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WRF Warning message

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I'm compiling WRF 3.6.1 using OneAPI. After I running ./configure, the following warning messages appears:

$JASPERLIB or $JASPERINC not found in environment, configuring to build without grib2 I/O...
Testing for NetCDF, C and Fortran compiler

This installation of NetCDF is 64-bit
C compiler is 64-bit
Fortran compiler is 64-bit
It will build in 64-bit

************************** W A R N I N G ************************************

There are some Fortran 2003 features in WRF that your compiler does not recognize
The IEEE signaling call has been removed. That may not be enough.


I just ignores this warning message, and run ./compile em_real. And the *.exe are all generated successfully. But I wonder if the warning message has any effects on the accuracy of the simulated results? Is it serious if I ignore the warning?

No, that message can be ignored. If everything compiled correctly and you're able to run, then it's not an issue.