%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  PoissonMultinomial
%global packver   1.1
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.1
Release:          1%{?dist}%{?buildtag}
Summary:          The Poisson-Multinomial Distribution

License:          GPL (>= 2)
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    fftw-devel
BuildRequires:    R-devel
Requires:         R-core
BuildRequires:    R-CRAN-mvtnorm 
BuildRequires:    R-CRAN-Rcpp 
BuildRequires:    R-CRAN-RcppArmadillo 
Requires:         R-CRAN-mvtnorm 
Requires:         R-CRAN-Rcpp 

%description
Implementation of the exact, normal approximation, and simulation-based
methods for computing the probability mass function (pmf) and cumulative
distribution function (cdf) of the Poisson-Multinomial distribution,
together with a random number generator for the distribution. The exact
method is based on multi-dimensional fast Fourier transformation (FFT) of
the characteristic function of the Poisson-Multinomial distribution. The
normal approximation method uses a multivariate normal distribution to
approximate the pmf of the distribution based on central limit theorem.
The simulation method is based on the law of large numbers. Details about
the methods are available in Lin, Wang, and Hong (2022)
<DOI:10.1007/s00180-022-01299-0>.

%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}