On Wed, 12 Jan 2011 18:33:50 +0100 Philippe Auphelle wrote: > Hi, > > Running a 2.6.35 kernel, and gcc 4.4.5, I'm trying to build both an > x86 (32) and an x86_64 external (out of tree) module from my x86 > (32-bit) dev machine. > > I have tried various tricks, such as using ARCH=X86_64 when running > make, but to no avail so far: Whatever I do, V=1 shows kbuild invoking > gcc with -m32 and ld with elf_i386. > > I have googled around for a few hours without finding a solution to > the problem. > Since the x86 arch is unified and gcc is able to gen (and link) x86_64 > targets, it looks like this could be done, and I must be missing > something. > Could anyone point me to the right direction? AFAIK, it's just a matter of having a 64-bit compiler available. Most 32-bit distros that I know of just have a 32-bit compiler available, so you would need a "cross-compiler" for 64-bit code generation on a 32-bit host, whereas on a 64-bit host, gcc can build 32-bit code or 64-bit code. But I'm no expert on this. --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
