# The (empty) main package is arch, to have the package built and tests run
# on all arches, but the actual result package is the noarch -devel subpackge.
# Debuginfo packages are disabled to prevent rpmbuild from generating an empty
# debuginfo package for the empty main package.
%global debug_package %{nil}

# FIXME ICE on ppc64le when buildings docs with optflags
%ifarch ppc64le
%global optflags %{nil}
%endif


%if 0%{?fedora} >= 33 || 0%{?rhel} >= 9
%global blaslib flexiblas
%global cmake_blas_flags -DBLA_VENDOR=FlexiBLAS
%else
%global blaslib openblas
%global blasvar o
%global cmake_blas_flags -DBLAS_LIBRARIES=%{_libdir}/lib%{blaslib}%{blasvar}.so
%endif

%if 0%{?rhel} >= 8
%bcond_with qt
%else
%bcond_without qt
%endif

Name:           eigen3
Version:        3.3.9
Release:        7%{?dist}
Summary:        A lightweight C++ template library for vector and matrix math

License:        MPLv2.0 and LGPLv2+ and BSD and Minpack
URL:            http://eigen.tuxfamily.org/index.php?title=Main_Page
Source0:        https://gitlab.com/libeigen/eigen/-/archive/%{version}/eigen-%{version}.tar.bz2

# Backport fix for conflicting declarations of log1p
# https://gitlab.com/libeigen/eigen/-/commit/d55d392e7b1136655b4223bea8e99cb2fe0a8afd.patch
Patch0:         eigen3_logp.patch

BuildRequires:  %{blaslib}-devel
BuildRequires:  fftw-devel
BuildRequires:  glew-devel
BuildRequires:  gmp-devel
BuildRequires:  gsl-devel
BuildRequires:  mpfr-devel
BuildRequires:  sparsehash-devel
BuildRequires:  suitesparse-devel
BuildRequires:  gcc-gfortran
BuildRequires:  SuperLU-devel
%if %{with qt}
BuildRequires:  qt-devel
%endif
BuildRequires:  scotch-devel
BuildRequires:  metis-devel

BuildRequires:  cmake
BuildRequires:  make
BuildRequires:  gcc-c++
BuildRequires:  doxygen
BuildRequires:  graphviz
BuildRequires:  tex(latex)

%description
%{summary}.


%package devel
Summary:        A lightweight C++ template library for vector and matrix math
BuildArch:      noarch
# -devel subpkg only atm, compat with other distros
Provides:       %{name} = %{version}-%{release}
# not *strictly* a -static pkg, but the results are the same
Provides:       %{name}-static = %{version}-%{release}

%description devel
%{summary}.

%package doc
Summary:        Developer documentation for Eigen
Requires:       %{name}-devel = %{version}-%{release}
BuildArch:      noarch

%description doc
Developer documentation for Eigen.

%global __cmake_in_source_build 1

%prep
%autosetup -p1 -n eigen-%{version}


%build
mkdir -p build
pushd build
%cmake .. \
    -DINCLUDE_INSTALL_DIR=include/%{name} \
    %{cmake_blas_flags} \
    -DSUPERLU_INCLUDES=%{_includedir}/SuperLU \
    -DSCOTCH_INCLUDES=%{_includedir} -DSCOTCH_LIBRARIES="scotch" \
    -DMETIS_INCLUDES=%{_includedir} -DMETIS_LIBRARIES="metis" \
    -DCMAKEPACKAGE_INSTALL_DIR=share/cmake/%{name}

%cmake_build
%cmake_build --target doc

rm -f doc/html/installdox
rm -f doc/html/unsupported/installdox
popd

%install
pushd build
%cmake_install
popd


%files devel
%license COPYING.README COPYING.BSD COPYING.MPL2 COPYING.LGPL COPYING.MINPACK
%{_includedir}/%{name}
%{_datadir}/cmake/%{name}
%{_datadir}/pkgconfig/%{name}.pc

%files doc
%doc build/doc/html


%changelog
* Wed Jul 28 2021 Balint Cristian <cristian.balint@gmail.com> - 3.3.9-20210728
- Rebuild for rhel 8

* Wed Jul 21 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.3.9-7
- Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild