%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  BsplineQuantReg
%global packver   0.2.5
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          0.2.5
Release:          1%{?dist}%{?buildtag}
Summary:          'Constrained Quantile Regression with B-Splines'

License:          GPL-3
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 3.5.0
Requires:         R-core >= 3.5.0
BuildArch:        noarch
BuildRequires:    R-CRAN-CVXR 
BuildRequires:    R-CRAN-ECOSolveR 
BuildRequires:    R-utils 
Requires:         R-CRAN-CVXR 
Requires:         R-CRAN-ECOSolveR 
Requires:         R-utils 

%description
Quantile regression with B-splines under shape constraints. The initial
version with cubic splines is now augmented with splines of degree 1 to 4.
Constraints for degrees 3 (monotone) and 4 (monotone and convex) use the
Karlin-Studden SOCP characterization for the sign of the polynomial, while
other constraints applied at the knots are added as linear problems. The
method for cubic splines is described in 'Abbes (2026)'
<doi:10.5281/zenodo.17427913>. Other formulations are simple consequences
of the other given references. All B-spline and polynomial functions have
been rewritten for consistency. This package provides an original B-spline
library for conversion between PP-form and B-spline representation,
evaluation, differentiation, callable and non-callable objects, print
human readable pp forms, view basis, all based on "De Boor's" theory. It
also extends to multiple knots to catch up singularities. This feature is
robust in the package including for constrained regression. This R
implementation is intended for demonstration and prototyping. An
equivalent Python package is available at
<https://pypi.org/project/BsplineQuantRegpy/>.

%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}