Running Compiled Program - "Invalid Argument"

Question

I have a simple Hello World C ++ program (main.cpp):

#include <iostream>

using namespace std;

int main ( void ) {
    cout << "Hello world" << endl;
    return ( 0 );
}

I will compile it through

g++ -Wall -pedantic -Wno-long-long -Werror -c main.cpp

then add permission to be executable

chmod +x main.o

and try to run it

./main.o

My console returns

-bash: ./main.o: Invalid argument

What am I pushing?

+3

Radek Simko Mar 12 '11 at 14:07

1 answer

Matteo Italia · Accepted Answer · 2011-03-12T14:10:16+0000

The parameter -ctells the compiler to simply compile the source file in an "object file" and not link it.

Without the link step, the object file you receive is not executable, but simply an intermediate step. What you probably want to do is

g++ -o main.x -Wall -pedantic -Wno-long-long -Werror main.cpp

main.x ( .x .o ); , chmod . (: "lint-style" - -Wextra; -O3)

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