RE: HowTo Cross Compile GCC on x86 Host for PowerPC Target

["Dave Korn" <dave dot korn at artimi dot com>]

Jeff Stevens wrote:
> Is there a HowTo out there on how to cross compile GCC
> to run on another platform?  I have an x86 host
> running linux, and an embedded PowerPC 440SP target
> running linux.  I would like to compile GCC to run on
> the target but am having some difficulties.  I have
> compiled the cross compiler fine, but when I try to
> compile a native compiler, it acts just like the cross
> compiler (runs on the host and not the target).  All I

  *All* compilers "run on the host"; the term "host" is defined as "the
machine on which the compiler runs".  The target is the machine on which the
_generated_ code runs.  So for a native compiler, host==target, and for a
cross-compiler, host!=target.

> did was re-run gcc configure and "make all install".
> Here is the configuration I ran:
> 
> ../../source/gcc-3.4.4/configure
> --target=powerpc-linux --host=powerpc-linux
> --prefix=/opt/luan2/toolchain/bin --enable-shared
> --enable-threads --enable-languages=c

  If you want a native compiler, you would want to have an x86 target where
you've written powerpc-linux.

  Even better, to get a native compiler, just don't specify --target or --host
at all; configure will assume by default that you want a native compiler, work
out what machine it thinks you're running on, and set up everything just right
for you, automatically!
 
> I'm obviously missing something, but can't seem to
> find anything on the internet that explains
> cross-compiling gcc for another target.

  Check the cross-gcc mailing list http://sourceware.org/ml/crossgcc/, and Dan
Kegel's crosstool http://kegel.com/crosstool/.


    cheers,
      DaveK
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