lodepng-gumboot.patch

diff --git a/lodepng/lodepng.cpp b/lodepng/lodepng.cpp
index bf237df..6af8ee8 100644
--- a/lodepng/lodepng.cpp
+++ b/lodepng/lodepng.cpp
@@ -30,6 +30,8 @@ Rename this file to lodepng.cpp to use it for C++, or to lodepng.c to use it for
 
 #include "lodepng.h"
 
+#ifndef GUMBOOT
+
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -39,6 +41,16 @@ Rename this file to lodepng.cpp to use it for C++, or to lodepng.c to use it for
 #pragma warning( disable : 4996 ) /*VS does not like fopen, but fopen_s is not standard C so unusable here*/
 #endif /*_MSC_VER */
 
+#else
+
+#include "string.h"
+#include "malloc.h"
+
+// emulate abs()
+#define abs(a) ((a) < 0 ? (-(a)) : (a))
+
+#endif // GUMBOOT
+
 const char* LODEPNG_VERSION_STRING = "20161127";
 
 /*
diff --git a/lodepng/lodepng.h b/lodepng/lodepng.h
index 8c634d2..527a3d6 100644
--- a/lodepng/lodepng.h
+++ b/lodepng/lodepng.h
@@ -26,7 +26,11 @@ freely, subject to the following restrictions:
 #ifndef LODEPNG_H
 #define LODEPNG_H
 
+#ifdef GUMBOOT
+#include <stddef.h> /*for size_t*/
+#else
 #include <string.h> /*for size_t*/
+#endif
 
 extern const char* LODEPNG_VERSION_STRING;