Error when building cross compiler

[Denis Onischenko <denis dot onischenko at gmail dot com>]

I am getting the following error when compiling "x86_64 to powerpc64"
cross gcc, as soon as the libgcc_s.so.1 has appeared in obj/gcc
directory.


...
# Now that we have built all the objects, we need to copy
# them back to the GCC directory. ?Too many things (other
# in-tree libraries, and DejaGNU) know about the layout
# of the build tree, for now.
make install-leaf DESTDIR=../.././gcc \
?slibdir= libsubdir= MULTIOSDIR=.
make[5]: Entering directory
`/a/linux/.powerpc/gcc/obj/powerpc64-unknown-linux-gnu/libgcc'
/bin/bash ../../../src/libgcc/../mkinstalldirs ../.././gcc
/usr/bin/install -c -m 644 libgcc_eh.a ../.././gcc/
chmod 644 ../.././gcc/libgcc_eh.a
/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/bin/ranlib
../.././gcc/libgcc_eh.a
/bin/bash ../../../src/libgcc/../mkinstalldirs ../.././gcc;
/usr/bin/install -c -m 644 ./libgcc_s.so.1 ../.././gcc/libgcc_s.so.1;
rm -f ../.././gcc/libgcc_s.so; ln -s libgcc_s.so.1
../.././gcc/libgcc_s.so
/bin/bash ../../../src/libgcc/../mkinstalldirs ../.././gcc
/usr/bin/install -c -m 644 libgcc.a ../.././gcc/
chmod 644 ../.././gcc/libgcc.a
/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/bin/ranlib
../.././gcc/libgcc.a
/usr/bin/install -c -m 644 libgcov.a ../.././gcc/
chmod 644 ../.././gcc/libgcov.a
/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/bin/ranlib
../.././gcc/libgcov.a
parts="crtbegin.o crtbeginS.o crtbeginT.o crtend.o crtendS.o ecrti.o
ecrtn.o ncrti.o ncrtn.o"; \
for file in $parts; do \
?rm -f ../.././gcc/$file; \
?/usr/bin/install -c -m 644 $file ../.././gcc/; \
done
make[5]: Leaving directory
`/a/linux/.powerpc/gcc/obj/powerpc64-unknown-linux-gnu/libgcc'
make[4]: Leaving directory
`/a/linux/.powerpc/gcc/obj/powerpc64-unknown-linux-gnu/libgcc'
Checking multilib configuration for libgomp...
mkdir -p -- powerpc64-unknown-linux-gnu/libgomp
Configuring in powerpc64-unknown-linux-gnu/libgomp
configure: creating cache ./config.cache
checking for --enable-version-specific-runtime-libs... no
checking for --enable-generated-files-in-srcdir... no
checking build system type... x86_64-unknown-linux-gnu
checking host system type... powerpc64-unknown-linux-gnu
checking target system type... powerpc64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for powerpc64-unknown-linux-gnu-strip...
/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/bin/strip
checking for powerpc64-unknown-linux-gnu-gcc...
/a/linux/.powerpc/gcc/obj/./gcc/xgcc
-B/a/linux/.powerpc/gcc/obj/./gcc/
-B/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/bin/
-B/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/lib/
-isystem /a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/include
-isystem /a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/sys-include
checking for C compiler default output file name... configure: error:
in `/a/linux/.powerpc/gcc/obj/powerpc64-unknown-linux-gnu/libgomp':
configure: error: C compiler cannot create executables
See `config.log' for more details.
make[3]: *** [configure-target-libgomp] Error 1
make[3]: Leaving directory `/a/linux/.powerpc/gcc/obj'

The obj/powerpc64-unknown-linux-gnu/libgomp/config.log content is:

...
configure:2569: checking for C compiler default output file name
configure:2572: /a/linux/.powerpc/gcc/obj/./gcc/xgcc
-B/a/linux/.powerpc/gcc/obj/./gcc/
-B/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/bin/
-B/a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/lib/
-isystem /a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/include
-isystem /a/linux/.powerpc/cross-tools/powerpc64-unknown-linux-gnu/sys-include
-g -O2     conftest.c  >&5
/a/linux/.powerpc/gcc/obj/./gcc/cc1: error while loading shared
libraries: /a/linux/.powerpc/gcc/obj/./gcc/libgcc_s.so.1: ELF file
data encoding not little-endian
configure:2575: $? = 1
configure: failed program was:
| /* confdefs.h.  */
|
| #define PACKAGE_NAME "GNU OpenMP Runtime Library"
| #define PACKAGE_TARNAME "libgomp"
| #define PACKAGE_VERSION "1.0"
| #define PACKAGE_STRING "GNU OpenMP Runtime Library 1.0"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE "libgomp"
| #define VERSION "1.0"
| /* end confdefs.h.  */
|
| int
| main ()
| {
|
|   ;
|   return 0;
| }
configure:2613: error: in
`/a/linux/.powerpc/gcc/obj/powerpc64-unknown-linux-gnu/libgomp':
configure:2616: error: C compiler cannot create executables
See `config.log' for more details.
...


It seems that host cc1 executable tries to load target libgcc_s.so.1
from obj/gcc directory, rather than host libgcc_s.so.1 from /lib. The
message "error while loading shared libraries:
/a/linux/.powerpc/gcc/obj/./gcc/libgcc_s.so.1: ELF file data encoding
not little-endian" is from glibc.

Is this a bug ? And are there any workarounds ?