building nachos

My Operating system final project came out recently. The project is to build the nachos and modify some of the source code to let us understand more about operating system.

However, the GCC version to compile the nachos OS is pretty low(gcc 2.95). This is not good since my environment is ubuntu 10.10 and the gcc version under ubuntu is 4.45.(way too high for building nachos). Fortunately, the source code of the nachos  is not very long, so I modified some of the source code and Makefile to accomplished the building process.

Here is how I done it:
1. download the nachos source code.
    wget http://neuron.csie.ntust.edu.tw/homework/99/os/materials/nachos-4.0.tar.gz
2.download the mips cross compile tool
   wget http://neuron.csie.ntust.edu.tw/homework/99/os/materials/mips-decstation.linux-xgcc.gz
3.move the mips cross compile tool to the root directory
  sudo mv  mips-decstation.linux-xgcc.gz /
4.unzip the file
  sudo tar zxvf mips-decstation.linux-xgcc.gz /
5.unzip the nachos 
  tar zxvf nachos-4.0.tar.gz


It's time to build the source file.
  cd ${nachos directory}/code
  make
after doing this some problems pop up.
First
     /bin/sh: gmake: not found
solution:
    use any text editor to change the Makefile. 
    Change
    MAKE = gmake make
Second
   the second problem is the ../lib/sysdep.h
   the iostream.h not found
solution:
   simply change the <iostream.h> to <iostream> and add a new line using namespace std;
Third
   the reason of the third problem is the gcc version
solution:
   use text editor the modified the Makefile.common,
   modified the line called "CFLAGS =  -g -Wall -fwritable-strings ........"
Fourth
   the terminal will echo many errors.
solution:
   the solution is very simple, add this-> to the error variables or functions.

this is it, the nachos is finished, enjoyed.

Here is the video tutorial by Isaias

 
The original link:http://os-fime.blogspot.com/2011/08/how-to-compile-nachos.html

reference website:http://neuron.csie.ntust.edu.tw/homework/99/OS/homework/homework1/B9715017-hw1-1/#ubuntu10