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diff --git a/llvm.spec b/llvm.spec
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@@ -0,0 +1,254 @@
+%bcond_without check
+
+%global maj_ver 15
+%global min_ver 0
+%global patch_ver 6
+
+%global pkg_name llvm%{maj_ver}
+%global bin_suffix -%{maj_ver}
+%global install_prefix %{_libdir}/%{name}
+%global install_bindir %{install_prefix}/bin
+%global install_includedir %{install_prefix}/include
+%global install_libdir %{install_prefix}/lib
+
+%global pkg_bindir %{install_bindir}
+%global pkg_includedir %{_includedir}/%{name}
+%global pkg_libdir %{install_libdir}
+
+%global max_link_jobs %{_smp_build_ncpus}
+%global targets_to_build "all"
+%global experimental_targets_to_build ""
+
+%global build_install_prefix %{buildroot}%{install_prefix}
+%global llvm_triple %{_host}
+
+Name:		%{pkg_name}
+Version:	%{maj_ver}.%{min_ver}.%{patch_ver}
+Release:	1
+Summary:	The Low Level Virtual Machine
+
+License:	NCSA
+URL:		http://llvm.org
+Source0:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/llvm-%{version}.src.tar.xz
+Source1:	https://github.com/llvm/llvm-project/releases/download/llvmorg-%{version}/cmake-%{version}.src.tar.xz
+
+BuildRequires:	binutils-devel
+BuildRequires:	cmake
+BuildRequires:	gcc
+BuildRequires:	gcc-c++
+BuildRequires:	libedit-devel
+BuildRequires:	libffi-devel
+BuildRequires:	multilib-rpm-config
+BuildRequires:	ncurses-devel
+BuildRequires:	ninja-build
+BuildRequires:	python3-devel
+BuildRequires:	python3-psutil
+BuildRequires:	python3-recommonmark
+BuildRequires:	python3-sphinx
+BuildRequires:	python3-setuptools
+BuildRequires:	zlib-devel
+
+Requires:	%{name}-libs%{?_isa} = %{version}-%{release}
+
+Provides:	llvm(major) = %{maj_ver}
+
+%description
+LLVM is a compiler infrastructure designed for compile-time, link-time,
+runtime, and idle-time optimization of programs from arbitrary programming
+languages. The compiler infrastructure includes mirror sets of programming
+tools as well as libraries with equivalent functionality.
+
+%package devel
+Summary:	Libraries and header files for LLVM
+Requires:	%{name}%{?_isa} = %{version}-%{release}
+Requires:	%{name}-libs%{?_isa} = %{version}-%{release}
+Requires:	libedit-devel
+Requires:	%{name}-static%{?_isa} = %{version}-%{release}
+
+Requires(post):	%{_sbindir}/alternatives
+Requires(postun):	%{_sbindir}/alternatives
+
+Provides:	llvm-devel(major) = %{maj_ver}
+
+%description devel
+This package contains library and header files needed to develop new native
+programs that use the LLVM infrastructure.
+
+%package doc
+Summary:	Documentation for LLVM
+BuildArch:	noarch
+Requires:	%{name} = %{version}-%{release}
+
+%description doc
+Documentation for the LLVM compiler infrastructure.
+
+%package libs
+Summary:	LLVM shared libraries
+
+%description libs
+Shared libraries for the LLVM compiler infrastructure.
+
+%package static
+Summary:	LLVM static libraries
+Conflicts:	%{name}-devel < 8
+
+Provides:	llvm-static(major) = %{maj_ver}
+
+%description static
+Static libraries for the LLVM compiler infrastructure.
+
+%prep
+%setup -T -q -b 1 -n cmake-%{version}.src
+cd ..
+mv cmake-%{version}.src cmake
+%autosetup -n llvm-%{version}.src
+
+pathfix.py -i %{__python3} -pn \
+	test/BugPoint/compile-custom.ll.py \
+	tools/opt-viewer/*.py \
+	utils/update_cc_test_checks.py
+
+%build
+mkdir -p _build
+cd _build
+
+%cmake	.. -G Ninja \
+	-DBUILD_SHARED_LIBS:BOOL=OFF \
+	-DLLVM_PARALLEL_LINK_JOBS=%{max_link_jobs} \
+	-DCMAKE_BUILD_TYPE=Release \
+	-DCMAKE_SKIP_RPATH:BOOL=ON \
+	-DLLVM_TARGETS_TO_BUILD=%{targets_to_build} \
+	-DLLVM_ENABLE_LIBCXX:BOOL=OFF \
+	-DLLVM_ENABLE_ZLIB:BOOL=ON \
+	-DLLVM_ENABLE_FFI:BOOL=ON \
+	-DLLVM_ENABLE_RTTI:BOOL=ON \
+	-DLLVM_USE_PERF:BOOL=ON \
+	-DLLVM_BINUTILS_INCDIR=%{_includedir} \
+	-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=%{experimental_targets_to_build} \
