can not compute suffix error

[Nulik Nol <nuliknol at gmail dot com>]

Hi,
I have read about the compute suffix error in the FAQ, but I do have
the mpc, mpfr and gmp libraries installed (from sources), so I don't
have an idea why I am getting this error, any clues ?

Thanks in adance

make[3]: Leaving directory
`/home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc'
Checking multilib configuration for libgcc...
Configuring stage 1 in x86_64-unknown-linux-gnu/libgcc
configure: loading cache ./config.cache
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for --enable-version-specific-runtime-libs... no
checking for a BSD-compatible install... /usr/bin/install -c
checking for gawk... gawk
checking for x86_64-unknown-linux-gnu-ar... ar
checking for x86_64-unknown-linux-gnu-lipo... lipo
checking for x86_64-unknown-linux-gnu-nm...
/home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc/nm
checking for x86_64-unknown-linux-gnu-ranlib... ranlib
checking for x86_64-unknown-linux-gnu-strip... strip
checking whether ln -s works... yes
checking for x86_64-unknown-linux-gnu-gcc...
/home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc/xgcc
-B/home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc/
-B/usr/gcc474/x86_64-unknown-linux-gnu/bin/
-B/usr/gcc474/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/gcc474/x86_64-unknown-linux-gnu/include -isystem
/usr/gcc474/x86_64-unknown-linux-gnu/sys-include
checking for suffix of object files... configure: error: in
`/home/niko/gcc-4.7.4/x86_64-unknown-linux-gnu/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
make[2]: *** [configure-stage1-target-libgcc] Error 1
make[2]: Leaving directory `/home/niko/gcc-4.7.4'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/niko/gcc-4.7.4'
make: *** [all] Error 2
-bash-3.2$ tail -50 config.log
poststage1_libs=''
pplinc=''
ppllibs=''
prefix='/usr/gcc474'
program_transform_name='s,y,y,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
stage1_cflags='-g -fkeep-inline-functions'
stage1_checking='--enable-checking=yes,types'
stage1_languages='c,c++,lto'
stage1_ldflags=''
stage1_libs=''
stage2_werror_flag=''
sysconfdir='${prefix}/etc'
target='x86_64-unknown-linux-gnu'
target_alias=''
target_configargs='--cache-file=./config.cache --enable-multilib
'\''--verbose'\'' '\''--prefix=/usr/gcc474/'\''
'\''--with-gmp=/usr/gmp/'\'' '\''--with-mpfr=/usr/mpfr/'\''
'\''--with-mpc=/usr/mpc/'\''
'\''--enable-languages=c,c++,fortran,java,lto,objc'\''
--program-transform-name='\''s,y,y,'\'' --disable-option-checking'
target_configdirs=' libgcc libgomp libitm libstdc++-v3 libmudflap
libssp libquadmath libgfortran boehm-gc libffi zlib libjava libobjc'
target_cpu='x86_64'
target_noncanonical='x86_64-unknown-linux-gnu'
target_os='linux-gnu'
target_subdir='x86_64-unknown-linux-gnu'
target_vendor='unknown'
tooldir='${exec_prefix}/x86_64-unknown-linux-gnu'

## ------------------- ##
## File substitutions. ##
## ------------------- ##

alphaieee_frag='/dev/null'
host_makefile_frag='/dev/null'
ospace_frag='/dev/null'
serialization_dependencies='serdep.tmp'
target_makefile_frag='./config/mt-gnu'

## ----------- ##
## confdefs.h. ##
## ----------- ##

/* confdefs.h */
#define PACKAGE_NAME ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""
#define PACKAGE_STRING ""
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""
#define LT_OBJDIR ".libs/"

configure: exit 0
-bash-3.2$