Question

Below is my c++ code and my config file.

when I run spawn-fcgi -a120.0.0.1 -p9000 -n ./rtb.o

I get this error

spawn-fcgi: exec failed: Exec format error

Here is my c++ code that I complied as rtb.o

#include "fcgi_stdio.h"
#include <stdlib.h>
using namespace std;
int main()
  {
      int count = 1;
      while(FCGI_Accept() >= 0)
          printf("Content-type: text/html\r\n"
                 "\r\n"
                 "<title>FastCGI Hello!</title>"
                 "<h1>FastCGI Hello!</h1>"
                 "Request number %d running on host \n",
                  ++count);
      return 0;
  }

So, what did I do wrong?

Answer 1

You’re attempting to run a program called rtb.o? Is this an object file or an executable? You might want to show us how you compile your program. If you’re doing something like

g++ -c rtb.cpp

Then you will get an object file and you need to link it to get a working program. Try to run it from your terminal using ./rtb.o. If it prints the same message, then you’ve got an object file and need to try something like this instead:

g++ -o rtb rtb.cpp

Remember to add a reference to the FCGI library when you link (use the -l option).