diff --git a/README.md b/README.md
index b87362d..a8e09c9 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,7 @@
 # libmcal
 
+mcal stands for Modular Calendar Access Library.
+libmcal is a C library for accessing calendars, written to be very modular, with pluggable drivers.
+One of the main drivers it handles is ICAP, an internet protocol that has very close ties with the IMAP protocol.
+Using ICAP, you can access a calendar in very much the same way as you use IMAP to access a remote mailbox.
+
diff --git a/libmcal-0.7-flex-2.5.37.patch b/libmcal-0.7-flex-2.5.37.patch
new file mode 100644
index 0000000..8c2e386
--- /dev/null
+++ b/libmcal-0.7-flex-2.5.37.patch
@@ -0,0 +1,14 @@
+--- libmcal.orig/icalroutines.h	2003-01-28 18:45:21.000000000 +0100
++++ libmcal/icalroutines.h	2013-02-04 01:54:27.833995640 +0100
+@@ -48,8 +48,10 @@
+ 
+ 
+ /* ICAL parser. */
++#ifndef ical_yytext
+ extern char	*ical_yytext;
+-extern int	ical_yyleng;
++extern size_t	ical_yyleng;
++#endif
+ int		ical_yylex(void);
+ void		ical_usebuf(const char *buf, size_t size);
+ void		ical_preprocess(char *buf, size_t *size);
diff --git a/libmcal-0.7-flexfix.patch b/libmcal-0.7-flexfix.patch
new file mode 100644
index 0000000..0088dce
--- /dev/null
+++ b/libmcal-0.7-flexfix.patch
@@ -0,0 +1,29 @@
+--- libmcal/icalscanner.lex	2003-01-28 09:45:21.000000000 -0800
++++ libmcal/icalscanner.lex.new	2006-04-01 22:47:58.515410944 -0800
+@@ -32,13 +32,6 @@
+  */
+ 
+ #include "icalroutines.h"
+-
+-void
+-ical_usebuf(const char *buf, size_t size)
+-{
+-	BEGIN(INITIAL);
+-	yy_scan_bytes(buf, size);
+-}
+ %}
+ 
+ 
+@@ -68,3 +61,12 @@
+ {LF}				BEGIN(INITIAL); return ICALTOK_LF;
+ .				return ICALTOK_JUNK;
+ <<EOF>>				return ICALTOK_EOF;
++
++%%
++
++void
++ical_usebuf(const char *buf, size_t size)
++{
++	BEGIN(INITIAL);
++	yy_scan_bytes(buf, size);
++}
diff --git a/libmcal.spec b/libmcal.spec
new file mode 100644
index 0000000..ed08ba7
--- /dev/null
+++ b/libmcal.spec
@@ -0,0 +1,76 @@
+Name:          libmcal
+Version:       0.7
+Release:       2mamba
+Summary:       A C library for accessing calendars
+Group:         System/Libraries
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://mcal.check.com
+Source:        http://downloads.sourceforge.net/sourceforge/libmcal/libmcal-%{version}.tar.gz
+Patch0:        libmcal-%{version}-flexfix.patch
+Patch1:        libmcal-0.7-flex-2.5.37.patch
+## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
+## AUTOBUILDREQ-END
+License:       GPL
+BuildRoot:     %{_tmppath}/%{name}-%{version}-root
+
+%description
+mcal stands for Modular Calendar Access Library.
+libmcal is a C library for accessing calendars, written to be very modular, with pluggable drivers.
+One of the main drivers it handles is ICAP, an internet protocol that has very close ties with the IMAP protocol.
+Using ICAP, you can access a calendar in very much the same way as you use IMAP to access a remote mailbox.
+
+%package devel
+Summary:       A C library for accessing calendars
+Group:         Development/Libraries
+
+%description devel
+mcal stands for Modular Calendar Access Library.
+libmcal is a C library for accessing calendars, written to be very modular, with pluggable drivers.
+One of the main drivers it handles is ICAP, an internet protocol that has very close ties with the IMAP protocol.
+Using ICAP, you can access a calendar in very much the same way as you use IMAP to access a remote mailbox.
+This package contains the mcal headers and static library.
+
+%prep
+%setup -q -n libmcal
+%patch0 -p1
+%patch1 -p1
+
+%build
+%configure
+
+%ifarch x86_64
+export OTHER_CFLAGS="-fPIC"
+%endif
+%make
+
+%install
+sed -i "s|/usr/local/mcal|%{buildroot}%{_libdir}/mcal|" Makefile
+sed -i "s|/lib/|/%{_lib}/|" Makefile
+mkdir -p %{buildroot}%{_libdir}/mcal/
+mkdir -p %{buildroot}%{_libdir}/mcal/include/
+#mkdir -p %{buildroot}/usr/lib/mcal/{lib,include}
+#usr/{lib,include}
+%makeinstall
+cp {cal_misc.h,icalroutines.h} %{buildroot}%{_libdir}/mcal/include
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files devel
+%defattr(-,root,root)
+%{_libdir}/mcal/include/*.h
+%{_libdir}/mcal/*.a
+%{_libdir}/mcal/*.so
+
+%changelog
+* Mon Feb 04 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 0.7-2mamba
+- added patch against flex 2.5.37
+
+* Tue Jul 03 2007 Tiziana Ferro <tiziana.ferro@email.it> 0.7-1mamba
+- update to 0.7
+
+* Wed Sep 10 2003 Silvan Calarco <silvan.calarco@mambasoft.it> 0.6-1qilnx
+- first build