1) cat /proc/cpuinfo yields two processors, both with the following properties:
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Duo CPU T8300 @ 2.40GHz
2) ~/bin/polymake/polymake-2.10/build.x86_64/external/nauty$ /usr/local/bin/gcc-4.4.6 -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.4.6/configure --prefix=/usr/local --program-suffix=-4.4.6 --enable-languages=c,c++ --enable-version-specific-runtime-libs
Thread model: posix
gcc version 4.4.6 (GCC)
3) I tried the commands and got:
~/bin/polymake/polymake-2.10/build.x86_64/external/nauty$ sh -c "CC=/usr/local/bin/gcc-4.4.6 ../../../external/nauty/configure x86_64-unknown-linux-gnu && rm makefile"
configure: warning: x86_64-unknown-linux-gnu: invalid host type
creating cache ./config.cache
checking host system type... Invalid configuration `x86_64-unknown-linux-gnu': machine `x86_64-unknown' not recognized
checking for gcc... /usr/local/bin/gcc-4.4.6
checking whether the C compiler (/usr/local/bin/gcc-4.4.6 ) works... no
configure: error: installation or configuration problem: C compiler cannot create executables.
P.S.: Will be on vacation the next four days, so further experiments will have to wait until monday