Command make

[lmsiew2]

Hi,

I have a program consists of header files, .cpp, .c, a Makefile and need to include the problem instances file (.tim).

May i know how to compile and run them? From google, i have heard bout the command make. But i have no idea how. Please kindly help..

Thanks..

Regards,
limeng

[sanjeevt]

say you have yourfile.c
compile it
gcc -c yourfile.c
gcc -o yourfile yourfile.o

you can have make file like

Makefile

INCLUDES="-I."

yourfile: yourfile.o
   gcc -o yourfile yourfile.o

yourfile.o: yourfile.c
   gcc -c yourfile.c $(INCLUDES)

[lmsiew2]

Thanks a lot for replying, sanjeevt!

May i know is there any difference if i compile .cpp using gcc or g++?

When i type gcc -o myfile myfile.c, it caused an error saying Undefined reference to 'main'. I think it's because the main is in the .cpp file.

The "yourfile.c" of mine is the Timer.C file to get the program running time whereby the main is in the ts.cpp file. But somehow when i try to follow the steps u've mentioned on ts.cpp, errors occurs.

[sanjeevt]

gcc is supposed to be for c, and g++ for cpp
but gcc uses g++ internally for cpp programs

what errors you are getting.

do gcc -c timer.c
gcc -c myfile.c

it will create timer.o, which is object file then link it
gcc -o myfile myfile.o timer.o

[lmsiew2]

[lmsiew2@localhost timetabling.ts.ch.1]$ gcc -c Timer.C
[lmsiew2@localhost timetabling.ts.ch.1]$ gcc -c ts.cpp
ts.cpp:9: error: expected initializer before ‘*’ token
ts.cpp: In function ‘int main(int, char**)’:
ts.cpp:15: error: ‘outs’ was not declared in this scope
ts.cpp:15: error: ‘class Control’ has no member named ‘os’
ts.cpp:18: error: ‘class Control’ has no member named ‘getInputStream’

Below is the main file, ts.cpp:
#include "Control.h"
#include "Problem.h"
#include "Solution.h"
#include "Random.h"

#include <fstream>

Random* rnd;
extern ostream *outs;

int main( int argc, char** argv) {

// create a control object from the command line arguments
Control control(argc, argv);
outs = control.os;

// create a problem, control tells you what input file stream to use
Problem *problem = new Problem(control.getInputStream());

// create a Random object
rnd = new Random((unsigned) control.getSeed());

// run a number of tries, control knows how many tries there should be done
while( control.triesLeft())
{
// tell control we are starting a new try
control.beginTry();

// initialize a random solution
Solution *currentSolution = new Solution(problem, rnd);
currentSolution->RandomInitialSolution();
currentSolution->computeHcv();
if(currentSolution->hcv == 0)
{
control.setCurrentCost(currentSolution);
}else
{
control.setCurrentCost(currentSolution);
}

//apply tabu search with paramters given by control for a time limit and probability of each type of move to be performed
currentSolution->tabuSearch(control.getTimeLimit(), control.alfa, control.prob1, control.prob2);
currentSolution->computeHcv();
if(currentSolution->hcv == 0)
currentSolution->computeScv();

control.endTry(currentSolution);
delete currentSolution;
}

delete problem;
}