I took another look at this problem.. easy enough to fix after all.
This basically means that the aligned_alloc was already declared in stdlib.h ony my system...
/usr/include/stdlib.h:513:14: note: previous declaration of 'aligned_alloc' was here
If this happens to you, do the following for affected Linux users (probably not OSX)
Use find and replace functionality to rename the aligned_alloc to something like faligned_alloc and do the same with aligned_free such as faligned_free
tar -xzvf tiobench-0.3.3.tar.gz
Save. Now compress that dir again
All is now good :-)
tar -czvf tiobench-0.3.3.tar.gz tiobench-0.3.3/
phoronix-test-suite install pts/tiobench-1.1.0