error report: ambiguous call (macOS with default settings)

[EvergreenTree]

Just FYI, I tested the program on macOS system with default settings, and got the following error message. I believe it may be a namespace problem. Could you help solving this?

g++ -g -std=c++0x -MMD -w -I include -c -o build/nist_spblas.o src/nist_spblas.cc
src/nist_spblas.cc:1318:12: error: call to 'conj' is ambiguous
t += conj(x[i]) * y[index[i]*incy];
^~~~

[ZhiminPeng]

We have seen this error before. It might due to the version of your gcc. TMAC needs gcc>=4.7. This link might be helpful for installing a newer version of gcc in Mac.