On Thu, 21 May 2009, [email protected] wrote:
How do I compile the system binutils (contrib/binutils) as i386 -> x86_64
cross utils? That is, binutils that will run on an i386 host but will
produce x86_64 binaries?
I'm trying to produce a bootstrapping compiler for a port and need to get
these working. I've spent a while reading Makefiles but would rather get
information from someone who actually knows rather than waste *another* week
on this stuff.
I'd rather not compile the entire world if it can be avoided.
Not really my area, but if you haven't found "make toolchain" and "make
buildenv" then you might want to take a look. Typically these will be
combined with TARGET_ARCH=foo, and in your case foo is 'amd64'. The former
builds the toolchain required for the architecture, and the latter creates a
shell environment with paths appropriately munged and environments
appropriately set to cross-compile using that chain. Normally the toolchain
step is part of our integrated buildworld/buildkernel/etc process, but you can
also use it for other things with buildenv.
Robert N M Watson
Computer Laboratory
University of Cambridge
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