add recent minilibx linux as submodule

libs/minilibx_opengl_20191021/Makefile

@@ -0,0 +1,24 @@
+#
+#
+
+NOM=libmlx.a
+SRC= mlx_shaders.c mlx_new_window.m mlx_init_loop.m mlx_new_image.m mlx_xpm.c mlx_int_str_to_wordtab.c
+SRC+= mlx_png.c mlx_mouse.m
+OBJ1=$(SRC:.c=.o)
+OBJ=$(OBJ1:.m=.o)
+CFLAGS+=-O2
+
+# add to match string put with X11 in size and position
+CFLAGS+= -DSTRINGPUTX11
+
+all: $(NOM)
+
+$(NOM):	$(OBJ)
+	ar -r $(NOM) $(OBJ)
+	ranlib $(NOM)
+
+clean:
+	rm -f $(NOM) $(OBJ) *~
+	rm -f mlx_app
+
+re: clean all