%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  autotune
%global packver   0.1.0
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          0.1.0
Release:          1%{?dist}%{?buildtag}
Summary:          Faster and more Efficient Lasso (than 'glmnet' and 'scalreg') with Data-Driven Tuning

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


BuildRequires:    R-devel >= 2.10
Requires:         R-core >= 2.10
BuildRequires:    R-CRAN-Rcpp >= 1.0.13
Requires:         R-CRAN-Rcpp >= 1.0.13

%description
Fits Lasso paths for high-dimensional regression using coordinate descent
with automatic, data-driven tuning of the regularization parameter. The
implementation is 10 to 50 times faster than the standard 'glmnet'
implementation of Lasso and over 100 times faster than scaled Lasso. It
also provides a reliable estimate of the regression noise level. For
details of the method, see Sadhukhan, Wilms, Smeekes and Basu (2025)
"Autotune: fast, accurate, and automatic tuning parameter selection for
Lasso" <doi:10.48550/arXiv.2512.11139>.

%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}