[CP2K-user] van der Waals regtests fail on Intel KNL, and build glitches

[Ronald Cohen]

>
> It seems that the gcc -E doesn’t work:
>
> /home/rcohen/CP2K/cp2k/tools/toolchain/install/gcc-8.2.0/bin/gcc -E 
> -D__COMPILE_ARCH="\"local\"" -D__COMPILE_DATE="\"Wed Jan  9 08:49:48 CET 
> 2019\"" -D__COMPILE_HOST="\"tomcat3\"" 
> -D__COMPILE_REVISION="\"git:89b110c40\"" 
> -D__DATA_DIR="\"/home/rcohen/CP2K/cp2k/data\"" -I/home/rcohen/CP2K/cp2k/src 
> -D__SHORT_FILE__="\"qs_basis_gradient.F\"" -I'/home/rcohen/CP2K/cp2k/src/' 
> qs_basis_gradient.fypped > qs_basis_gradient.f90
> gcc: warning: qs_basis_gradient.fypped: linker input file unused because 
> linking not done
>
>
> It outputs a zero length file:
>
> -rw-r--r--  1 rcohen tomcat   15467 Jan  9 08:49 qs_basis_gradient.fypped
> -rw-r--r--  1 rcohen tomcat       0 Jan  9 08:55 qs_basis_gradient.f90
>
> It must work sometimes because some things get built! 
>

If I use /usr/bin/gcc (gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)) 
the same thing happens. 

I do not see anything wrong with qs_basis_gradient.fypped . Why does gcc -E 
output nothing?

>
> Ron
>
>
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