diff --git a/.bison.metadata b/.bison.metadata
new file mode 100644
index 0000000..5cddff2
--- /dev/null
+++ b/.bison.metadata
@@ -0,0 +1 @@
+245467c56663ec80fc3e80c38cc1ff18c59d7ecc SOURCES/bison-2.7.tar.xz
diff --git a/README.md b/README.md
deleted file mode 100644
index 0e7897f..0000000
--- a/README.md
+++ /dev/null
@@ -1,5 +0,0 @@
-The master branch has no content
-
-Look at the c7 branch if you are working with CentOS-7, or the c4/c5/c6 branch for CentOS-4, 5 or 6
-
-If you find this file in a distro specific branch, it means that no content has been checked in yet
diff --git a/SOURCES/bison-2.7-unused-opts.patch b/SOURCES/bison-2.7-unused-opts.patch
new file mode 100644
index 0000000..2a2505a
--- /dev/null
+++ b/SOURCES/bison-2.7-unused-opts.patch
@@ -0,0 +1,53 @@
+diff -up bison-2.7/src/getargs.c\~ bison-2.7/src/getargs.c
+--- bison-2.7/src/getargs.c~ 2012-12-05 14:51:18.000000000 +0100
++++ bison-2.7/src/getargs.c 2013-05-17 17:45:53.188616509 +0200
+@@ -80,7 +80,6 @@ int skeleton_prio = default_prio;
+ const char *skeleton = NULL;
+ int language_prio = default_prio;
+ struct bison_language const *language = &valid_languages[0];
+-const char *include = NULL;
+
+
+ /** Decode an option's set of keys.
+@@ -500,12 +499,10 @@ static char const short_options[] =
+ "b:"
+ "d"
+ "f::"
+- "e"
+ "g::"
+ "h"
+ "k"
+ "l"
+- "n"
+ "o:"
+ "p:"
+ "r:"
+@@ -535,7 +532,6 @@ static struct option const long_options[
+
+ /* Parser. */
+ { "name-prefix", required_argument, 0, 'p' },
+- { "include", required_argument, 0, 'I' },
+
+ /* Output. */
+ { "file-prefix", required_argument, 0, 'b' },
+@@ -564,7 +560,6 @@ static struct option const long_options[
+ { "force-define", required_argument, 0, 'F' },
+ { "locations", no_argument, 0, LOCATIONS_OPTION },
+ { "no-lines", no_argument, 0, 'l' },
+- { "raw", no_argument, 0, 0 },
+ { "skeleton", required_argument, 0, 'S' },
+ { "language", required_argument, 0, 'L' },
+ { "token-table", no_argument, 0, 'k' },
+@@ -623,10 +618,6 @@ getargs (int argc, char *argv[])
+ }
+ break;
+
+- case 'I':
+- include = AS_FILE_NAME (optarg);
+- break;
+-
+ case 'L':
+ language_argmatch (optarg, command_line_prio,
+ command_line_location ());
+
+Diff finished. Fri May 17 17:45:58 2013
diff --git a/SPECS/bison.spec b/SPECS/bison.spec
new file mode 100644
index 0000000..f57b583
--- /dev/null
+++ b/SPECS/bison.spec
@@ -0,0 +1,403 @@
+Summary: A GNU general-purpose parser generator
+Name: bison
+Version: 2.7
+Release: 2%{?dist}
+License: GPLv3+
+Group: Development/Tools
+Source: ftp://ftp.gnu.org/pub/gnu/bison/bison-%{version}.tar.xz
+
+# https://bugzilla.redhat.com/show_bug.cgi?id=948856
+# Submitted for upstream inclusion on 2013-05-17.
