AMgx compiling problems

Hello,

we are trying to compile the AMGx library on a centos 7. We have the toolkit 10.2, gcc 4.8 and the latest driver.

We try cmake $AMGX_SRC -DCMAKE_TOOLCHAIN_FILE=$TOOLCHAIN -DCMAKE_INSTALL_PREFIX=$IDIR -DCUDA_ARCH="75"
We get this error:

[ 33%] Building NVCC (Device) object base/CMakeFiles/amgx_base.dir/src/amgx_base_generated_csr_multiply_sm20.cu.o
ptxas /tmp/tmpxft_00007fb6_00000000-5_csr_multiply_sm20.ptx, line 49006; error   : Illegal to use symbol '%fd62' of type .f64 as address operand. Use integer or bit only.
```

Switching to gcc 8.3 we get this:

```
[ 12%] Building NVCC (Device) object base/CMakeFiles/amgx_base.dir/src/amgx_base_generated_csr_multiply_sm35.cu.o
ptxas /tmp/tmpxft_000026b7_00000000-5_csr_multiply_sm20.ptx, line 49005; error   : Illegal to use symbol '%fd62' of type .f64 as address operand. Use integer or bit only.
```