%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  MultiGrey
%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:          Fitting and Forecasting of Grey Model for Multivariate Time Series Data

License:          GPL (>= 2.0)
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
BuildArch:        noarch
BuildRequires:    R-CRAN-zoo 
BuildRequires:    R-stats 
Requires:         R-CRAN-zoo 
Requires:         R-stats 

%description
Grey model is commonly used in time series forecasting when statistical
assumptions are violated with a limited number of data points. The minimum
number of data points required to fit a grey model is four observations.
This package fits Grey model of First order and One Variable, i.e., GM
(1,1) for multivariate time series data and returns the parameters of the
model, model evaluation criteria and h-step ahead forecast values for each
of the time series variables. For method details see, Akay, D. and Atak,
M. (2007) <DOI:10.1016/j.energy.2006.11.014>, Hsu, L. and Wang, C.
(2007).<DOI:10.1016/j.techfore.2006.02.005>.

%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}