Compiles now also in Windows

debug.cc

@@ -6,7 +6,11 @@
 #include <string>
 #include <time.h>
 #include <fcntl.h>
-#include <execinfo.h>
+#ifdef BUILD_WINDOWS
+# include <backtrace.h>
+#else
+# include <execinfo.h>
+#endif
 
 #include "debug.h"
 #include "convert.h"
@@ -148,6 +152,7 @@ void debug_drawraw(unsigned char *data, int pixfmt, int w, int h) {
 
 #define BT_BUF_SIZE 100
 void debug_backtrace () {
+#ifndef BUILD_WINDOWS
 	unsigned int nptrs;
 	void *buffer[BT_BUF_SIZE];
 	char **strings;
@@ -167,5 +172,6 @@ void debug_backtrace () {
 	for (size_t j = 0; j < nptrs; j++)
 		printf("%s\n", strings[j]);
 	free(strings);
+#endif
 };