Name:           libntruprime
Version:        20241021
Release:        1%{?dist}
Summary:        Streamlined NTRU Prime key encapsulation library
License:        LicenseRef-Fedora-Public-Domain OR 0BSD OR MIT-0 OR MIT
URL:            https://libntruprime.cr.yp.to/
Source:         https://libntruprime.cr.yp.to/libntruprime-%{version}.tar.gz

BuildRequires:  gcc
BuildRequires:  make
BuildRequires:  python3
BuildRequires:  libcpucycles-devel
BuildRequires:  librandombytes-devel
# Builds the constant-time checks and runs the tests under valgrind where it is available.
%ifarch %{valgrind_arches}
BuildRequires:  valgrind
BuildRequires:  valgrind-devel
%else
%global no_valgrind --no-valgrind
%endif
# Its tests check the compiled machine instructions.
BuildRequires:  python3-capstone

%description
libntruprime is a microlibrary for the Streamlined NTRU Prime post-quantum key
encapsulation mechanism, with command-line tools for each parameter set.

%package devel
Summary:        Development files for libntruprime
Requires:       %{name}%{?_isa} = %{version}-%{release}
Requires:       librandombytes-devel%{?_isa}

%description devel
libntruprime headers and other development files.

%package static
Summary:        Static version of the libntruprime library
Requires:       %{name}-devel%{?_isa} = %{version}-%{release}

%description static
Statically linkable version of the libntruprime library.

%prep
%autosetup

%build
# The build tries every compiler in compilers/ (one per CPU feature level); pass Fedora's flags to
# all of them through a gcc wrapper, and disable clang, as the Debian packaging does.
mkdir -p .rpm-cc
printf '#!/bin/sh\nexec /usr/bin/gcc %s "$@"\n' '%{build_cflags} %{build_ldflags}' > .rpm-cc/gcc
printf '#!/bin/sh\nexit 1\n' > .rpm-cc/clang
chmod +x .rpm-cc/*
export PATH=$PWD/.rpm-cc:$PATH
./configure --prefix=%{_prefix} %{?no_valgrind}
%make_build

%install
cd build/0/package
install -d %{buildroot}{%{_libdir},%{_includedir},%{_bindir},%{_mandir}/man1,%{_mandir}/man3}
cp -P lib/libntruprime.so.1 lib/libntruprime.so lib/libntruprime.a %{buildroot}%{_libdir}/
chmod 755 %{buildroot}%{_libdir}/libntruprime.so.1
install -m 644 include/ntruprime.h %{buildroot}%{_includedir}/
install -m 755 bin/* %{buildroot}%{_bindir}/
install -m 644 man/man1/*.1 %{buildroot}%{_mandir}/man1/
install -m 644 man/man3/*.3 %{buildroot}%{_mandir}/man3/

%check
# Upstream supports a compiled library only if it passes its test suite.
LD_LIBRARY_PATH=$PWD/build/0/package/lib ./build/0/package/bin/ntruprime-test

%files
%license doc/license.md
%doc doc/readme.md
%{_libdir}/libntruprime.so.1
%{_bindir}/ntruprime-*
%{_bindir}/sntrup*
%{_mandir}/man1/ntruprime-*.1*
%{_mandir}/man1/sntrup*.1*

%files devel
%{_includedir}/ntruprime.h
%{_libdir}/libntruprime.so
%{_mandir}/man3/*.3*

%files static
%{_libdir}/libntruprime.a

%changelog
* Sat Oct 03 2026 Sheldon Knuth <sheldon@citi.sinica.edu.tw> - 20241021-1
- Package libntruprime for the PQConnect COPR, following Fedora's libcpucycles