[CMake] BLAS/atlas linux linker flags

[luxInteg]

Greetings,

I am learning cmake.
My computer has these:-

cpu:         -amd64
OS:          -linux64 bit
BLAS:       -atlas3.9.32 
compiler: -gcc (gcc, gfortran, g++)



I had a look at   FindBLAS.cmake. Unfortunately I cannot see where the linker 
flags for   a standard linuxPC setup such as mine are determined.

Advice   would be appreciated.

luxInteg