Unbreak my heart ^W the build

src/fs_posix.c

@@ -202,6 +202,47 @@ static bool p_mkdir(const char *path) {
   return mkdir(path, 0775) == 0;
 }
 
+#else
+
+static int p_stat(const char *path, size_t *size, time_t *mtime) {
+  (void) path, (void) size, (void) mtime;
+  return 0;
+}
+static void p_list(const char *path, void (*fn)(const char *, void *),
+                   void *userdata) {
+  (void) path, (void) fn, (void) userdata;
+}
+static void *p_open(const char *path, int flags) {
+  (void) path, (void) flags;
+  return NULL;
+}
+static void p_close(void *fp) {
+  (void) fp;
+}
+static size_t p_read(void *fd, void *buf, size_t len) {
+  (void) fd, (void) buf, (void) len;
+  return 0;
+}
+static size_t p_write(void *fd, const void *buf, size_t len) {
+  (void) fd, (void) buf, (void) len;
+  return 0;
+}
+static size_t p_seek(void *fd, size_t offset) {
+  (void) fd, (void) offset;
+  return (size_t) ~0;
+}
+static bool p_rename(const char *from, const char *to) {
+  (void) from, (void) to;
+  return false;
+}
+static bool p_remove(const char *path) {
+  (void) path;
+  return false;
+}
+static bool p_mkdir(const char *path) {
+  (void) path;
+  return false;
+}
 #endif
 
 struct mg_fs mg_fs_posix = {p_stat,  p_list, p_open,   p_close,  p_read,