compiling 32-bit on 64-bit

mk27 · 12-26-2008, 02:28 PM

I just installed FC10/64 and have come to the conclusion that I have to be able to compile 32-bit apps, which means I need another gcc.

What's the best method? Should I build a cross-compiler or just install the i386 version?

pixellany · 12-26-2008, 02:53 PM

a quick glance at one of the GCC mirrors tells me that there is no distinction between 32-bit and 64-bit GCC. Have you seen tow different versions.

I would have assumed that the compiled code is controlled by how the source is configured, by flags passed to the compiler, or something like that.

No first-hand knowledge, so take with salt.....

makuyl · 12-26-2008, 03:12 PM

Should be as simple as i.e. gcc -m32 -o output source.c

forrestt · 12-26-2008, 03:14 PM

You can compile 32 bit apps from the 64 bit version by using the -m32 flag.

HTH

Forrest

mk27 · 12-26-2008, 03:18 PM

Quote:

Originally Posted by makuyl

Should be as simple as i.e. gcc -m32 -o output source.c

Yeah, you're right. I just don't like dealing with makefiles but you can add:

Code:

EXTRA_CFLAGS = -m32

My problem is finding old libraries for a 64-bit hack on slmodem, which I think now requires some headers last found in compat-gcc-34.

Sorry for all the fuss. sigh