--- src/intsect.cpp.orig 2011-05-02 13:55:06.000000000 +0200 +++ src/intsect.cpp 2012-09-10 22:33:43.000000000 +0200 @@ -13,6 +13,7 @@ #endif #include +#include void pushback(int32_t x1,int32_t y1,int32_t &x2,int32_t &y2, int32_t xp1, int32_t yp1, int32_t xp2, int32_t yp2, int xdir, int ydir, int inside)