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

Name:             R-CRAN-%{packname}
Version:          1.1
Release:          1%{?dist}%{?buildtag}
Summary:          Modelling Interactions in High-Dimensional Data with Backtracking

License:          GPL (>= 2)
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-Matrix 
BuildRequires:    R-parallel 
BuildRequires:    R-CRAN-Rcpp 
Requires:         R-CRAN-Matrix 
Requires:         R-parallel 
Requires:         R-CRAN-Rcpp 

%description
Implementation of the algorithm introduced in Shah, R. D. (2016)
<https://www.jmlr.org/papers/volume17/13-515/13-515.pdf>. Data with
thousands of predictors can be handled. The algorithm performs sequential
Lasso fits on design matrices containing increasing sets of candidate
interactions. Previous fits are used to greatly speed up subsequent fits,
so the algorithm is very efficient.

%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}