[Pw_forum] Compile QE v-4.3.2

[Axel Kohlmeyer]

On Wed, Feb 5, 2014 at 6:16 PM, Vo, Trinh (398C) <Trinh.Vo at jpl.nasa.gov> wrote:
> Dear QE users,
>
> In compiling QE in order to know whether the  external fftw  library
> included in Intel MKL (version 13)  is used,  instead of internal fftw is
> used, I changed the name of the file "fftw.c" in the directory "clib" into
> different name.  The compilation failed with following message:
>
> make[1]: *** No rule to make target `fftw.c', needed by `fft_stick.o'.
> Stop.
> make[1]: Leaving directory `/home6/ttvo/espresso-4.3.2_test/clib'
> make: *** [libs] Error 2
>
> This may mean that the the code failed to find the external library and
> continued to use the internal one.  I have one question to confirm what I

no. it doesn't.

> understand, and  I  appreciate if  you could help. if the external library
> is used, does the internal "fftw.c" is still called by some subroutine in
> the code?

no, but a fftw.c file has to be present to satisfy the build
dependencies. the easiest is to create an empty one via: touch fftw.c

axel.



>
> Thank you,
>
> Trinh Vo
>
> JPL/CalTech
> Research and Technology Staff
>
>
> _______________________________________________
> Pw_forum mailing list
> Pw_forum at pwscf.org
> http://pwscf.org/mailman/listinfo/pw_forum



-- 
Dr. Axel Kohlmeyer  akohlmey at gmail.com  http://goo.gl/1wk0
College of Science & Technology, Temple University, Philadelphia PA, USA
International Centre for Theoretical Physics, Trieste. Italy.