# Copyright (c) 2019  Dave Love, University of Manchester
# MIT licence, per Fedora policy

%global mainver 3.8

Name:		wrf3
Version:	3.8.1
Release:	2%{?dist}
Summary:	The Weather Research and Forecasting Model
License:	Public Domain
URL:		http://www2.mmm.ucar.edu/wrf/
Source0:	https://github.com/wrf-model/WRF/archive/V%version/wrf-%version.tar.gz
# Concocted by painful iterations of configure.  (Had to be done
# against the static netcdf package, but the dynamic one works for
# building.)
Source1:	configure.wrf3
# Allow building with gfortran 4.8 by conditionalizing the
# ieee_arithmetic bits properly (unnecessary with wrf 4.1.)
Patch1:		wrf-f2003.patch
BuildRequires:	perl csh netcdf-fortran-devel m4

%global desc \
The Weather Research and Forecasting (WRF) Model is a next-generation\
mesoscale numerical weather prediction system designed for both\
atmospheric research and operational forecasting applications.  It\
features two dynamical cores, a data assimilation system, and a\
software architecture supporting parallel computation and system\
extensibility.  The model serves a wide range of meteorological\
applications across scales from tens of meters to thousands of kilometers.\
\
This build of version 3 is for use with old data.

%description
%desc

%package openmpi%{?el7:3}
Summary:	The Weather Research and Forecasting Model - openmpi%{?el7:3}
BuildRequires:	openmpi%{?el7:3}-devel
Requires:	openmpi%{?el7:3}%{?_isa}
Requires:	%name-common = %version-%release

%description openmpi%{?el7:3}
%desc

This is the openmpi%{?el7:3} version.

%package common
Summary:	Data for %name
BuildArch:	noarch

%description common
Data (the "run" directory) for %name.

%prep
%setup -q -n WRF-%version
#%patch1 -p1
cp %SOURCE1 configure.wrf
%if 0%{?fedora} || 0%{?rhel} > 7
# With gcc8, -O3 does unroll-and-jam, but the alternative is probably
# better with 4.8
sed -i -e 's/ -DNO_IEEE_MODULE//g' -e 's/-O3/-O2 -ftree-vectorize -funroll-loops/g' configure.wrf
%endif
# Try to make failures more obvious
find -name Makefile | xargs sed -i 's/make -i/make/'
# Fixme: This actually breaks the build, believe it or not, failing to
# find a .mod, but might help diagnose failed builds.
# sed -i 's/make -i/make/' configure.wrf

# Account for even the make files assuming netcdf libs are in a "lib"
# subdir, and headers have to be in a sibling include.
mkdir ncdf4
ln -s %_bindir %_includedir ncdf4
ln -s %_libdir ncdf4/lib


%build
module load mpi/openmpi%{?el7:3}-%{_arch}
srcdir=$(pwd) ./compile em_real


%install
mkdir -p %buildroot%_libdir/openmpi%{?el7:3}/bin %buildroot%_datadir/wrf-%mainver
cd main
for f in *.exe
  do cp -p $f %buildroot%_libdir/openmpi%{?el7:3}/bin/$(basename $f .exe)-%mainver.exe
done
cd ..
rm run/*.exe run/namelist.input
cp -a run %buildroot%_datadir/wrf-%mainver


%files openmpi%{?el7:3}
%doc README
%_libdir/openmpi%{?el7:3}/bin/*.exe

%files common
%doc README
%_datadir/wrf-%mainver


%changelog
* Mon Jul 22 2019 Dave love <loveshack@fedoraproject.org> - 3.8.1-2
- Version installed files as intended

* Mon Jul 22 2019 Dave love <loveshack@fedoraproject.org> - 3.8.1-1
- Old version for old data