gcc: Compile a 64-bit binary on 32-bit platform

Question

Is it possible to compile a 64-bit binary on a 32-bit Linux platform using gcc?

Solution 1

If you have a multilib GCC installed, it's as simple as adding -m64 to the commandline. The compiler should complain if it is not built with multilib support.

In order to link, you'll need all the 64-bit counterparts of the standard libraries. If your distro has a multilib GCC, these should also be in the repositories.

Solution 2

Go into Synaptic and search for gcc-multilib or g++-multilib and install the package, if the -m64 option does not work. Then, compile with the -m64 option.

Solution 3

You will need a gcc that will compile on 64 bits machines, eg x86_64-linux-gcc. Check your distribution package manager.

Solution 4

I think you could install gcc-multilib pachage first. And then compile your code using gcc -m64 yourcode, you cound check the ELF file using file yourprogram, the output should be like this yourprogram: ELF 64-bit LSB executable,.......

View more solutions