endif
+#endif
+
 #if defined SINGLE_PRECISION
 
 typedef uint32_t rep_t;