%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  stableGR
%global packver   1.2
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.2
Release:          1%{?dist}%{?buildtag}
Summary:          A Stable Gelman-Rubin Diagnostic for Markov Chain Monte Carlo

License:          GPL-3
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 3.5
Requires:         R-core >= 3.5
BuildArch:        noarch
BuildRequires:    R-CRAN-mcmcse >= 1.4.1
BuildRequires:    R-CRAN-mvtnorm 
Requires:         R-CRAN-mcmcse >= 1.4.1
Requires:         R-CRAN-mvtnorm 

%description
Practitioners of Bayesian statistics often use Markov chain Monte Carlo
(MCMC) samplers to sample from a posterior distribution. This package
determines whether the MCMC sample is large enough to yield reliable
estimates of the target distribution. In particular, this calculates a
Gelman-Rubin convergence diagnostic using stable and consistent estimators
of Monte Carlo variance. Additionally, this uses the connection between an
MCMC sample's effective sample size and the Gelman-Rubin diagnostic to
produce a threshold for terminating MCMC simulation. Finally, this informs
the user whether enough samples have been collected and (if necessary)
estimates the number of samples needed for a desired level of accuracy.
The theory underlying these methods can be found in "Revisiting the
Gelman-Rubin Diagnostic" by Vats and Knudson (2018) <arXiv:1812:09384>.

%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}