Remove reliance on system stdint.h header

int.h

@@ -0,0 +1,23 @@
+#if defined(__x86_64__) || defined(__aarch64__)
+#define __WORDSIZE 64
+#elif defined(__mips__)
+#define __WORDSIZE 32
+#endif
+
+typedef unsigned char   uint8_t;
+typedef unsigned short  uint16_t;
+typedef unsigned int    uint32_t;
+typedef unsigned long   uint64_t;
+
+typedef char   int8_t;
+typedef short  int16_t;
+typedef int    int32_t;
+typedef long   int64_t;
+
+#if __WORDSIZE == 64
+typedef long          intptr_t;
+typedef unsigned long uintptr_t;
+#elif __WORDSIZE == 32
+typedef int          intptr_t;
+typedef unsigned int uintptr_t;
+#endif