+	-DLLVM_BUILD_RUNTIME:BOOL=ON \
+	-DLLVM_INCLUDE_TOOLS:BOOL=ON \
+	-DLLVM_BUILD_TOOLS:BOOL=ON \
+	-DLLVM_INCLUDE_TESTS:BOOL=ON \
+	-DLLVM_BUILD_TESTS:BOOL=ON \
+	-DLLVM_LIT_ARGS=-v \
+	-DLLVM_INCLUDE_EXAMPLES:BOOL=ON \
+	-DLLVM_BUILD_EXAMPLES:BOOL=OFF \
+	-DLLVM_INCLUDE_UTILS:BOOL=ON \
+	-DLLVM_INSTALL_UTILS:BOOL=OFF \
+	-DLLVM_INCLUDE_DOCS:BOOL=ON \
+	-DLLVM_BUILD_DOCS:BOOL=ON \
+	-DLLVM_ENABLE_SPHINX:BOOL=ON \
+	-DLLVM_ENABLE_DOXYGEN:BOOL=OFF \
+	-DLLVM_BUILD_LLVM_DYLIB:BOOL=ON \
+	-DLLVM_LINK_LLVM_DYLIB:BOOL=ON \
+	-DLLVM_BUILD_EXTERNAL_COMPILER_RT:BOOL=ON \
+	-DLLVM_INSTALL_TOOLCHAIN_ONLY:BOOL=OFF \
+	-DLLVM_DEFAULT_TARGET_TRIPLE=%{llvm_triple} \
+	-DSPHINX_WARNINGS_AS_ERRORS=OFF \
+	-DCMAKE_INSTALL_PREFIX=%{install_prefix} \
+	-DLLVM_INSTALL_SPHINX_HTML_DIR=%{_pkgdocdir}/html \
+	-DSPHINX_EXECUTABLE=%{_bindir}/sphinx-build-3 \
+	-DLLVM_INCLUDE_BENCHMARKS=OFF
+
+%ninja_build LLVM
+%ninja_build
+
+%install
+%ninja_install -C _build
+
+mkdir -p %{buildroot}/%{_bindir}
+
+# Add version suffix to binaries
+for f in %{buildroot}/%{install_bindir}/*; do
+  filename=`basename $f`
+  ln -s ../../%{install_bindir}/$filename %{buildroot}/%{_bindir}/$filename%{bin_suffix}
+done
+
+# Move header files
+mkdir -p %{buildroot}/%{pkg_includedir}
+ln -s ../../../%{install_includedir}/llvm %{buildroot}/%{pkg_includedir}/llvm
+ln -s ../../../%{install_includedir}/llvm-c %{buildroot}/%{pkg_includedir}/llvm-c
+
+# Fix multi-lib
+%multilib_fix_c_header --file %{install_includedir}/llvm/Config/llvm-config.h
+
+# Create ld.so.conf.d entry
+mkdir -p %{buildroot}%{_sysconfdir}/ld.so.conf.d
+cat >> %{buildroot}%{_sysconfdir}/ld.so.conf.d/%{name}-%{_arch}.conf << EOF
+%{pkg_libdir}
+EOF
+
+mkdir -p %{buildroot}/%{_mandir}/man1
+for f in %{build_install_prefix}/share/man/man1/*; do
+  filename=`basename $f | cut -f 1 -d '.'`
+  mv $f %{buildroot}%{_mandir}/man1/$filename%{bin_suffix}.1
+done
+
+# Remove opt-viewer, since this is just a compatibility package.
+rm -Rf %{build_install_prefix}/share/opt-viewer
+
+rm %{buildroot}%{_bindir}/llvm-config%{bin_suffix}
+(cd %{buildroot}/%{pkg_bindir} ; ln -s llvm-config llvm-config%{bin_suffix}-%{__isa_bits} )
+
+touch %{buildroot}%{_bindir}/llvm-config%{bin_suffix}
+
+cp -Rv ../cmake/Modules/* %{buildroot}%{pkg_libdir}/cmake/llvm
+
+%check
+%if %{with check}
+LD_LIBRARY_PATH=%{buildroot}/%{pkg_libdir}  %{__ninja} check-all -C ./_build/
+%endif
+
+%ldconfig_scriptlets libs
+
+%post devel
+%{_sbindir}/update-alternatives --install %{_bindir}/llvm-config%{bin_suffix} llvm-config%{bin_suffix} %{pkg_bindir}/llvm-config%{bin_suffix}-%{__isa_bits} %{__isa_bits}
+
+%postun devel
+if [ $1 -eq 0 ]; then
+  %{_sbindir}/update-alternatives --remove llvm-config%{bin_suffix} %{pkg_bindir}/llvm-config%{bin_suffix}-%{__isa_bits}
+fi
+
+%files
+%license LICENSE.TXT
+%exclude %{_mandir}/man1/llvm-config*
+%{_mandir}/man1/*
+%{_bindir}/*
+%exclude %{_bindir}/llvm-config%{bin_suffix}
+%exclude %{pkg_bindir}/llvm-config%{bin_suffix}-%{__isa_bits}
+%{pkg_bindir}
+
+%files libs
+%license LICENSE.TXT
+%{pkg_libdir}/libLLVM-%{maj_ver}.so
+%config(noreplace) %{_sysconfdir}/ld.so.conf.d/%{name}-%{_arch}.conf
+%{_libdir}/%{name}/lib/LLVMgold.so
+%{pkg_libdir}/libLLVM-%{maj_ver}.%{min_ver}*.so
+%{pkg_libdir}/libLTO.so*
+%exclude %{pkg_libdir}/libLTO.so
+%{pkg_libdir}/libRemarks.so*
+
+%files devel
+%license LICENSE.TXT
+%ghost %{_bindir}/llvm-config%{bin_suffix}
+%{pkg_bindir}/llvm-config%{bin_suffix}-%{__isa_bits}
+%{_mandir}/man1/llvm-config*
+%{install_includedir}/llvm
+%{install_includedir}/llvm-c
+%{pkg_includedir}/llvm
+%{pkg_includedir}/llvm-c
+%{pkg_libdir}/libLTO.so
+%{pkg_libdir}/libLLVM.so
+%{pkg_libdir}/cmake/llvm
+
+%files doc
+%license LICENSE.TXT
+%doc %{_pkgdocdir}/html
+
+%files static
+%license LICENSE.TXT
+%{_libdir}/%{name}/lib/*.a
+
+%changelog
+* Mon Jan 2 2023 Chenxi Mao <chenxi.mao@suse.com> - 15.0.6-1
+- Package init