It looks like to build is hanging.
Most of the output of uname -a:
Linux Oxygen 3.13.0-91-generic #138-Ubuntu SMP Fri Jun 24 17:00:34 UTC 2016 x86_64 x86_64
Here is the latest output:
make[5]: Entering directory `/media/fitzer/42478fce-2984-4f76-9d2a-70381ca94d31/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/x86_64-unknown-linux-gnu/libstdc++-v3/include'
mkdir -p ./x86_64-unknown-linux-gnu/bits/stdc++.h.gch
/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/host-x86_64-unknown-linux-gnu/gcc/xgcc -shared-libgcc -B/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/host-x86_64-unknown-linux-gnu/gcc -nostdinc++ -L/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/x86_64-unknown-linux-gnu/libstdc++-v3/src -L/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -B/usr/local/x86_64-unknown-linux-gnu/bin/ -B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem /usr/local/x86_64-unknown-linux-gnu/include -isystem /usr/local/x86_64-unknown-linux-gnu/sys-include -x c++-header -nostdinc++ -g -O2 -D_GNU_SOURCE -I/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu -I/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/x86_64-unknown-linux-gnu/libstdc++-v3/include -I/home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x /home/fitzer/src/gcc-5.2.0+gm2-git-latest/gm2/gcc-versionno/libstdc++-v3/include/precompiled/stdc++.h \
-o x86_64-unknown-linux-gnu/bits/stdc++.h.gch/O2ggnu++0x.gch
Any ideas where I can start?