+Patch0: bison-2.7-unused-opts.patch
+
+# testsuite dependency
+BuildRequires: autoconf
+
+URL: http://www.gnu.org/software/bison/
+BuildRoot: %{_tmppath}/%{name}-root
+BuildRequires: m4 >= 1.4
+#java-1.7.0-openjdk-devel
+Requires: m4 >= 1.4
+Requires(post): /sbin/install-info
+Requires(preun): /sbin/install-info
+
+# bison contains a copy of gnulib. As a copylib, gnulib was granted
+# an exception that allows bundling it with other software. For
+# details, see:
+# https://fedoraproject.org/wiki/Packaging:No_Bundled_Libraries#Exceptions
+Provides: bundled(gnulib)
+
+%description
+Bison is a general purpose parser generator that converts a grammar
+description for an LALR(1) context-free grammar into a C program to
+parse that grammar. Bison can be used to develop a wide range of
+language parsers, from ones used in simple desk calculators to complex
+programming languages. Bison is upwardly compatible with Yacc, so any
+correctly written Yacc grammar should work with Bison without any
+changes. If you know Yacc, you shouldn't have any trouble using
+Bison. You do need to be very proficient in C programming to be able
+to use Bison. Bison is only needed on systems that are used for
+development.
+
+If your system will be used for C development, you should install
+Bison.
+
+%package devel
+Summary: -ly library for development using Bison-generated parsers
+Group: Development/Libraries
+Provides: bison-static = %{version}-%{release}
+
+%description devel
+The bison-devel package contains the -ly library sometimes used by
+programs using Bison-generated parsers. If you are developing programs
+using Bison, you might want to link with this library. This library
+is not required by all Bison-generated parsers, but may be employed by
+simple programs to supply minimal support for the generated parsers.
+
+# -ly is kept static. It only contains two symbols: main and yyerror,
+# and both of these are extremely simple (couple lines of C total).
+# It doesn't really pay off to introduce a shared library for that.
+#
+# Therefore -devel subpackage could have been created as -static, but
+# the split was done in Jan 2005, which predates current guidelines.
+# Besides there is logic to that: the library is devel in the sense
+# that the generated parser could be distributed together with other
+# sources, and only bison-devel would be necessary to wrap the build.
+
+%package runtime
+Summary: Runtime support files used by Bison-generated parsers
+Group: Development/Libraries
+
+%description runtime
+The bison-runtime package contains files used at runtime by parsers
+that Bison generates. Packages whose binaries contain parsers
+generated by Bison should depend on bison-runtime to ensure that
+these files are available. See the Internationalization in the
+Bison manual section for more information.
+
+%prep
+%setup -q
+%patch0 -p1
+
+%build
+%configure
+make
+
+%check
+make check
+#make maintainer-check
+
+%install
+rm -rf $RPM_BUILD_ROOT
+%makeinstall
+
+# Remove unpackaged files.
+rm -f $RPM_BUILD_ROOT/%{_bindir}/yacc
+rm -f $RPM_BUILD_ROOT/%{_infodir}/dir
+rm -f $RPM_BUILD_ROOT/%{_mandir}/man1/yacc*
+
+%find_lang %{name}
+%find_lang %{name}-runtime
+
+gzip -9nf ${RPM_BUILD_ROOT}%{_infodir}/bison.info*
+
+%post
+if [ -f %{_infodir}/bison.info.gz ]; then # for --excludedocs
+ /sbin/install-info %{_infodir}/bison.info.gz %{_infodir}/dir --entry="* bison: (bison). The GNU parser generator." || :
+fi
+
+%preun
+if [ $1 = 0 ]; then
+ if [ -f %{_infodir}/bison.info.gz ]; then # for --excludedocs
+ /sbin/install-info --delete %{_infodir}/bison.info.gz %{_infodir}/dir --entry="* bison: (bison). The GNU parser generator." || :
+ fi
+fi
+
+# The distribution contains also source files. These are used by m4
+# when the target parser file is generated.
