Red Hat ENTERPRISE LINUX 3 - DEVELOPER TOOLS GUIDE Guide de l'utilisateur télécharger pdf (Page 55)

Running GCC

}

The following procedure illustrates the compilation process for C++ in its most basic form.

Procedure 4.2. Compiling a 'Hello World' C++ Program

1. Compile hello.cc into an executable with:

g++ hello.cc -o hello

Ensure that the resulting binary hello is in the same directory as hello.cc.

2. Run the hello binary, i.e. hello.

4.1.6.3. Simple Multi-File Usage

To use basic compilation involving multiple files or object files, start with the following two source files:

one.c

#include <stdio.h>

void hello()

{

printf("Hello world!\n");

}

two.c

extern void hello();

int main()

{

hello();

return 0;

}

The following procedure illustrates a simple, multi-file compilation process in its most basic form.

Procedure 4.3. Compiling a Program with Muiltiple Source Files

1. Compile one.c into an executable with:

gcc -c one.c -o one.o

Ensure that the resulting binary one.o is in the same directory as one.c.

2. Compile two.c into an executable with:

gcc -c two.c -o two.o

Ensure that the resulting binary two.o is in the same directory as two.c.

3. Compile the two object files one.o and two.o into a single executable with:

gcc one.o two.o -o hello

Ensure that the resulting binary hello is in the same directory as one.o and two.o.

4. Run the hello binary, i.e. hello.

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Red Hat ENTERPRISE LINUX 3 - DEVELOPER TOOLS GUIDE Guide de l'utilisateur Page 55