help, build Cross GCC

[Momchil Velikov]

Wang Yong wrote:
> 
> hi, Dan:
> i am now building a gcc for powerpc on i686. i have downloaded
> binutils-2.9.5.0.16 and gcc-2.95.2. i need the latest version of gcc
> for i want to build program for powerpc403 and powerpc401.
> and then, i first built binutils by these step:
> 1. decompress the binutils-2.9.5.0.16.tar to a temp directory.
> 2. chdir to that directory and run "./configure
> --target=powerpc-linux-gnu"
> 3. run "make" and "make install"
> 
> after all these done, i build binutils to /usr/local/bin.
> next i begin to build gcc:
> 1. decompress the gcc-2.95.2 to another temp directory.
> 2. chdir to that directory and run "./configure
> --target=powerpc-linux-gnu"
> 3. run "make" and "make install"
> 
> but this time, i failed. make told me it failed to find stdlib.h and
> uinstd.h
> when build libgcc2.a. then i tried to modify the Makefile and this line:
> CFLAGS = -g -O2 -Dinhibit_libc
> 
> after run make, another error came out :-(
> --------------------
> checking for sys/time.h... yes
> checking for sys/resource.h... yes
> checking for sys/wait.h that is POSIX.1 compatible... no
> checking whether the C compiler (/root/gcc-2.95.2/gcc/xgcc
> -B/root/gcc-2.95.2/gcc/ -B/usr/local/powerpc-linux-gnu/bin/ -g -O2
> -Dinho
> configure: error: installation or configuration problem: C compiler
> cannot create executables.
> make[1]: Entering directory `/root/gcc-2.95.2/powerpc-linux-gnu/libio'
> test x"no" != xyes ||\
>   /root/gcc-2.95.2/gcc/xgcc -B/root/gcc-2.95.2/gcc/
> -B/usr/local/powerpc-linux-gnu/bin/ -c -g -O2 -Dinhibit_libc -I. -I.
> -D_IO_MTSAo
> /root/gcc-2.95.2/gcc/xgcc -B/root/gcc-2.95.2/gcc/
> -B/usr/local/powerpc-linux-gnu/bin/ -c -g -O2 -Dinhibit_libc -I. -I.
> -D_IO_MTSAFEc
> In file included from iogetline.c:26:
> libioP.h:30: errno.h: No such file or directory
> In file included from iolibio.h:1,
>                  from libioP.h:47,
>                  from iogetline.c:26:
> libio.h:30: _G_config.h: No such file or directory
> iogetline.c:27: string.h: No such file or directory
> make[1]: *** [iogetline.o] Error 1
> make[1]: Leaving directory `/root/gcc-2.95.2/powerpc-linux-gnu/libio'
> make: *** [all-target-libio] Error 2
> --------------------
> somebody told me i must install lib and include file for the ppc first.
> but where to download them.
> do you think i still miss something.  would you please show me the right
> step to build?

I built a cross-dev environment sometime ago. Here's what I did:

0. got glibc-?.tar.gz from the usual places
   get binutils-?.tar.gz
   get egcs-?.tar.gz

1. Built and installed binutils

2. Began with the egcs
   configure --prefix=/usr/local                   \
             --build=i686-pc-linux-gnu             \
             --host=i686-pc-linux-gnu              \
             --target=powerpc-unknown-linux-gnu
   make LANGUAGES=c
   make -k
/* make fails, trying to build libgcc.a */

   make -k LANGUAGES=c install
/* now we have a compiler, which compiles. We can't link yet, so
 * we can't create shared libs or executables, but we _can_ create
 * static glibc
 */

3. Began with glibc
   configure --prefix=/usr/local                 \
             --build=i686-pc-linux-gnu           \
             --host=powerpc-unknown-linux-gnu    \
             --enable-add-ons=crypt,linuxthreads \
             --disable-profile

   make -k
/* build fails when trying to link some execitables
 * and some shared libs 
 */

   make -k install install_root=whatever
/* now we have enough headers and static librararies to complete
 * the build of gcc 
 */

4. Back to egcs
   make
   make install
/* no errors at this point, now we have complete gcc */

5. Back to glibc
   make
   make install install_root=whatever
/* no errors anymore */

That's all. Don't rely on the exact parameters to configure,
I got them from memory.

Regards,
-velco

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