%global __brp_check_rpaths %{nil}
%global packname  ManifoldOptim
%global packver   1.0.1
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.0.1
Release:          1%{?dist}%{?buildtag}
Summary:          An R Interface to the 'ROPTLIB' Library for Riemannian Manifold Optimization

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-Rcpp >= 0.12.0
BuildRequires:    R-CRAN-RcppArmadillo 
Requires:         R-CRAN-Rcpp >= 0.12.0

%description
An R interface to version 0.3 of the 'ROPTLIB' optimization library (see
<https://www.math.fsu.edu/~whuang2/> for more information). Optimize real-
valued functions over manifolds such as Stiefel, Grassmann, and Symmetric
Positive Definite matrices. For details see Martin et. al. (2020)
<doi:10.18637/jss.v093.i01>. Note that the optional ldr package used in
some of this package's examples can be obtained from either JSS
<https://www.jstatsoft.org/index.php/jss/article/view/v061i03/2886> or
from the CRAN archives
<https://cran.r-project.org/src/contrib/Archive/ldr/ldr_1.3.3.tar.gz>.

%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}