%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  pnd
%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:          Parallel Numerical Derivatives, Gradients, Jacobians, and Hessians of Arbitrary Accuracy Order

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


BuildRequires:    R-devel >= 3.4.0
Requires:         R-core >= 3.4.0
BuildArch:        noarch
BuildRequires:    R-parallel 
BuildRequires:    R-CRAN-Rdpack 
Requires:         R-parallel 
Requires:         R-CRAN-Rdpack 

%description
Numerical derivatives through finite-difference approximations can be
calculated using the 'pnd' package with parallel capabilities and optimal
step-size selection to improve accuracy. These functions facilitate
efficient computation of derivatives, gradients, Jacobians, and Hessians,
allowing for more evaluations to reduce the mathematical and machine
errors. Designed for compatibility with the 'numDeriv' package, which has
not received updates in several years, it introduces advanced features
such as computing derivatives of arbitrary order, improving the accuracy
of Hessian approximations by avoiding repeated differencing, and
parallelising slow functions on Windows, Mac, and Linux.

%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}