+%files -f %{name}.lang
+%defattr(-,root,root)
+%doc AUTHORS ChangeLog NEWS README THANKS TODO COPYING
+%{_mandir}/*/bison*
+%{_datadir}/bison
+%{_infodir}/bison.info*
+%{_bindir}/bison
+%{_datadir}/aclocal/bison*.m4
+
+%files -f %{name}-runtime.lang runtime
+%doc COPYING
+
+%files devel
+%doc COPYING
+%defattr(-,root,root)
+%{_libdir}/liby.a
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%changelog
+* Fri May 17 2013 Petr Machata <pmachata@redhat.com> - 2.7-2
+- Drop unused options --raw, -n, -e, --include and -I
+
+* Thu Mar 21 2013 Petr Machata <pmachata@redhat.com> - 2.7-1
+- Rebase to 2.7
+
+* Wed Feb 13 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.6.4-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild
+
+* Fri Nov 2 2012 Orion Poplawski <orion@cora.nwra.com> - 2.6.4-1
+- Update to 2.6.4
+
+* Tue Jul 31 2012 Petr Machata <pmachata@redhat.com> - 2.6.1-1
+- Rebase to 2.6.1
+ - Drop bison-2.4.2-drop-test-67.patch
+- Resolves: #829028
+
+* Wed Jul 18 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.5-5
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild
+
+* Tue May 15 2012 Petr Machata <pmachata@redhat.com> - 2.5-4
+- Add a virtual provides for bundled(gnulib).
+- Resolves: #821746
+
+* Tue Apr 17 2012 Bill Nottingham <notting@redhat.com> - 2.5-2
+- swap java-openjdk-1.6.0 for 1.7.0 in buildrequirements
+
+* Thu Jan 12 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.5-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild
+
+* Wed Jun 22 2011 Petr Machata <pmachata@redhat.com> - 2.5-1
+- Upstream 2.5
+
+* Mon Feb 07 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.4.3-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild
+
+* Wed Aug 11 2010 Petr Machata <pmachata@redhat.com> - 2.4.3-1
+- Rebase to 2.4.3
+- Resolves: #621854
+
+* Thu Jul 1 2010 Petr Machata <pmachata@redhat.com> - 2.4.2-3
+- Devel subpackage now provides boost-static, as per Fedora
+ guidelines.
+- Resolves: #609599
+
+* Thu Apr 8 2010 Petr Machata <pmachata@redhat.com> - 2.4.2-2
+- Disable the mysteriously failing test no. 67. Details in associated
+ bugreport. (bison-2.4.2-drop-test-67.patch)
+- Resolves: #576513
+
+* Wed Apr 7 2010 Petr Machata <pmachata@redhat.com> - 2.4.2-1
+- Rebase to 2.4.2
+- Drop reap_subpipe patch, upstream has a fix
+- Resolves: #576513
+
+* Fri Mar 5 2010 Petr Machata <pmachata@redhat.com> - 2.4.1-5
+- Fix the license tag
+- Install COPYING
+
+* Mon Aug 24 2009 Petr Machata <pmachata@redhat.com> - 2.4.1-4
+- Fix installation with --excludedocs
+- Resolves: #515939
+
+* Fri Jul 24 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.4.1-3
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild
+
+* Mon Feb 23 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.4.1-2
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_11_Mass_Rebuild
+
+* Sun Dec 28 2008 Petr Machata <pmachata@redhat.com> - 2.4.1-1
+- Rebase to 2.4.1
+- Resolves: #478348
+
+* Wed Nov 12 2008 Petr Machata <pmachata@redhat.com> - 2.4-2
+- Rebase to 2.4
+- Resolves: #471183
+
+* Mon Sep 15 2008 Petr Machata <pmachata@redhat.com> - 2.3-6
+- Merge review:
+ - Drop terminating dot from Summary
+ - Escape macros inadvertently left in changelog
+ - Explain why are there source files in the main package
+
+* Tue Feb 19 2008 Fedora Release Engineering <rel-eng@fedoraproject.org> - 2.3-5
+- Autorebuild for GCC 4.3
+
+* Tue Aug 28 2007 Roland McGrath <roland@redhat.com> - 2.3-4
+- Canonicalize License tag.
