# This flag prevents internal links
%undefine _ld_as_needed

%global post_release 1

%if 0%{?post_release}
%global  commit      a6e6a2cfa92f93a3ee2971ebc9ddfc3b0b581ab2
%global  date        20250704git
%global  shortcommit %(c=%{commit}; echo ${c:0:7})
%else
%global  commit      %{nil}
%global  date        %{nil}
%global  shortcommit %{nil}
%endif

%if %{?__isa_bits:%{__isa_bits}}%{!?__isa_bits:32} == 64
%global arch64 1
%else
%global arch64 0
%endif

Name:    metis
Version: 5.2.1
Release: %autorelease -s %{date}git%{shortcommit}
Summary: Serial Graph Partitioning and Fill-reducing Matrix Ordering
License: ASL 2.0 AND LGPL-2.0-or-later
URL:     https://github.com/KarypisLab/METIS
%if 0%{?post_release}
Source0: https://github.com/KarypisLab/METIS/archive/%{commit}/METIS-%{commit}.tar.gz
%else
Source0: https://github.com/KarypisLab/METIS/archive/%{version}/METIS-%{version}.tar.gz
%endif

Patch0: %{name}-%{version}-installation.patch
Patch1: %{name}-%{version}-set_metis_header.patch

## Rename library of 64 integer version
Patch4: %{name}-%{version}_lib64.patch
Patch2: %{name}-%{version}-set_metis64_header.patch

# Remove pre-included arch-specific flags
Patch5: %{name}-%{version}-specific_architecture_flags.patch

Patch6: %{name}-%{version}-set_cmake_config.patch

BuildRequires: make
BuildRequires: cmake
BuildRequires: gcc
BuildRequires: gcc-c++
BuildRequires: pcre-devel
BuildRequires: help2man
BuildRequires: chrpath
BuildRequires: GKlib-devel

%description
METIS is a set of serial programs for partitioning graphs, 
partitioning finite element meshes, and producing fill reducing 
orderings for sparse matrices. 
The algorithms implemented in METIS are based on the multilevel 
recursive-bisection, multilevel k-way, and multi-constraint 
partitioning schemes developed in our lab.
METIS is distributed with OpenMP support.

%package devel
Summary: METIS headers and development-related files
Requires: %{name}%{?_isa} = %{version}-%{release}
%description devel
Header and library files of Metis.

%if 0%{?arch64}
%package -n metis64
Summary: Serial Graph Partitioning and Fill-reducing Matrix Ordering (64bit INTEGER)

%description -n metis64
METIS is a set of serial programs for partitioning graphs, 
partitioning finite element meshes, and producing fill reducing 
orderings for sparse matrices. 
The algorithms implemented in METIS are based on the multilevel 
recursive-bisection, multilevel k-way, and multi-constraint 
partitioning schemes developed in our lab.
METIS is distributed with OpenMP support.
This build has 64bit INTEGER support.

%package -n metis64-devel
Summary: METIS development libraries (64bit INTEGER)
Requires: metis64%{?_isa} = %{version}-%{release}

%description -n metis64-devel
Header and library files of Metis,
OpenMP version (64bit INTEGER).
%endif

%prep
%setup -qc
 
pushd METIS-%{commit}
%patch -P 0 -p1 -b .backup
%patch -P 1 -p1 -b .backup
%patch -P 5 -p1 -b .backup
%patch -P 6 -p1 -b .backup
popd

%if 0%{?arch64}
cp -a METIS-%{commit} metis64
pushd metis64
%patch -P 4 -p1 -b .backup
popd
%endif

%build
PCRE_LDFLAGS="-lpcreposix"
GK_LDFLAGS="-lGKlib"
%cmake -S METIS-%{commit} -B METIS-%{commit} \
%if "%{?_lib}" == "lib64"
 %{?_cmake_lib_suffix64} \
%endif
 -DCMAKE_BUILD_TYPE:STRING=Release \
 -DCMAKE_SKIP_INSTALL_RPATH:BOOL=ON \
 -DGKLIB_PATH=%{_prefix} \
 -DSHARED:BOOL=ON \
 -DOPENMP:BOOL=ON \
 -DPCRE:BOOL=ON \
 -DVALGRIND:BOOL=ON \
 -DCMAKE_C_FLAGS:STRING="%{optflags} -I../include" \
 -DCMAKE_SHARED_LINKER_FLAGS_RELEASE:STRING="%{__global_ldflags} ${PCRE_LDFLAGS} ${GK_LDFLAGS}" \
 -DCMAKE_EXE_LINKER_FLAGS_RELEASE:STRING="%{__global_ldflags} ${PCRE_LDFLAGS} ${GK_LDFLAGS}" \
 -DCMAKE_VERBOSE_MAKEFILE:BOOL=TRUE \
 -DCMAKE_INSTALL_PREFIX:PATH=%{_prefix}

