%global gittag        e2k-v1.2
%global e2k_target    e2k-linux-user
%global binfmt_dir    %{_exec_prefix}/lib/binfmt.d

Name:           qemu-e2k
Version:        1.2
Release:        1%{?dist}
Summary:        QEMU user-mode emulator for the Elbrus (e2k) architecture
License:        GPL-2.0-or-later AND LGPL-2.1-or-later AND BSD-2-Clause AND MIT
URL:            https://git.openelbrus.ru/mcst/qemu
Source0:        https://git.openelbrus.ru/mcst/qemu/-/archive/%{gittag}/qemu-%{gittag}.tar.bz2

BuildRequires:  gcc
BuildRequires:  make
BuildRequires:  git
BuildRequires:  bison
BuildRequires:  flex
BuildRequires:  meson
BuildRequires:  ninja-build
BuildRequires:  pkgconfig
BuildRequires:  python3-devel
BuildRequires:  python3-setuptools
BuildRequires:  python3-pip
BuildRequires:  python3-wheel
BuildRequires:  glib2-devel
BuildRequires:  pixman-devel
BuildRequires:  zlib-devel
BuildRequires:  libattr-devel
BuildRequires:  libcap-ng-devel
BuildRequires:  libseccomp-devel
BuildRequires:  glibc-static
BuildRequires:  glib2-static
BuildRequires:  zlib-static

%description
qemu-e2k is a linux-user-mode build of QEMU maintained by MCST
(git.openelbrus.ru), providing emulation of Linux applications built
for the Elbrus (e2k) instruction set, revisions elbrus-v2 through
elbrus-v6 (elbrus-v7 support is incomplete upstream).

%package -n qemu-user-e2k
Summary: QEMU user mode emulation of Elbrus (e2k)
%description -n qemu-user-e2k
This package provides the user mode emulation of Elbrus (e2k).


%package -n qemu-user-static-e2k
Summary:        Statically linked QEMU user-mode emulator for Elbrus (e2k)
License:        GPL-2.0-or-later AND LGPL-2.1-or-later AND BSD-2-Clause AND MIT

%description -n qemu-user-static-e2k
This package provides a statically linked build of qemu-e2k, useful
for copying into a chroot or container image without dragging in
qemu-e2k's shared-library dependencies.


%prep
%autosetup -n qemu-%{gittag}

%build
run_configure() {
    ../configure \
        --target-list=%{e2k_target} \
        --prefix="%{_prefix}" \
        --libdir="%{_libdir}" \
        --datadir="%{_datadir}" \
        --sysconfdir="%{_sysconfdir}" \
        --interp-prefix=%{_prefix}/qemu-%%M \
        --localstatedir="%{_localstatedir}" \
        --docdir="%{_docdir}" \
        --libexecdir="%{_libexecdir}" \
        --extra-cflags="%{optflags}" \
        --with-pkgversion="%{name}-%{version}-%{release}" \
        --disable-docs \
        "$@" \
    || ( cat meson-logs/meson-log.txt 2>/dev/null; cat config.log 2>/dev/null; exit 1 )
}

mkdir -p e2k_build
pushd e2k_build
run_configure
%make_build
popd

mkdir -p e2k_static_build
pushd e2k_static_build
run_configure --static
%make_build
popd


%install
install -D -p -m 0755 e2k_build/qemu-e2k %{buildroot}%{_bindir}/qemu-e2k

install -D -p -m 0755 e2k_static_build/qemu-e2k %{buildroot}%{_bindir}/qemu-e2k-static

# binfmt_misc registration for the dynamic build: no F flag, since the
# dynamic binary depends on the host's glibc/glib2 and cannot run inside
# a chroot/container of another architecture that lacks them. This is
# only useful for running e2k binaries directly on the host.
mkdir -p %{buildroot}%{binfmt_dir}
cat > %{buildroot}%{binfmt_dir}/qemu-e2k-dynamic.conf << 'EOF'
:qemu-e2k-dynamic:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xaf\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-e2k:OC
:qemu-e2k-old-dynamic:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x31\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-e2k:OC
EOF

# binfmt_misc registration for the static build: F flag, so the kernel
# holds the interpreter's fd open at registration time — this is what
# makes it usable inside chroots/containers of a foreign rootfs that
# doesn't have the host's shared libraries (debootstrap, buildx, etc.).
mkdir -p %{buildroot}%{binfmt_dir}
cat > %{buildroot}%{binfmt_dir}/qemu-e2k-static.conf << 'EOF'
:qemu-e2k-static:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xaf\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-e2k-static:OCF
:qemu-e2k-old-static:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x31\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-e2k-static:OCF
EOF

%post -n qemu-user-e2k
/bin/systemctl --system try-restart systemd-binfmt.service &>/dev/null || :
%postun -n qemu-user-e2k
/bin/systemctl --system try-restart systemd-binfmt.service &>/dev/null || :

%post -n qemu-user-static-e2k
/bin/systemctl --system try-restart systemd-binfmt.service &>/dev/null || :
%postun -n qemu-user-static-e2k
/bin/systemctl --system try-restart systemd-binfmt.service &>/dev/null || :


%files -n qemu-user-e2k
%license COPYING COPYING.LIB LICENSE
%doc README.md
%{_bindir}/qemu-e2k
%{binfmt_dir}/qemu-e2k-dynamic.conf

%files -n qemu-user-static-e2k
%license COPYING COPYING.LIB LICENSE
%{_bindir}/qemu-e2k-static
%{binfmt_dir}/qemu-e2k-static.conf


%changelog