+
+* Sun Jan 21 2007 Roland McGrath <roland@redhat.com> - 2.3-3
+- Canonicalize post/preun use of install-info.
+- Resolves: 223679
+
+* Wed Jul 12 2006 Jesse Keating <jkeating@redhat.com> - 2.3-2.1
+- rebuild
+
+* Wed Jun 7 2006 Roland McGrath <roland@redhat.com> - 2.3-2
+- Add BuildRequires on m4.
+
+* Wed Jun 7 2006 Roland McGrath <roland@redhat.com> - 2.3-1
+- New upstream version 2.3
+
+* Mon May 22 2006 Roland McGrath <roland@redhat.com> - 2.2-1
+- New upstream version 2.2
+
+* Mon May 1 2006 Roland McGrath <roland@redhat.com> - 2.1-3
+- Fix K&R parser definition when it has no arguments (#190376).
+
+* Fri Feb 10 2006 Jesse Keating <jkeating@redhat.com> - 2.1-1.2.1
+- bump again for double-long bug on ppc(64)
+
+* Tue Feb 07 2006 Jesse Keating <jkeating@redhat.com> - 2.1-1.2
+- rebuilt for new gcc4.1 snapshot and glibc changes
+
+* Fri Dec 09 2005 Jesse Keating <jkeating@redhat.com>
+- rebuilt
+
+* Fri Oct 14 2005 Roland McGrath <roland@redhat.com> - 2.1-1
+- New upstream version 2.1
+- New subpackage bison-runtime for i18n support files used by parsers.
+
+* Thu Apr 7 2005 Roland McGrath <roland@redhat.com> - 2.0-6
+- run test suite in %%check
+
+* Mon Mar 14 2005 Roland McGrath <roland@redhat.com> - 2.0-5
+- rebuilt
+
+* Thu Jan 6 2005 Roland McGrath <roland@redhat.com> - 2.0-4
+- update upstream URLs, add doc files (#144346)
+
+* Thu Jan 6 2005 Roland McGrath <roland@redhat.com> - 2.0-3
+- missing %%defattr for subpackage
+
+* Thu Jan 6 2005 Roland McGrath <roland@redhat.com> - 2.0-2
+- split liby.a into bison-devel package
+
+* Tue Jan 4 2005 Roland McGrath <roland@redhat.com> - 2.0-1
+- new upstream version
+
+* Tue Jun 15 2004 Elliot Lee <sopwith@redhat.com>
+- rebuilt
+
+* Fri Jun 4 2004 Roland McGrath <roland@redhat.com> 1.875c-1
+- new upstream version (fixes bug #116823)
+
+* Tue Mar 02 2004 Elliot Lee <sopwith@redhat.com>
+- rebuilt
+
+* Fri Feb 13 2004 Elliot Lee <sopwith@redhat.com>
+- rebuilt
+
+* Thu Oct 30 2003 Roland McGrath <roland@redhat.com> 1.875-6
+- add dependency on m4 (bug #108655)
+
+* Wed Sep 24 2003 Roland McGrath <roland@redhat.com> 1.875-5
+- remove problematic __attribute__ use for label (bug #105034)
+
+* Fri Aug 1 2003 Havoc Pennington <hp@redhat.com> 1.875-3
+- put #ifndef __cplusplus around attribute(unused) on goto label in yacc.c
+
+* Wed Jun 04 2003 Elliot Lee <sopwith@redhat.com>
+- rebuilt
+
+* Sat Mar 22 2003 Roland McGrath <roland@redhat.com> 1.875-2
+- update specs for new files installed by new version
+
+* Wed Mar 19 2003 Roland McGrath <roland@redhat.com> 1.875-1
+- new upstream version 1.875 (bug #83184)
+
+* Wed Jan 22 2003 Tim Powers <timp@redhat.com>