%define __cmake_builddir METIS-%{commit}
%cmake_build

%if 0%{?arch64}
PCRE_LDFLAGS="-lpcreposix"
GK_LDFLAGS="-lGKlib"
%cmake -S metis64 -B metis64 \
%if "%{?_lib}" == "lib64"
 %{?_cmake_lib_suffix64} \
%endif
 -DCMAKE_BUILD_TYPE:STRING=Release \
 -Dintsize:STRING=64 -Drealsize:STRING=64 \
 -DGKLIB_PATH=%{_prefix} \
 -DCMAKE_SKIP_INSTALL_RPATH:BOOL=YES\
 -DSHARED:BOOL=ON \
 -DOPENMP:BOOL=ON \
 -DPCRE:BOOL=ON \
 -DCMAKE_C_FLAGS:STRING="%{optflags} -I../include" \
 -DCMAKE_SHARED_LINKER_FLAGS_RELEASE:STRING="%{__global_ldflags} $PCRE_LDFLAGS ${GK_LDFLAGS}" \
 -DCMAKE_EXE_LINKER_FLAGS_RELEASE:STRING="%{__global_ldflags} $PCRE_LDFLAGS ${GK_LDFLAGS}" \
 -DCMAKE_VERBOSE_MAKEFILE:BOOL=TRUE \
 -DCMAKE_INSTALL_PREFIX:PATH=%{_prefix}

%define __cmake_builddir metis64
%cmake_build

pushd metis64
mv include/metis.h include/metis64.h
patch -p1 < %{PATCH2}
popd
%endif

%install
%define __cmake_builddir METIS-%{commit}
%cmake_install
mkdir -p %{buildroot}%{_includedir}

## Generate manpages from binaries
LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
help2man --version-string="%{version}" -n "Partitions a graph into a specified number of parts." \
 -N --output="gpmetis.1" --no-discard-stderr --help-option="-help" %{buildroot}%{_bindir}/gpmetis

LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
help2man --version-string="%{version}" \
 -n "Computes a fill-reducing ordering of the vertices of the graph using multilevel nested dissection." \
 -N --output="ndmetis.1" --no-discard-stderr --help-option="-help" %{buildroot}%{_bindir}/ndmetis

LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
help2man --version-string="%{version}" -n "Partitions a mesh into a specified number of parts." \
 -N --output="mpmetis.1" --no-discard-stderr --help-option="-help" %{buildroot}%{_bindir}/mpmetis

LD_PRELOAD=%{buildroot}%{_libdir}/lib%{name}.so.0 \
help2man --version-string="%{version}" -n "Converts a mesh into a graph that is compatible with METIS." \
 -N --output="m2gmetis.1" --no-discard-stderr -h "-help" %{buildroot}%{_bindir}/m2gmetis

mkdir -p %{buildroot}%{_mandir}/man1
mv *.1 %{buildroot}%{_mandir}/man1

# Save metis.h
install -pm 644 METIS-%{commit}/include/metis.h %{buildroot}%{_includedir}/

%if 0%{?arch64}
%define __cmake_builddir metis64
%cmake_install
# Save metis64.h
install -pm 644 metis64/include/metis64.h %{buildroot}%{_includedir}/
%endif

## Remove rpaths
chrpath -d %{buildroot}%{_bindir}/*

%check
cp -p %{buildroot}%{_bindir}/*metis METIS-%{commit}/graphs/
cp -p %{buildroot}%{_bindir}/graphchk METIS-%{commit}/graphs/
pushd METIS-%{commit}/graphs
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./ndmetis mdual.graph
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./mpmetis metis.mesh 2
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./gpmetis test.mgraph 4
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./gpmetis copter2.graph 4
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./graphchk 4elt.graph
popd
%if 0%{?arch64}
cp -p %{buildroot}%{_bindir}/*metis64 metis64/graphs/
cp -p %{buildroot}%{_bindir}/graphchk64 metis64/graphs/
pushd metis64/graphs
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./ndmetis64 mdual.graph
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./mpmetis64 metis.mesh 2
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./gpmetis64 test.mgraph 4
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./gpmetis64 copter2.graph 4
LD_LIBRARY_PATH=%{buildroot}%{_libdir}:$LD_LIBRARY_PATH ./graphchk64 4elt.graph
popd
%endif

%files
%doc METIS-%{commit}/Changelog METIS-%{commit}/manual/manual.pdf
%license METIS-%{commit}/LICENSE
%{_bindir}/cmpfillin
%{_bindir}/gpmetis
%{_bindir}/graphchk
%{_bindir}/m2gmetis
%{_bindir}/mpmetis
%{_bindir}/ndmetis
%{_mandir}/man1/*.1.gz
%{_libdir}/lib%{name}.so.0

%files devel
%{_includedir}/%{name}.h
%{_libdir}/lib%{name}.so

%if 0%{?arch64}
%files -n metis64
%doc metis64/Changelog metis64/manual/manual.pdf
%license metis64/LICENSE
%{_bindir}/cmpfillin64
%{_bindir}/gpmetis64
%{_bindir}/graphchk64
%{_bindir}/m2gmetis64
%{_bindir}/mpmetis64
%{_bindir}/ndmetis64
%{_libdir}/lib%{name}64.so.0

%files -n metis64-devel
%{_includedir}/%{name}64.h
%{_libdir}/lib%{name}64.so
%endif

%changelog
%autochangelog