Ex. 1

• Copy the following archive into your c151 folder:
  ~danav/temp/c151/phil.tar.gz
  Decompress this file. You should find a folder called phils. Go to this folder.
• Identify the source files and the header files in this folder. Compile each of the source files (.cc) one by one to obtain the objects. You will need the command g++ with the option -c for that.
  
• Link all the objects together and create and executable called phils. For this part you'll need to like the following libraries in your program:
  libpthread.a
  Run the executable to test the program. The program will ask for a number of iterations. Enter something small, like 10. The program does a small simulation and outputs some statistics.
• Note that this folder contains a file named Makefile. Identify some of the units in this Makefile (for yourself to make sure you understand them)). Find the entry called clean in this Makefile. Invoke this entry with the make command. Make sure that your executable and your objects have been deleted.
• Compile the project again using the command make. Make sure the objects have been recreated as well as the executable. Run the program again to see if the result is the same.
• Using whatever editor you want, add an entry to the Makefile called run. List no dependencies for this entry and list just one command which should contain the name of the executable. Run the program again using the entry in the Makefile that you have just created.
• Save the content of your terminal so far into a file called hw5.txt. You'll have to send it to me by email.

Ex. 2 Write a Makefile compiling the file sum_array.cc that you copied into your directory for lab3. This Makefile should contain the following entries:

• default - this entry should list sumar as a dependency and not invoke any other commands.
• sumar - this should list the file sum_array.cc as a dependency and call the compiling command seen in the lab 3. Note that since we only work with one file here, there's no need to create separate objects.
• clean - this should delete the executable.

Send me the Makefile by email, as well as the

Ex. 3 Answer the following question in the email with the homework submission: what does the following compilation command do? Exmplain all the elements of the command:

g++ main.o cube.o -I/usr/include/gl -L/usr/lib/gl -lglut -o cube

Send me: From the lab: the Makefile created in class. From the homework: the file hw5.txt from exercise 1, the Makefile from exercise 2, and the answer to the question at exercise 3.