+- rebuilt
+
+* Wed Nov 27 2002 Than Ngo <than@redhat.com> 1.35-5
+- rebuild in new build enviroment
+- remove unneeded file
+
+* Fri Jun 21 2002 Tim Powers <timp@redhat.com>
+- automated rebuild
+
+* Tue Jun 18 2002 Than Ngo <than@redhat.com> 1.35-3
+- don't forcibly strip binaries
+
+* Thu May 23 2002 Tim Powers <timp@redhat.com>
+- automated rebuild
+
+* Wed Mar 27 2002 Than Ngo <than@redhat.com> 1.35-1
+- 1.35 fix incompatible with C++ compilers (bug #62121)
+
+* Sun Mar 17 2002 Florian La Roche <Florian.LaRoche@redhat.de>
+- update to 1.34
+
+* Sat Feb 09 2002 Florian La Roche <Florian.LaRoche@redhat.de>
+- update to 1.33
+
+* Sat Jan 26 2002 Florian La Roche <Florian.LaRoche@redhat.de>
+- update to 1.32
+
+* Tue Jan 15 2002 Florian La Roche <Florian.LaRoche@redhat.de>
+- update to 1.31
+
+* Wed Jan 09 2002 Tim Powers <timp@redhat.com>
+- automated rebuild
+
+* Mon Nov 27 2001 Than Ngo <than@redhat.com> 1.30-4
+- add missing Url
+
+* Sun Nov 25 2001 Than Ngo <than@redhat.com> 1.30-3
+- fixed coredumps on some input bug #56607i, thanks to Enrico for locating this bug
+
+* Tue Nov 06 2001 Than Ngo <than@redhat.com> 1.30-2
+- FHS packaging
+- use find_lang
+
+* Sun Nov 04 2001 Florian La Roche <Florian.LaRoche@redhat.de>
+- update to 1.30
+
+* Mon Oct 15 2001 Than Ngo <than@redhat.de> 1.29-1
+- update to 1.29
+- update Url (bug #54597)
+
+* Sun Jun 24 2001 Elliot Lee <sopwith@redhat.com>
+- Bump release + rebuild.
+
+* Wed Jul 12 2000 Prospector <bugzilla@redhat.com>
+- automatic rebuild
+
+* Sun Jun 18 2000 Than Ngo <than@redhat.de>
+- rebuilt in the new build environment
+- FHS packaging
+
+* Sat May 27 2000 Ngo Than <than@redhat.de>
+- rebuild for 7.0
+- put man pages and info files to correct place
+
+* Thu Feb 03 2000 Preston Brown <pbrown@redhat.com>
+- rebuild to gzip man page.
+
+* Fri Jul 16 1999 Jeff Johnson <jbj@redhat.com>
+- update to 1.28.
+
+* Sun Mar 21 1999 Cristian Gafton <gafton@redhat.com>
+- auto rebuild in the new build environment (release 3)
+
+* Mon Mar 8 1999 Jeff Johnson <jbj@redhat.com>
+- configure with datadir=/usr/lib (#1386).
+
+* Mon Feb 22 1999 Jeff Johnson <jbj@redhat.com>
+- updated text in spec file.
+- update to 1.27
+
+* Thu Dec 17 1998 Cristian Gafton <gafton@redhat.com>
+- build for glibc 2.1
+
+* Fri Apr 24 1998 Prospector System <bugs@redhat.com>
+- translations modified for de, fr, tr
+
+* Wed Apr 08 1998 Cristian Gafton <gafton@redhat.com>
+- built for Manhattan
+- added build root
+
+* Wed Oct 15 1997 Donnie Barnes <djb@redhat.com>
+- various spec file cleanups
+
+* Mon Jun 02 1997 Erik Troan <ewt@redhat.com>
+- built against glibc