diff --git a/splint.spec b/splint.spec
index b718672..f0d71ab 100644
--- a/splint.spec
+++ b/splint.spec
@@ -1,81 +1,73 @@
-%define prefix /usr
-%define ver    3.0.1.6
-Summary:   Splint - A tool for statically checking C programs
-Name:      splint
-Version:   %ver
-Release:   1
-Copyright: MIT
-Url:       http://www.splint.org
-
-Packager:  Heiko Abraham, abrahamh@web.de
-Group:     Development/Languages
-Source:    %{name}-%{ver}.src.tgz
-
-BuildRoot: /var/tmp/%{name}-%{PACKAGE_VERSION}-root
-Requires:  gcc
-
+# splint.spec
 
+Summary:        Splint - A tool for statically checking C programs
+Name:           splint
+Version:        3.1.2
+Release:        2%{?dist}
+License:        GPLv2+
+Url:            http://www.splint.org
 
+Group:          Development/Tools
+Source:         %{name}-%{version}.tar.gz
+BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}
+BuildRequires:  bison flex flex-devel gcc
 
+Obsoletes:      lclint <= 3.0.0
+Provides:       lclint = %{version}-%{release}
+Provides:       splint = %{version}-%{release}
+Provides:       splint(%{_arch}) = %{version}-%{release}
 
 %description
-Splint  is a tool for statically checking C programs for security vulnerabilities 
+Splint is a tool for statically checking C programs for security vulnerabilities 
 and common programming mistakes. With minimal effort, Splint can be used as a 
 better lint(1).If additional effort is invested adding  annotations  to  programs,  
 Splint can perform stronger checks than can be done by any standard lint.  For 
-full documentation, please see http://www.splint.org.  
+full documentation, please see http://www.splint.org.
 
 Please set environment variables:
-- LARCH_PATH=%{prefix}/share/splint/lib
+- LARCH_PATH=%{_datadir}/splint/lib
   and
-- LCLIMPORTDIR=%{prefix}/share/splint/imports
-.
+- LCLIMPORTDIR=%{_datadir}/splint/imports
 
 %prep
 %setup -q
+chmod 644 doc/manual.pdf     # TODO: this line should remove in the future
+cp -p src/.splintrc splintrc.demo
 
 %build
-CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=%{prefix}
-make
+test ! -f configure && ./bootstrap
+CFLAGS="$CFLAGS $RPM_OPT_FLAGS"
+%configure
+make -j `nproc`
 
 %install
 rm -rf $RPM_BUILD_ROOT
-mkdir -p $RPM_BUILD_ROOT%{prefix}/bin
-mkdir -p $RPM_BUILD_ROOT%{prefix}/share/doc/%{name}-%{PACKAGE_VERSION}
-mkdir -p $RPM_BUILD_ROOT%{prefix}/share/splint/imports
-mkdir -p $RPM_BUILD_ROOT%{prefix}/share/splint/lib
-mkdir -p $RPM_BUILD_ROOT%{prefix}/share/man/man1
-
-make DESTDIR=$RPM_BUILD_ROOT  install
-
-# now install docs, why 'make install' will not do this
-cp README     $RPM_BUILD_ROOT%{prefix}/share/doc/%{name}-%{PACKAGE_VERSION}
-cp doc/*.html $RPM_BUILD_ROOT%{prefix}/share/doc/%{name}-%{PACKAGE_VERSION}
-cp doc/*.pdf  $RPM_BUILD_ROOT%{prefix}/share/doc/%{name}-%{PACKAGE_VERSION}
-
-
+make DESTDIR=$RPM_BUILD_ROOT install
 
 %post
 
 %preun
 
-
-
 %clean
-rm -rf $RPM_BUILD_ROOT/*
-rm -rf $RPM_BUILD_DIR/%{name}-%{PACKAGE_VERSION}/*
-
-
-
+make clean
 
 %files
-%{prefix}/bin/splint
-%{prefix}/share/splint/imports/*
-%{prefix}/share/splint/lib/*
-%{prefix}/share/doc/%{name}-%{PACKAGE_VERSION}/*
-
-
-
-
-
-
+%defattr(-,root,root,-)
+%doc README.md doc/manual.pdf splintrc.demo
+%license LICENSE
+%{_bindir}/splint
+%{_mandir}/man1/*.1*
+%dir %{_datadir}/splint
+%{_datadir}/splint/*
+
+%define __debug_install_post \
+    %{_rpmconfigdir}/find-debuginfo.sh %{?_find_debuginfo_opts} "%{_builddir}/%{?buildsubdir}"\
+%{nil}
+
+%changelog
+* Tue Spe 07 2021 Weilun Fong <wlf@zhishan-iot.tk> - 3.1.2-2
+- Refactor the whole .spec file, make it more readable and maintainable
+- Improve provides list and filelist
+
+* Mon May 20 2002 Heiko Abraham <abrahamh@web.de> - 3.1.2-1
+- Contribute splint.spec