Re: [gentoo-user] OT - Confusion with cross-compiling

[Richard Fish]

On 11/23/05, Michael Sullivan <michael@××××××××××××.com> wrote:
> I wanted to be able to cross compile for one of the machines on my
> network.  I've been following the cross-compilation guide at
> http://dev.gentoo.org/~vapier/CROSS-COMPILE-HOWTO  I've been following
> the guide exactly.  The problem is at this stage in the tutorial:
>
> USE=nocxx emerge cross-hppa2.0-unknown-linux-gnu/gcc
>
> I want to cross-compile for an i586, so in following the guide I've
> changed every occurence of "hppa2.0-unknown-linux-gnu" to
> "i586-pc-linux-gnu".  binutils emerged just fine for the
> cross-compilation environment, but I'm having trouble emerging gcc (Step
> 5).  I've issued:
>
>  USE=nocxx emerge cross-i586-pc-linux-gnu/gcc
>
> and it builds for awhile and then it errors:
>
> /var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/gcc.c: In function
> `retry_ice':
> /var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/gcc.c:5897: warning: `fd'
> might be used uninitialized in this function
> make[1]: *** [gcc.o] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make[1]: Leaving directory `/var/tmp/portage/gcc-3.3.6/work/build/gcc'
> make: *** [all-gcc] Error 2
>
> !!! ERROR: cross-i586-pc-linux-gnu/gcc-3.3.6 failed.
> !!! Function gcc_do_make, Line 1311, Exitcode 2
> !!! emake failed with all
> !!! If you need support, post the topmost build error, NOT this status
> message.
>
> The problem is I can't FIND the error.  The top of what I've pasted
> above is the only thing that I could see that could potentially cause an
> error.

The error is:

gcc -c    -O2 -pipe -DIN_GCC -DCROSS_COMPILE  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic
-Wno-long-long   -DHAVE_CONFIG_H    -I. -I.
-I/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc
-I/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/.
-I/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/config
-I/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/../include
/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/cppspec.c -o cppspec.o
In file included from /var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/gcc.c:87:
/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/pie-ssp-chain.h:74:2:
warning: suggest hiding #error from traditional C with an indented #
/var/tmp/portage/gcc-3.3.6/work/gcc-3.3.6/gcc/pie-ssp-chain.h:74:2:
#error we need ld w/ -pie support

So, it looks like a problem with the binutils package (since ld is
part of binutils).  I haven't tried cross-compiling with gentoo, so I
don't know how to fix this unfortunately...but at least now you know
what to google for!

-Richard

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