upgrade Makefile: added OS diagnosting, new target: dsync

Author: Centrix14

Makefile

@@ -1,15 +1,27 @@
 ct = gcc
 
-dbg_flags = -Wall -O0 -g -o
+dbg_flags = -o
 flags = -o
 
 res = fd
 files = main.c data/list.c callbacks.c figure.c click_handle.c draw.c binding.c geometry.c color.c fd_format.c
 gtk = `pkg-config --static --libs --cflags "gtk+-3.0"`
 libs = -lm
+destr = destr
+
+ifeq ($(OS),Windows_NT)
+	flags = -mwindows -o
+else
+	flags = -o
+endif
+
+dbg_flags = -Wall -O0 -g $(flags)
 
 all:
 	$(ct) $(dbg_flags) $(res) $(files) $(libs) $(gtk)
 
 rel:
-	$(ct) $(flags) $(fd) $(files) $(libs) $(gtk)
+	$(ct) $(flags) $(res) $(files) $(libs) $(gtk)
+
+dsync:
+	cp $(res) $(destr)/$(res)