diff --git a/.compat-libgfortran-41.metadata b/.compat-libgfortran-41.metadata
new file mode 100644
index 0000000..30a5d79
--- /dev/null
+++ b/.compat-libgfortran-41.metadata
@@ -0,0 +1 @@
+e8cebc1272553955afc79ee62d402b34d7107321 SOURCES/libgfortran-4.1.2-20071221.tar.bz2
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/libgfortran41-gthr.patch b/SOURCES/libgfortran41-gthr.patch
new file mode 100644
index 0000000..077db31
--- /dev/null
+++ b/SOURCES/libgfortran41-gthr.patch
@@ -0,0 +1,23 @@
+--- gcc/gthr-default.h.jj	2007-12-14 16:24:42.515800719 +0100
++++ gcc/gthr-default.h	2007-11-24 23:05:01.000000000 +0100
+@@ -0,0 +1 @@
++#include "gthr-posix.h"
+--- gcc/gthr-posix.h.jj	2007-07-04 20:46:26.000000000 +0200
++++ gcc/gthr-posix.h	2007-12-20 16:04:49.000000000 +0100
+@@ -62,9 +62,15 @@ typedef pthread_mutex_t __gthread_recurs
+ # ifndef __gthrw_pragma
+ #  define __gthrw_pragma(pragma)
+ # endif
+-# define __gthrw2(name,name2,type) \
++# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2)
++#  define __gthrw2(name,name2,type) \
++  static __typeof(type) name __attribute__ ((__weakref__(#name2))); \
++  __gthrw_pragma(weak type)
++# else
++#  define __gthrw2(name,name2,type) \
+   extern __typeof(type) name __attribute__ ((__weakref__(#name2))); \
+   __gthrw_pragma(weak type)
++# endif
+ # define __gthrw_(name) __gthrw_ ## name
+ #else
+ # define __gthrw2(name,name2,type)
diff --git a/SPECS/compat-libgfortran-41.spec b/SPECS/compat-libgfortran-41.spec
new file mode 100644
index 0000000..6f157ee
--- /dev/null
+++ b/SPECS/compat-libgfortran-41.spec
@@ -0,0 +1,73 @@
+%define DATE 20071221
+%define _unpackaged_files_terminate_build 0
+Summary: Compatibility Fortran 95 runtime library version 4.1.2
+Name: compat-libgfortran-41
+Version: 4.1.2
+Release: 42%{?dist}
+# libgfortran has an exception which allows
+# linking it into any kind of programs or shared libraries without
+# restrictions.
+License: GPLv2+ with exceptions
+Group: System Environment/Libraries
+Source0: libgfortran-%{version}-%{DATE}.tar.bz2
+URL: http://gcc.gnu.org
+BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
+BuildRequires: gcc-gfortran >= 4.1.2, gettext, bison, flex, texinfo
+Patch1: libgfortran41-gthr.patch
+
+%description
+This package includes a Fortran 95 runtime library for compatibility
+with GCC 4.1.x-RH compiled Fortran applications.
+
+%prep
+%setup -q -n libgfortran-%{version}-%{DATE}
+%patch1 -p0 -b .gthr~
+
+%build
+mkdir obj
+cd obj
+CFLAGS="$RPM_OPT_FLAGS" FCFLAGS="$RPM_OPT_FLAGS" ../libgfortran/configure --prefix=%{_prefix} --disable-multilib
+make %{?_smp_mflags}
+
+%install
+rm -rf $RPM_BUILD_ROOT
+cd obj
+mkdir -p $RPM_BUILD_ROOT%{_libdir}
+install -m 755 .libs/libgfortran.so.1.0.0 $RPM_BUILD_ROOT%{_libdir}/
+ln -sf libgfortran.so.1.0.0 $RPM_BUILD_ROOT%{_libdir}/libgfortran.so.1
+
+%clean
+rm -rf $RPM_BUILD_ROOT
+
+%post -p /sbin/ldconfig
+
+%postun -p /sbin/ldconfig
+
+%files
+%defattr(-,root,root)
+%{_libdir}/libgfortran.so.1*
+
+%changelog
+* Wed Aug 28 2013 Jakub Jelinek <jakub@redhat.com 4.1.2-42
+- add %%{?dist} to Release (#874994)
+
+* Wed Feb 13 2013 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-42
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_19_Mass_Rebuild
+
+* Wed Jul 18 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-41
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass_Rebuild
+
+* Thu Jan 12 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-40
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild
+
+* Tue Feb 08 2011 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-39
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_15_Mass_Rebuild
+
+* Fri Jul 24 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-38
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild
+
+* Tue Feb 24 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.1.2-37
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_11_Mass_Rebuild
+
+* Fri Dec 21 2007 Jakub Jelinek  <jakub@redhat.com> 4.1.2-36
+- new compat library