CODEWITHSUNDEEP
clinux64-bit32-bit
bsteo
bsteo

Reputation: 1779

Linux Compile simple program to run on both x86 and x64

How can I compile it on a 32-bit system so it can run as backward compatible under a 64-bit system? I know it can be done because Adobe, Dropbox and other companies have such binaries. How should I link them, dynamically, statically? Static only some libraries and other dynamic?

I'm talking about a simple code like:

int main() {
  printf("Hello world!\n");
}

Thank you!

Upvotes: 0

Views: 711

Answers (2)

rubenvb
rubenvb

Reputation: 76519

Typically, you compile either both versions, or compile only a 32-bit version, and require that the user has the 32-bit libraries installed.

You can tell GCC to compile for 32-bit by adding -m32 to every command. Note that this requires a multilib compiler, and you need to have the necessary lib32* files installed.

Upvotes: 2

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 798626

Normally. Then install the 32-bit libraries on the 64-bit system.

Upvotes: 3

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