[CP2K-user] [CP2K:19398] Re: cp2k compilation fail on grid_cpu_collocate.c

[Mario A Bianchet]

Hey Ole

I am using spack to install it with gcc12.1

On Thursday, October 19, 2023 at 6:44:33 AM UTC-4 Ole Schütt wrote:

> Hi Mario,
>
> > The variable DBL_DECIMAL_DIG; is now declared in cfloat.h not anymore in 
> float.h
>
> I believe this only applies to C++. Since grid_cpu_collocate.c is a C 
> file, the float.h header should still be correct.
>
> Your build probably fails because you selected an older standard. The 
> DBL_DECIMAL_DIG macro was only added in the C11.
>
> -Ole
>
> On Thursday, October 19, 2023 at 5:33:12 AM UTC+2 Mario A Bianchet wrote:
>
>> Hello 
>> cp2k 2023.2 verion
>> The variable  DBL_DECIMAL_DIG; is  now declared in cfloat.h not anymore 
>> in float.h
>> error:
>>
>>     327       47 |   const int D = DBL_DECIMAL_DIG;
>>      328          |                 ^~~~~~~~~~~~~~~
>>      329          |                 DECIMAL_DIG
>>      330   
>>  /tmp/mbianch1/spack-stage/spack-stage-cp2k-2023.2-du533sl6bhg7revw3abcejktx7qaqm3w/spack-src/src/grid/cpu/grid_cpu_collocate.c:47:17: 
>> note: each undeclared identifier is reported only once ,,,
>>
>> Mario
>>
>

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