Name:           libsemigroups
Version:        2.7.3
Release:        %autorelease
Summary:        C++ library for semigroups and monoids

# libsemigroups itself is GPL-3.0-or-later.
# TextFlow is BSL-1.0.
# All other licenses are due to use of eigen3.
License:        GPL-3.0-or-later AND BSL-1.0 AND MPL-2.0 AND BSD-3-Clause AND Apache-2.0
URL:            https://libsemigroups.readthedocs.io/
VCS:            https://github.com/libsemigroups/libsemigroups
Source0:        %{vcs}/archive/v%{version}/%{name}-%{version}.tar.gz

# See https://fedoraproject.org/wiki/Changes/EncourageI686LeafRemoval
ExcludeArch:    %{ix86}

BuildRequires:  catch2-devel
BuildRequires:  doxygen
BuildRequires:  gcc-c++
BuildRequires:  libtool
BuildRequires:  make
BuildRequires:  pkgconfig(eigen3)
BuildRequires:  pkgconfig(fmt)
BuildRequires:  python3-devel

%description
Libsemigroups is a C++ library for semigroups and monoids; it is partly
based on "Algorithms for computing finite semigroups", "Expository
Slides", and Semigroupe 2.01 by Jean-Eric Pin.

The libsemigroups library is used in the Semigroups package for GAP.

Some of the features of Semigroupe 2.01 are not yet implemented in
libsemigroups; this is a work in progress.  Missing features include
those for:

- Green's relations, or classes
- finding a zero
- minimal ideal, principal left/right ideals, or indeed any ideals
- inverses
- local submonoids
- the kernel
- variety tests.
These will be included in a future version.

Libsemigroups performs roughly the same as Semigroupe 2.01 when there is
a known upper bound on the size of the semigroup being enumerated, and
this is used to initialize the data structures for the semigroup; see
libsemigroups::Semigroup::reserve for more details.  Note that in
Semigroupe 2.01 it is always necessary to provide such an upper bound,
but in libsemigroups it is not.

Libsemigroups also has some advantages over Semigroupe 2.01:
- there is a (hopefully) convenient C++ API, which makes it relatively
  easy to create and manipulate semigroups and monoids
- there are some multithreaded methods for semigroups and their
  congruences
- you do not have to know/guess the size of a semigroup or monoid before
  you begin
- libsemigroups supports more types of elements than Semigroupe 2.01
- it is relatively straightforward to add support for further types of
  elements and semigroups
- it is possible to enumerate a certain number of elements of a
  semigroup or monoid (say if you are looking for an element with a
  particular property), to stop, and then to start the enumeration again
  at a later point
- you can instantiate as many semigroups and monoids as you can fit in
  memory
- it is possible to add more generators after a semigroup or monoid has
  been constructed, without losing or having to recompute any
  information that was previously known
- libsemigroups contains rudimentary implementations of the Todd-Coxeter
  and Knuth-Bendix algorithms for finitely presented semigroups, which
  can also be used to compute congruences of a (not necessarily finitely
  presented) semigroup or monoid.

%package devel
Summary:        Headers files for developing with %{name}
Requires:       %{name}%{?_isa} = %{version}-%{release}

%description devel
Header files for developing applications that use %{name}.

%package doc
# The content is GPL-3.0-or-later.  The other licenses are due to files added
# by Sphinx:
# - searchindex.js: BSD-2-Clause
# - _static/_sphinx_javascript_frameworks_compat.js: BSD-2-Clause
# - _static/basic.css: BSD-2-Clause
# - _static/check-solid.svg: MIT
# - _static/clipboard.min.js: MIT
# - _static/copy-button.svg: MIT
# - _static/copybutton.css: MIT
# - _static/copybutton.js: MIT
# - _static/copybutton_funcs.js: MIT
# - _static/css/badge_only.css: MIT
# - _static/css/theme.css: MIT
# - _static/doctools.js: BSD-2-Clause
# - _static/documentation_options.js: BSD-2-Clause
# - _static/file.png: BSD-2-Clause
# - _static/jquery*.js: MIT
# - _static/js/badge_only.js: MIT
# - _static/js/theme.js: MIT
# - _static/language_data.js: BSD-2-Clause
# - _static/minus.png: BSD-2-Clause
# - _static/plus.png: BSD-2-Clause
# - _static/searchtools.js: BSD-2-Clause
# - _static/underscore*.js: MIT
License:        GPL-3.0-or-later AND BSD-2-Clause AND MIT
Summary:        Documentation for %{name}
BuildArch:      noarch
Requires:       font(fontawesome)
Requires:       font(lato)
Requires:       font(robotoslab)

Provides:       bundled(js-jquery)
Provides:       bundled(js-underscore)

%description doc
Documentation for %{name}.

%prep
%autosetup -p1

# Unbundle catch2
rm tests/catch.hpp
ln -s %{_includedir}/catch2/catch.hpp tests

# Do not override Fedora build flags
sed -i 's/ -O3//' Makefile.am

# Fix the version number
sed -i 's,m4_esyscmd([^)]*),[%{version}],' configure.ac

# Generate the configure script
autoreconf -fi .

# Relax python version dependencies
sed -i 's/==/>=/g' docs/requirements.txt

%generate_buildrequires
%pyproject_buildrequires -N docs/requirements.txt

%build
# Hpcombi is an x86-specific library that uses SSE and AVX instructions.
# It is not currently available in Fedora, and we cannot assume the
# availability of AVX in any case.
%configure --disable-silent-rules --disable-static --disable-hpcombi \
  --enable-eigen --with-external-eigen --enable-fmt --with-external-fmt

# Get rid of undesirable hardcoded rpaths; workaround libtool reordering
# -Wl,--as-needed after all the libraries.
sed -e 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' \
    -e 's|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' \
    -e 's|CC="\(.*g..\)"|CC="\1 -Wl,--as-needed"|' \
    -i libtool

%make_build
%make_build doc
rst2html --no-datestamp README.rst README.html
rm docs/build/html/.buildinfo

%install
%make_install
rm -f %{buildroot}%{_libdir}/*.la

fixtimestamp() {
  touch -r $1.orig $1
  rm -f $1.orig
}

# Do not bundle the eigen3 headers
rm -fr %{buildroot}%{_includedir}/libsemigroups/Eigen

# Do not bundle the fmt headers
rm -fr %{buildroot}%{_includedir}/libsemigroups/fmt
sed -i.orig 's,"\(fmt/[[:alnum:]]*\.h\)",<\1>,g' \
    %{buildroot}%{_includedir}/libsemigroups/report.hpp
fixtimestamp %{buildroot}%{_includedir}/libsemigroups/report.hpp

%check
LD_LIBRARY_PATH=$PWD/.libs make check

%files
%doc README.html
%license LICENSE
%{_libdir}/%{name}.so.2
%{_libdir}/%{name}.so.2.*

%files devel
%{_includedir}/%{name}/
%{_libdir}/%{name}.so
%{_libdir}/pkgconfig/%{name}.pc

%files doc
%doc docs/build/html
%license LICENSE

%changelog
%autochangelog