fix windows build

Makefile

@@ -9,11 +9,11 @@ endif
 debug = true
 
 ifeq ($(target),windows)
-	CC=x86_64-w64-mingw32-gcc
-	SDL_INCLUDE = -Dmain=SDL_main -Lsdllib -lSDL2main -lSDL2main -lSDL2 -lmingw32 -lSDL2main -lSDL2 -mwindows -lSDL2_mixer -Wl,-static -lpthread -lm
+	CC=x86_64-w64-mingw32-gcc -DWIN32
+	SDL_INCLUDE = -Dmain=SDL_main -Lsdllib -lSDL2main -lSDL2main -lSDL2_mixer -lSDL2_ttf -lSDL2 -lmingw32 -lSDL2main -lSDL2 -mwindows  -Wl,-static -lpthread -lm
 	CCFLAGS=$(SDL_INCLUDE) -O3
 else
-	CC=gcc
+	CC=gcc -D__linux__
 	SDL_INCLUDE= -lSDL2 -lm -lSDL2_ttf -lSDL2_mixer
 	CCFLAGS=$(SDL_INCLUDE) -O3
 endif

src/game.c

@@ -85,7 +85,11 @@ int long_comparator(const void *a, const void *b, void *non) {
 }
 
 void sort_times(void) {
+#ifdef __linux__
     qsort_r(save_times_lst.times, save_times_lst.size, sizeof(long), long_comparator, NULL);
+#elif WIN32
+    qsort_s(save_times_lst.times, save_times_lst.size, sizeof(long), long_comparator, NULL);
+#endif
 }
 
 long get_best_time(void) {
@@ -1009,6 +1013,7 @@ void add_rope(int mouse_x, int mouse_y) {
     struct physics_collection s;
     bool found = false;
     double len = MAX_ROPE_GRAB_LEN;
+    double t, u;
     for (int j = 0; j < (floor.numItems + ceil.numItems - 2); j++) {
         if (j >= floor.numItems - 1) {
             s = ceil;
@@ -1029,10 +1034,10 @@ void add_rope(int mouse_x, int mouse_y) {
         double x4 = wall_e.x;
         double y4 = wall_e.y;
 
-        double t = ((x1 - x3)*(y3 - y4) - (y1 - y3)*(x3-x4))
+        t = ((x1 - x3)*(y3 - y4) - (y1 - y3)*(x3-x4))
             / ((x1-x2)*(y3-y4) - (y1 - y2)*(x3-x4));
 
-        double u = ((x1 - x2)*(y1 - y3) - (y1 - y2)*(x1 - x3))
+        u = ((x1 - x2)*(y1 - y3) - (y1 - y2)*(x1 - x3))
             / ((x1 - x2)*(y3 - y4) - (y1 - y2)*(x3 - x4));
 
         if (t < 0 || u > 0 || t > 1 || u < -1) {

src/main.c

@@ -144,7 +144,11 @@ int game(void) {
 
 int main (int argc, char** argv)  {
 
+#ifdef __linux__
     mkdirat(AT_FDCWD, "saves", 0777);
+#elif WIN32
+    mkdir("saves");
+#endif
 
     game();
     SDL_Quit();