N00B. If I compile a simple Hello World! program on a 64bit linux, will it work on a 32bit linux? (I'm using gcc).
#include <stdio.h>
int main(void)
{
printf("Hello World!");
return 0;
}
raigs -1 Light Poster
Ancient Dragon 5,243 Achieved Level 70 Team Colleague Featured Poster
>> If I compile a simple Hello World! program on a 64bit linux, will it work on a 32bit linux?
Depends on the flags you give the compiler. The default is to produce 32-bit code, but you can tell it to produce 64-bit code. Just because you are running a 64-bit operating system doesn't mean the compiler will automatically produce 64-bit code.
gerard4143 371 Nearly a Posting Maven
If you installed a 64 bit version of Linux on a 64 bit box, then the default compiler(gcc) will produce 64 bit code...that is unless you set the appro. switches telling it to produce 32 bit code...
ankur_ 24 Light Poster
If you want to run the program with the 32 bit compiler include -m32 in your compiler option
raigs -1 Light Poster
If you want to run the program with the 32 bit compiler include -m32 in your compiler option
1. Can I compile a single program than runs on both 32 and 64?
2. I have a 64bit Debian Linux and tried to compile using -m32 but returned error. I'm probably missing some package. Any ideas?
raigs@mycomputer:~/Desktop$ gcc -m32 pig.c
In file included from /usr/include/features.h:361,
from /usr/include/stdio.h:28,
from pig.c:1:
/usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory
raigs@mycomputer:~/Desktop$ ankur_ 24 Light Poster
1. Can I compile a single program than runs on both 32 and 64?
2. I have a 64bit Debian Linux and tried to compile using -m32 but returned error. I'm probably missing some package. Any ideas?
raigs@mycomputer:~/Desktop$ gcc -m32 pig.c In file included from /usr/include/features.h:361, from /usr/include/stdio.h:28, from pig.c:1: /usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory raigs@mycomputer:~/Desktop$
There are diffrent compiler options for 32 bit and 64 bit in diffrent platforms.
You can get more detail about that in the below link.
http://www.openlinksw.com/dataspace/dav/wiki/Main/VOSMake
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