Makefile syntax problems

Makefile syntax-General Linux technology-Linux programming and kernel information. For more information, see the following section. Below is a simple driver for printing characters
# Include
# Include

MODULE_LICENSE ("Dual BSD/GPL ");

Static int hello_init (void)
{
Printk ("hello, linux \ n ");
}

Static void hello_exit (void)
{
Printk ("goodbye linux \ n ");
}

Module_init (hello_init );
Module_exit (hello_exit );

Its Makefile is

1 EXEC = hello
2 OBJS = hello. o
3 SRC = hello. c

4 INCLUDE =/usr/src/linux-2.6.10/include
5 CC = arm-linux-gcc
6 LD = arm-linux-ld
7 MODCFLAGS =-O2-Wall-d1_kernel _-DMODULE-I $ (INCLUDE)-march = armv4t-c-o
8 LDFLAGS =-r

9 all: $ (EXEC)

10 $ (EXEC): $ (OBJS)
$ (LD) $ (LDFLAGS)-o $ @ $ (OBJS)

11%. o: %. c
$ (CC) $ (MODCFLAGS)-mapcs-c $ <-o $ @

12 clean:
-Rm-f $ (EXEC) *. o *~ Core

Question 1:
In row 3, what do the parameters-d1_kernel _-DMODULE and-march = armv4t mean?
Question 2:
What does the parameter-r of row 3 mean?
Question 3:
What does the parameter-mapcs in line 3 mean?
Question 4:
Line 1 parameters *~ And core
Question 5:
What should I do if I want to query the parameters related to arm-linux-gcc? # Info arm-linux-gcc. I tried it and it seems that I have no clue at all.
What if I want to query the Makefile related syntax?