%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  nimbleHMC
%global packver   0.2.1
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          0.2.1
Release:          1%{?dist}%{?buildtag}
Summary:          Hamiltonian Monte Carlo and Other Gradient-Based MCMC Sampling Algorithms for 'nimble'

License:          BSD_3_clause + file LICENSE | GPL (>= 2)
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 3.5.0
Requires:         R-core >= 3.5.0
BuildArch:        noarch
BuildRequires:    R-CRAN-nimble >= 1.0.0
BuildRequires:    R-methods 
Requires:         R-CRAN-nimble >= 1.0.0
Requires:         R-methods 

%description
Provides gradient-based MCMC sampling algorithms for use with the MCMC
engine provided by the 'nimble' package.  This includes two versions of
Hamiltonian Monte Carlo (HMC) No-U-Turn (NUTS) sampling, and (under
development) Langevin samplers.  The `NUTS_classic` sampler implements the
original HMC-NUTS algorithm as described in Hoffman and Gelman (2014)
<arXiv:1111.4246>.  The `NUTS` sampler is a modern version of HMC-NUTS
sampling matching the HMC sampler available in version 2.32.2 of Stan
(Stan Development Team, 2023). In addition, convenience functions are
provided for generating and modifying MCMC configuration objects which
employ HMC sampling.

%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}