# Armadillo 14.x as a PARALLEL-INSTALLABLE versioned package, the way gcc ships gcc13/gcc14:
# it installs next to the default `armadillo` (15.x) without sharing a single file.
#
# Why it exists. Armadillo's soname is its major version, so the runtime libraries
# (libarmadillo.so.14 / .15) never collide. The headers and the dev symlink would, so this
# package keeps its own:
#
#     headers        /usr/include/armadillo14/{armadillo,armadillo_bits/}     -I/usr/include/armadillo14
#     dev link       /usr/lib64/armadillo14/libarmadillo.so                   -L/usr/lib64/armadillo14
#     pkg-config     armadillo14.pc                                           pkg-config --cflags --libs armadillo14
#     CMake          /usr/share/Armadillo14/CMake/Armadillo14Config.cmake     find_package(Armadillo14 CONFIG)
#
# Who needs 14 and not 15: FSL. armawrap vendors Armadillo 14.2.1, so this is the unbundling
# target that matches what FSL was written and tested against (14.6.3 is the newest 14.x, same
# major, bugfixes only), while `armadillo` stays the distro default for everything else.
# Anything that is happy with 15.x should use `armadillo-devel` and ignore this package.
#
# Everything about the build mirrors armadillo.spec: FlexiBLAS, SuperLU enabled and asserted,
# HDF5 an upstream opt-in. tests/armadillo.bats (ARMA_PKG=armadillo14) and
# tests/armadillo-parallel.bats are the acceptance suites.

Name:           armadillo14
Version:        14.6.3
Release:        1%{?dist}
Summary:        Fast C++ matrix library, 14.x series (parallel-installable with armadillo)

License:        Apache-2.0
URL:            https://arma.sourceforge.net/
Source0:        https://sourceforge.net/projects/arma/files/armadillo-%{version}.tar.xz

BuildRequires:  gcc-c++
BuildRequires:  cmake
BuildRequires:  make
BuildRequires:  arpack-devel
BuildRequires:  hdf5-devel
BuildRequires:  SuperLU-devel
BuildRequires:  flexiblas-devel

%description
Armadillo is a C++ linear algebra library (matrix maths) aiming towards a good balance
between speed and ease of use. This is the 14.x series, installable alongside the default
armadillo package: its headers are in /usr/include/armadillo14 and its development link in
/usr/lib64/armadillo14, selected with -I/-L or pkg-config armadillo14.

%package devel
Summary:        Development files for the Armadillo 14.x C++ library
Requires:       %{name}%{?_isa} = %{version}-%{release}
Requires:       libstdc++-devel
Requires:       arpack-devel
Requires:       hdf5-devel
Requires:       SuperLU-devel
Requires:       flexiblas-devel

%description devel
Headers, the development link, pkg-config and CMake files and the documentation for the
Armadillo 14.x series. Does not conflict with armadillo-devel.

%prep
%autosetup -n armadillo-%{version} -p1
sed -i 's/\r//' README.md
rm -rf examples/*win64*

%build
export CMAKE_POLICY_VERSION_MINIMUM=3.5
%cmake -DALLOW_FLEXIBLAS_LINUX=ON -DCMAKE_INSTALL_INCLUDEDIR=include/armadillo14
%cmake_build

%install
%cmake_install

# --- make every dev-time path versioned so nothing collides with armadillo-devel ----------
# 1. the unversioned dev link moves into its own directory
mkdir -p %{buildroot}%{_libdir}/armadillo14
rm -f %{buildroot}%{_libdir}/libarmadillo.so
ln -s ../libarmadillo.so.14 %{buildroot}%{_libdir}/armadillo14/libarmadillo.so

# 2. pkg-config: a different file name, and a -L that finds the versioned dev link
mv %{buildroot}%{_libdir}/pkgconfig/armadillo.pc %{buildroot}%{_libdir}/pkgconfig/armadillo14.pc
sed -i -e 's|^Name: armadillo$|Name: armadillo14|' \
       -e 's|^libdir=.*|libdir=%{_libdir}/armadillo14|' \
       %{buildroot}%{_libdir}/pkgconfig/armadillo14.pc

# 3. CMake: Armadillo14Config.cmake in Armadillo14/CMake, so find_package(Armadillo14 CONFIG) works
#    and find_package(Armadillo) still finds the default package.
mv %{buildroot}%{_datadir}/Armadillo %{buildroot}%{_datadir}/Armadillo14
cm=%{buildroot}%{_datadir}/Armadillo14/CMake
mv "$cm/ArmadilloConfig.cmake"        "$cm/Armadillo14Config.cmake"
mv "$cm/ArmadilloConfigVersion.cmake" "$cm/Armadillo14ConfigVersion.cmake"
sed -i -e 's|"%{_includedir}"|"%{_includedir}/armadillo14"|' \
       -e 's|"%{_libdir}"|"%{_libdir}/armadillo14"|' \
       -e 's|%{_datadir}/Armadillo/CMake|%{_datadir}/Armadillo14/CMake|g' \
       "$cm/Armadillo14Config.cmake"

# --- assertions: this package is only worth shipping if all of the above is true -----------
cfg=%{buildroot}%{_includedir}/armadillo14/armadillo_bits/config.hpp
for d in ARMA_USE_WRAPPER ARMA_USE_LAPACK ARMA_USE_BLAS ARMA_USE_ARPACK ARMA_USE_SUPERLU; do
    grep -Eq "^[[:space:]]*#define[[:space:]]+${d}\b" "$cfg" || { echo "config.hpp does not define ${d}" >&2; exit 1; }
done
# nothing may land in a path the default package owns
test ! -e %{buildroot}%{_includedir}/armadillo
test ! -e %{buildroot}%{_includedir}/armadillo_bits
test ! -e %{buildroot}%{_libdir}/libarmadillo.so
test ! -e %{buildroot}%{_libdir}/pkgconfig/armadillo.pc
test ! -e %{buildroot}%{_datadir}/Armadillo

%check
%global _vpath_builddir %{_vpath_builddir}-test
export CMAKE_POLICY_VERSION_MINIMUM=3.5
%cmake -DALLOW_FLEXIBLAS_LINUX=ON -DBUILD_SMOKE_TEST=ON
%cmake_build
%ctest

%files
%{_libdir}/libarmadillo.so.14*
%license LICENSE.txt NOTICE.txt

%files devel
%dir %{_libdir}/armadillo14
%{_libdir}/armadillo14/libarmadillo.so
%{_libdir}/pkgconfig/armadillo14.pc
%{_includedir}/armadillo14/
%{_datadir}/Armadillo14/
%doc README.md
%doc index.html
%doc docs.html
%doc examples

%changelog
* Mon Oct 05 2026 Morgan Hough <morgan.hough@gmail.com> - 14.6.3-1
- New parallel-installable versioned package, after gcc's gcc13/gcc14 model: the 14.x series
  installs next to the default armadillo (15.x). Runtime libraries differ by soname; headers,
  the dev link, pkg-config and CMake files are all versioned (armadillo14).
- Purpose: the unbundling target for FSL, whose armawrap vendors Armadillo 14.2.1.