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+%define anolis_release 1
+
+%undefine _package_note_flags
+%ifarch %{ocaml_native_compiler}
+%global native_compiler 1
+%else
+%global native_compiler 0
+%endif
+
+Name:          ocaml-labltk
+Version:       8.06.13
+Release:       %{anolis_release}%{?dist}
+Summary:       Tcl/Tk interface for OCaml
+License:       LGPLv2+ with exceptions
+URL:           https://github.com/garrigue/labltk
+Source0:       https://github.com/garrigue/labltk/archive/%{version}/labltk-%{version}.tar.gz
+
+BuildRequires: make
+BuildRequires: ocaml
+BuildRequires: ocaml-srpm-macros
+BuildRequires: tcl-devel, tk-devel
+
+%description
+labltk or mlTk is a library for interfacing OCaml with the scripting
+language Tcl/Tk (all versions since 8.0.3, but no betas).
+
+%package devel
+Summary:       Tcl/Tk interface for OCaml
+Requires:      %{name} = %{version}-%{release}
+
+%description devel
+labltk or mlTk is a library for interfacing OCaml with the scripting
+language Tcl/Tk (all versions since 8.0.3, but no betas).
+
+This package contains the development files.
+
+%package doc
+Summary:        Documentation files for %{name}
+Requires:       %{name} = %{EVR}
+BuildArch:      noarch
+
+%description doc
+The %{name}-doc package contains documentation files for %{name}.
+
+%prep
+%setup -q -n labltk-%{version}
+
+# Remove version control files which might get copied into documentation.
+find -name .gitignore -delete
+
+# Kill -warn-error.
+find -type f | xargs sed -i -e 's/-warn-error/-w/g'
+
+# Don't build ocamlbrowser.
+mv browser browser.old
+mkdir browser
+echo -e 'all:\ninstall:\n' > browser/Makefile
+
+%build
+./configure -verbose
+
+# Build does not work in parallel.
+unset MAKEFLAGS
+
+%if !%{native_compiler}
+make byte
+%else
+make all opt \
+     SHAREDCCCOMPOPTS="%{optflags} -fPIC" \
+     TK_LINK="%{__global_ldflags} -ltk8.6 -ltcl8.6"
+%endif
+
+%install
+mkdir -p $RPM_BUILD_ROOT%{_bindir}
+mkdir -p $RPM_BUILD_ROOT%{_libdir}/ocaml/labltk
+mkdir -p $RPM_BUILD_ROOT%{_libdir}/ocaml/stublibs
+make install \
+    BINDIR=$RPM_BUILD_ROOT%{_bindir} \
+    INSTALLDIR=$RPM_BUILD_ROOT%{_libdir}/ocaml/labltk \
+    STUBLIBDIR=$RPM_BUILD_ROOT%{_libdir}/ocaml/stublibs \
+    RANLIB=:
+%if %{native_compiler}
+# The *.o files are not installed by the Makefile.  AIUI
+# that prevents linking with native code programs.
+install -m 0644 camltk/*.o $RPM_BUILD_ROOT%{_libdir}/ocaml/labltk
+%endif
+
+%generate_compatibility_deps
+
+%files
+%dir %{_libdir}/ocaml/labltk
+%{_libdir}/ocaml/labltk/*.cmi
+%{_libdir}/ocaml/labltk/*.cma
+%{_libdir}/ocaml/labltk/*.cmo
+%{_libdir}/ocaml/stublibs/dlllabltk.so
+%dir %{abidir}
+%{abidir}/dlllabltk.dump
+
+%files devel
+%doc examples_camltk
+%doc examples_labltk
+%{_bindir}/labltk
+%{_libdir}/ocaml/labltk/labltktop
+%{_libdir}/ocaml/labltk/pp
+%{_libdir}/ocaml/labltk/tkcompiler
+%{_libdir}/ocaml/labltk/*.a
+%if %{native_compiler}
+%{_libdir}/ocaml/labltk/*.cmxa
+%{_libdir}/ocaml/labltk/*.cmx
+%{_libdir}/ocaml/labltk/*.o
+%endif
+%{_libdir}/ocaml/labltk/*.mli
+
+%files doc
+%doc Changes README.mlTk
+
+%changelog
+* Mon Mar 20 2023 Yuanhong Peng <yummypeng@linux.alibaba.com> - 8.06.13-1
+- Init from upstream