%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  FKSUM
%global packver   1.0.1
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.0.1
Release:          1%{?dist}%{?buildtag}
Summary:          Fast Kernel Sums

License:          GPL
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel
Requires:         R-core
BuildRequires:    R-CRAN-Rcpp >= 0.12.16
BuildRequires:    R-CRAN-rARPACK 
BuildRequires:    R-CRAN-MASS 
BuildRequires:    R-CRAN-Matrix 
BuildRequires:    R-CRAN-RcppArmadillo 
Requires:         R-CRAN-Rcpp >= 0.12.16
Requires:         R-CRAN-rARPACK 
Requires:         R-CRAN-MASS 
Requires:         R-CRAN-Matrix 

%description
Implements the method of Hofmeyr, D.P. (2021)
<DOI:10.1109/TPAMI.2019.2930501> for fast evaluation of univariate kernel
smoothers based on recursive computations. Applications to the basic
problems of density and regression function estimation are provided, as
well as some projection pursuit methods for which the objective is based
on non-parametric functionals of the projected density, or conditional
density of a response given projected covariates. The package is
accompanied by an instructive paper in the Journal of Statistical Software
<doi:10.18637/jss.v101.i03>.

%prep
%setup -q -c -n %{packname}

# fix end of executable files
find -type f -executable -exec grep -Iq . {} \; -exec sed -i -e '$a\' {} \;
# prevent binary stripping
[ -d %{packname}/src ] && find %{packname}/src -type f -exec \
  sed -i 's@/usr/bin/strip@/usr/bin/true@g' {} \; || true
[ -d %{packname}/src ] && find %{packname}/src/Make* -type f -exec \
  sed -i 's@-g0@@g' {} \; || true
# don't allow local prefix in executable scripts
find -type f -executable -exec sed -Ei 's@#!( )*/usr/local/bin@#!/usr/bin@g' {} \;

%build

%install

mkdir -p %{buildroot}%{rlibdir}
%{_bindir}/R CMD INSTALL -l %{buildroot}%{rlibdir} %{packname}
test -d %{packname}/src && (cd %{packname}/src; rm -f *.o *.so)
rm -f %{buildroot}%{rlibdir}/R.css
# remove buildroot from installed files
find %{buildroot}%{rlibdir} -type f -exec sed -i "s@%{buildroot}@@g" {} \;

%files
%{rlibdir}/%{packname}