%global pkgvers 0
%global scdate0 20241213
%global sctags0 v20.0.0.dev0
%global source0 https://github.com/halide/Halide.git

Name:           halide
Version:        20.0.0
Release:        %{scdate0}.%{pkgvers}%{?dist}
Summary:        A language for image processing and computational photography
License:        MIT

URL:            https://halide-lang.org

Patch0:         halide-sover.patch
Patch1:         halide-gcc11.patch

BuildRequires:  git cmake doxygen python3-devel pybind11-devel libffi-devel ncurses-devel
BuildRequires:  llvm-devel lld-devel clang-devel libglvnd-devel zlib-devel libpng-devel
BuildRequires:  eigen3-devel openblas-devel openblas-openmp libjpeg-turbo-devel libffi-devel
%if 0%{?rhel}
%ifarch ppc64le
BuildRequires:  git
%endif
%endif

%ifarch ppc64le
%global toolchain clang
%else
%global toolchain gcc
%endif

%if "%{toolchain}" == "gcc"
BuildRequires:  gcc-c++
%else
BuildRequires:  clang
%endif

%global __cmake_in_source_build 1

%description
Halide is a programming language designed to make it easier to write
high-performance image processing code on modern machines. Halide currently
targets X86, ARM, CUDA, OpenCL, and OpenGL on OS X, Linux, and Windows.

%package        devel
Summary:        Development files for Halide
Requires:       %{name} = %{version}-%{release}
Requires:       %{name}-python3 = %{version}-%{release}

%description    devel
This package contains development files for Halide.

%package        python3
Summary:        Python bindings for Halide
Requires:       %{name} = %{version}-%{release}

%description    python3
This package contains python bindings for Halide.


%prep
%setup -T -c -n %{name}
git clone --depth 1 -n -b %{sctags0} %{source0} .
git reset --hard %{sctags0}
git log --format=fuller
# fixes
find . -regex '.*\.\(cmake\|txt\|py\)' -exec sed -i -e 's|VERSION 3.22|VERSION 3.20|' {} +
sed -i -e '/set(dummy_file/,/Copy/d' python_bindings/src/halide/CMakeLists.txt
sed -i -e 's|-Wcast-qual|-Wcast-qual -fPIC|g' CMakeLists.txt
sed -i -e 's|-Wcast-qual|-Wcast-qual -fPIC|g' src/CMakeLists.txt
sed -i -e 's|--system-libs --link-static|--libs|' CMakeLists.txt
sed -i -e 's|-Wall -Werror||g' src/CMakeLists.txt
sed -i -e 's|CLANG)|CLANG_DUMMY)|' CMakeLists.txt
sed -i -e 's|PUBLIC Halide::LanguageOptions|PUBLIC Halide::LanguageOptions LLVM|' src/CMakeLists.txt
sed -i -e 's|llvm_map_components_to_libnames|#llvm_map_components_to_libnames|' dependencies/llvm/CMakeLists.txt
sed -i -e 's|FATAL_ERROR "LLVM version must|WARNING "LLVM version must|g' dependencies/llvm/CMakeLists.txt
sed -i -e 's|Eigen3::Eigen||g' apps/linear_algebra/benchmarks/CMakeLists.txt
sed -i -e 's|Halide_PyStubs STATIC|Halide_PyStubs SHARED|' python_bindings/stub/CMakeLists.txt
sed -i -e 's|FATAL_ERROR "Halide requires Python|WARNING "Halide requires Python|g' python_bindings/CMakeLists.txt


echo "" >> util/CMakeLists.txt
echo "target_link_libraries(HalideTraceViz PRIVATE LLVM)" >> util/CMakeLists.txt
echo "target_link_libraries(HalideTraceDump PRIVATE LLVM)" >> util/CMakeLists.txt
echo "" >> apps/interpolate/CMakeLists.txt
echo "target_link_libraries(interpolate PRIVATE LLVM)" >> apps/interpolate/CMakeLists.txt

%ifarch ppc64le
sed -i 's|internal_error << "Warning: module|user_warning << "Warning: module|' src/LLVM_Output.cpp
%endif
# pybind11 pinned version
sed -i -e 's|${PYBIND11_VER} REQUIRED||' python_bindings/CMakeLists.txt


%build
mkdir build
pushd build

%global optflags %(echo "%{optflags} -I/usr/include/eigen3 -fPIC")
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:%{_builddir}/halide/build/src/
%cmake .. \
       -DCMAKE_SKIP_RPATH=ON \
       -DCMAKE_VERBOSE_MAKEFILE=OFF \
       -DCMAKE_BUILD_TYPE=RelWithDebInfo \
       -DPython3_EXECUTABLE=%{python3} \
       -DWARNINGS_AS_ERRORS=OFF \
       -DCMAKE_LD_FLAGS="-fPIC -lopenblaso -lLLVM" \
       -DHalide_SHARED_LLVM=ON \
       -DWITH_WABT=OFF \
       -DWITH_WASM_SHELL=OFF \
       -DTARGET_WEBASSEMBLY=OFF \
       -DWITH_PYTHON_BINDINGS=ON \
       -DPYBIND11_USE_FETCHCONTENT=OFF \
       -DWITH_DOCS=ON \
       -DWITH_TESTS=OFF \
       -DWITH_TUTORIALS=OFF \
       -DWITH_UTILS=ON
make %{?_smp_mflags}
popd


%install
pushd build
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:%{_builddir}/halide/build/src/
make install DESTDIR=%{buildroot}
popd

# python
mkdir -p %{buildroot}/%{python3_sitearch}/%{name}
install -D -pm 755 $f build/python_bindings/src/%{name}/RelWithDebInfo/%{name}/*.so \
                      %{buildroot}/%{python3_sitearch}/%{name}/
sed -i 's|${_IMPORT_PREFIX}/lib64/python.*/site-packages|%{python3_sitearch}|g' \
                      %{buildroot}/%{_libdir}/cmake/Halide/*.cmake

# fix paths
echo "set(Halide_LIBRARIES \"Halide\")" >> %{buildroot}%{_libdir}/cmake/Halide/HalideConfig.cmake
echo "set(Halide_INCLUDE_DIRS \"/usr/include\")" >> %{buildroot}%{_libdir}/cmake/Halide/HalideConfig.cmake

# clean junks
rm -rf %{buildroot}%{_datadir}/*
rm -rf %{buildroot}%{_libdir}/*.a
# relocate path
rm -rf %{buildroot}/%{_libdir}/python3


%ldconfig_scriptlets


%files
%defattr(-,root,root,-)
%doc LICENSE.txt
%doc tutorial
%doc build/doc
%{_bindir}/*
%{_libdir}/*.so.*

%files devel
%{_includedir}/*
%{_libdir}/*.so
%{_libdir}/cmake/*

%files python3
%{python3_sitearch}/*


%changelog
* Sun Mar 19 2017 Balint Cristian <cristian.balint@gmail.com>
- github upstream releases