%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  MRAM
%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:          Multivariate Regression Association Measure

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
BuildArch:        noarch
BuildRequires:    R-CRAN-RANN 
Requires:         R-CRAN-RANN 

%description
Implementations of an estimator for the multivariate regression
association measure (MRAM) proposed in Shih and Chen (2025) <in revision>
and its associated variable selection algorithm. The MRAM quantifies the
predictability of a random vector Y from a random vector X given a random
vector Z. It takes the maximum value 1 if and only if Y is almost surely a
measurable function of X and Z, and the minimum value of 0 if Y is
conditionally independent of X given Z. The MRAM generalizes the Kendall's
tau copula correlation ratio proposed in Shih and Emura (2021)
<doi:10.1016/j.jmva.2020.104708> by employing the spatial sign function.
The estimator is based on the nearest neighbor method, and the associated
variable selection algorithm is adapted from the feature ordering by
conditional independence (FOCI) algorithm of Azadkia and Chatterjee (2021)
<doi:10.1214/21-AOS2073>. For further details, see the paper Shih and Chen
(2025) <in revision>.

%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}