Building gcc-3.0 cross sompiler

[Mike Pelley]

Paul Flinders wrote:
> 
> I'm having difficulty building gcc-3.0 as a cross compiler
> hosted on RedHat (6.2 or 7.0) and targeted at linux-ppc
> 
> I've compiled binutils OK and installed into the target
> tree. Then building gcc fails as it tries to build libgcc2
> with the following error
> 
> /u/ptf/gcc-3.0/gcc/xgcc -B/u/ptf/gcc-3.0/gcc/
> -B/opt/gcc-ppc/powerpc-linux/bin/ -B/opt/gcc-ppc/powerpc-linux/lib/
> -isystem /opt/gcc-ppc/powerpc-linux/include -O2  -DCROSS_COMPILE
> -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes
> -Wmissing-prototypes -isystem ./include  -fPIC -g1  -DIN_LIBGCC2
> -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -I. -I. -I. -I./. -I./config
> -I./../include  -fPIC -mstrict-align -DL_muldi3 -c ./libgcc2.c -o
> libgcc/./_muldi3.o
> In file included from tm.h:6,
>                  from config/rs6000/xm-sysv4.h:35,
>                  from tconfig.h:3,
>                  from libgcc2.c:36:
> config/rs6000/linux.h:81:20: signal.h: No such file or directory
> config/rs6000/linux.h:82:26: sys/ucontext.h: No such file or directory
> make[2]: *** [libgcc/./_muldi3.o] Error 1
> make[2]: Leaving directory `/u/ptf/gcc-3.0/gcc'
> make[1]: *** [stmp-multilib] Error 2
> make[1]: Leaving directory `/u/ptf/gcc-3.0/gcc'
> make: *** [all-gcc] Error 2
> 
> It looks as though it wants signal.h and sys/ucontext.h from the C
> library.
> Obviously they aren't there because I can't build the cross C library
> until
> I've built the compiler.

You'll need to build a bootstrap cross compiler, use it to build your
cross C libraries, and then use those to build your full compiler.

The procedure is outlined nicely at
http://penguinppc.org/embedded/cross-compiling/ .

Mike.

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