%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  lsei
%global packver   1.3-1
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.3.1
Release:          1%{?dist}%{?buildtag}
Summary:          Solving Least Squares or Quadratic Programming Problems under Equality/Inequality Constraints

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

%description
It contains functions that solve least squares linear regression problems
under linear equality/inequality constraints. Functions for solving
quadratic programming problems are also available, which transform such
problems into least squares ones first. It is developed based on the
'Fortran' program of Lawson and Hanson (1974, 1995), which is public
domain and available at <https://www.netlib.org/lawson-hanson/>.

%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
test $(gcc -dumpversion) -ge 10 && mkdir -p ~/.R && echo "FFLAGS=$(R CMD config FFLAGS) -fallow-argument-mismatch" > ~/.R/Makevars
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}