Gnat cross compiler

[Alexis <jose_alexis_paez_thurgood@hotmail.com>]

Hi,

I've spent some time trying to build a gcc Ada cross compiler for i686-
elf target (well, a c,c++,ada compiler). I'm working on Windows with
Cygwin 1.7 and gcc 4.3.4 binaries and sources. I'm following the
procedure on: http://wiki.osdev.org/GCC_Cross-Compiler#Step_1_-_Bootstrap

So far GCC and libgcc have been built fine, but when I try to use i686-
elf-gcc to compile an Ada program I get the following error:

$ i686-elf-gcc -c hello.adb
fatal error, run-time library not installed correctly
cannot locate file system.ads
compilation abandoned

Thinking that this might solve the problem I've tried to build libada
following the same procedure for libgcc (make all-target-libada), only
to get multiple compilation errors such as (extract for a much larger
log):

make -C rts \
                CC="`echo \"/usr/src/build-gcc/./gcc/xgcc -B/usr/src/
build-gcc/.
/gcc/ -B/usr/cross/i686-elf/bin/ -B/usr/cross/i686-elf/lib/ -isystem /
usr/cross/
i686-elf/include -isystem /usr/cross/i686-elf/sys-include\" \
                | sed -e 's,^\./xgcc,../../xgcc,' -e 's,-B\./,-
B../../,'`" \
                INCLUDES="-I. -I.. -I../.. -I/usr/src/gcc-4.3.4/gcc/
ada -I/usr/s
rc/gcc-4.3.4/gcc/ada/../config -I/usr/src/gcc-4.3.4/gcc/ada/../../
include -I/usr
/src/gcc-4.3.4/gcc/ada/.. -I./../.." \
                CFLAGS="-g -O2 -fPIC -fexceptions -DIN_RTS" \
                FORCE_DEBUG_ADAFLAGS="-g" \
                srcdir=/usr/src/gcc-4.3.4/gcc/ada \
                -f ../Makefile adaint.o argv.o cio.o cstreams.o
ctrl_c.o errno.o
 exit.o env.o raise.o sysdep.o aux-io.o init.o initialize.o seh_init.o
cal.o fin
al.o tracebak.o expect.o mkdir.o socket.o targext.o
make[3]: Entering directory `/usr/src/build-gcc/gcc/ada/rts'
/usr/src/build-gcc/./gcc/xgcc -B/usr/src/build-gcc/./gcc/ -B/usr/cross/
i686-elf/
bin/ -B/usr/cross/i686-elf/lib/ -isystem /usr/cross/i686-elf/include -
isystem /u
sr/cross/i686-elf/sys-include -c -DCROSS_DIRECTORY_STRUCTURE -
DIN_GCC   `echo -g
 -O2 -fPIC -fexceptions -DIN_RTS |sed -e 's/-pedantic//g' -e 's/-
Wtraditional//g
'`      -I. -I.. -I../.. -I/usr/src/gcc-4.3.4/gcc/ada -I/usr/src/
gcc-4.3.4/gcc/a
da/../config -I/usr/src/gcc-4.3.4/gcc/ada/../../include -I/usr/src/
gcc-4.3.4/gcc
/ada/.. -I./../.. adaint.c \
          -o adaint.o
In file included from adaint.c:61:
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:90:19: error: stdio.h: No such
file or d
irectory
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:93:23: error: sys/types.h: No
such file
or directory
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:96:19: error: errno.h: No such
file or d
irectory
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:103:20: error: string.h: No
such file or
 directory
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:104:20: error: stdlib.h: No
such file or
 directory
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:105:20: error: unistd.h: No
such file or
 directory
/usr/src/gcc-4.3.4/gcc/ada/../tsystem.h:111:18: error: time.h: No such
file or d
irectory

Can anybody please advise?

Kind regards, Alexis.