Can't choose with_fft_flavor="none" in config ac9 file

Building Abinit
1

Trying to build abinit 9.6.2

I want to use “none” for with_fft_flavor. And here is the relevant section of the ac9 template:

# -------------------------------------------------------------------------- #
# Optimized FFT support                                                      #
# -------------------------------------------------------------------------- #
# Supported libraries:
#
#   * auto          : select library depending on build environment (default)
#   * custom        : bypass build-system checks
#   * dfti          : native MKL FFT library
#   * fftw3         : serial FFTW3 library
#   * fftw3-threads : threaded FFTW3 library
#   * pfft          : MPI-parallel PFFT library (for maintainers only)
#   * goedecker     : Abinit internal FFT
#

However, when I set with_fft_flavor=“geodecker” in my ac9 config file, I get this error when I “make”:

==============================================================================
 === Optimized FFT support                                                  ===
==============================================================================
checking which FFT flavors to enable... dfti goedecker
configure: WARNING: MKL is incompatible with FFTW3
                    Please use DFTI instead and consult
                    https://software.intel.com/content/www/us/en/develop/documentation/onemkl-developer-reference-fortran/top/fourier-transform-functions.html
                    If you set the FFT flavor to fftw3, the configure script
                    will abort. Otherwise, your FFTW3 settings will be ignored.
configure: error: invalid FFT flavor: 'geodecker'

When I try with_fft_flavor=“none”, I get the same error except the last line is:
configure: error: invalid FFT flavor: ‘none’

I got around this by eliminating the dfti option in the configure file by commenting these lines:

  ## Prepend DFTI if linear algebra is MKL
  #if test "${tmp_linalg_has_mkl}" != ""; then
  #  sd_fft_selected_flavors="dfti ${sd_fft_selected_flavors}"
  #fi

But I wonder what the valid choices are for with_fft_option, and specifically, I want to know how to choose “geodecker”

2

Hi,

Without reference to with_fft_* options in the ac9 file, the Build System chosen goedecker

3

Actually, the build system will prefer dfti and pfft if it finds them and choose them before geodecker.

But how do I reference with_fft_flavor in the ac9 file like I wrote? I tried both with_fft_flavor=“none” and with_fft_flavor=“geodecker”, but both options produced errors at make time.

4

little typo in with_fft_flavor=“geodecker”

try with : with_fft_flavor=“goedecker”

5

In the end a simple fix. That did it!