Not so long ago I’ve installed Debian and configured it with my friend’s help.
Yesterday I have downloaded GCC 4.4 and I created a simple program to test it out.
This is the code:
#include <stdio.h>
int main () {
int result;
printf ("Hello Wor... Linux! This is my %dst program compiled in Debian.\nHow many is 2+2?\n", 1);
scanf ("%d", &result);
while (result!=4) {
printf ("Oh no! You're not going anywhere until you type the correct result! 2+2 is?\n");
scanf ("%d", &result);
}
printf ("Congrats!\n");
return 0;
}
I’ve compiled it by typing gcc-4.4 myfile.c in bash. Then I’ve tried to run the resulting binary file and it worked just as I wanted it to. Then I’ve sent the binary file to my friend to test it on his PC also. When he tried to run it, he received a segmentation fault message and the program didn’t work.
He also uses Debian and his kernel’s version is very similar to mine (2.6.32-5-686). The only difference is that his kernel is an amd-64 one (he owns a 64-bit processor, while mine is 32-bit).
Why is this happening? Does it mean that 64-bit Linux users will be unable to run my 32-bit programs? If so, can I compile it in a way which will let them to run it?
Please note that I’m not really experienced with Linux.
he may need a chroot for it.
should work for most cases.
see “Using an IA32 chroot to run 32bit applications” http://alioth.debian.org/docman/view.php/30192/21/debian-amd64-howto.html#id292205