diff --git a/.gitignore b/.gitignore
index cec3e51..00b3242 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 wcslib-4.3.1.tar.gz
+/wcslib-4.5.6.tar.bz2
diff --git a/sources b/sources
index 817bc27..75985d7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-1ba90fbb6975472966f3aed17bbfbfd7  wcslib-4.3.1.tar.gz
+b50030caa59010f4a50c5947647e431b  wcslib-4.5.6.tar.bz2
diff --git a/wcslib-lm.patch b/wcslib-lm.patch
deleted file mode 100644
index 6db126e..0000000
--- a/wcslib-lm.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -ur wcslib-4.3.1/makedefs.in wcslib-4.3.1.new/makedefs.in
---- wcslib-4.3.1/makedefs.in	2007-12-27 06:57:22.000000000 +0100
-+++ wcslib-4.3.1.new/makedefs.in	2009-03-16 15:50:23.000000000 +0100
-@@ -107,7 +107,7 @@
- # Shared (dynamic) library (see note 3 above).
-   SHRLIB   := @SHRLIB@
-   SHRFLAGS := @SHRFLAGS@
--  SHRLD    := @SHRLD@
-+  SHRLD    := @SHRLD@ -lm
-   SHRLN    := @SHRLN@
- 
- # Installation utilities and locations.
diff --git a/wcslib.spec b/wcslib.spec
index cc344f8..ade40d0 100644
--- a/wcslib.spec
+++ b/wcslib.spec
@@ -1,15 +1,13 @@
 Name: wcslib
-Version: 4.3.1
-Release: 3%{?dist}
+Version: 4.5.6
+Release: 1%{?dist}
 Summary: An implementation of the FITS World Coordinate System standard
 
 Group: Development/Libraries
 # Library is under LGPLv3+ utils under GPLv3+
 License: LGPLv3+
 URL: http://www.atnf.csiro.au/people/mcalabre/WCS/
-Source0: ftp://ftp.atnf.csiro.au/pub/software/wcslib/%{name}-%{version}.tar.gz
-Patch0: wcslib-lm.patch
-Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
+Source0: ftp://ftp.atnf.csiro.au/pub/software/wcslib/%{name}-%{version}.tar.bz2
 BuildRequires: cfitsio-devel zlib-devel
 
 %description
@@ -25,7 +23,7 @@ Requires: wcslib = %{version}-%{release}
 These are the files needed to develop an application using %{name}.
 
 %package utils
-Summary: Utility progrmas provided by %{name}
+Summary: Utility programs provided by %{name}
 Group: Development/Libraries
 License: GPLv3+
 Requires: wcslib = %{version}-%{release}
@@ -34,7 +32,6 @@ Utils provided with %{name}
 
 %prep
 %setup -q 
-%patch0 -p1
 
 %build
 %configure
@@ -44,14 +41,16 @@ make %{?_smp_mflags}
 rm -rf %{buildroot}
 mkdir -p %{buildroot}/%{_bindir}
 mkdir -p %{buildroot}/%{_libdir}
+mkdir -p %{buildroot}/%{_libdir}/pkgconfig
 mkdir -p %{buildroot}/%{_includedir}/wcslib
 install -m 755 utils/fitshdr %{buildroot}/%{_bindir}
 install -m 755 utils/HPXcvt %{buildroot}/%{_bindir}
 install -m 644 wcsconfig.h %{buildroot}/%{_includedir}/wcslib
+install -m 644 wcslib.pc %{buildroot}/%{_libdir}/pkgconfig
 install -m 644 C/*.h %{buildroot}/%{_includedir}/wcslib
-install -m 755 C/libwcs.so.4.3 %{buildroot}/%{_libdir}
-ln -s libwcs.so.4.3 %{buildroot}/%{_libdir}/libwcs.so.4
-ln -s libwcs.so.4.3 %{buildroot}/%{_libdir}/libwcs.so
+install -m 755 C/libwcs.so.%{version} %{buildroot}/%{_libdir}
+ln -s libwcs.so.%{version} %{buildroot}/%{_libdir}/libwcs.so.4
+ln -s libwcs.so.%{version} %{buildroot}/%{_libdir}/libwcs.so
 
 %clean
 rm -rf %{buildroot}
@@ -68,6 +67,7 @@ rm -rf %{buildroot}
 %files devel
 %defattr(-,root,root,-)
 %{_libdir}/*.so
+%{_libdir}/pkgconfig/wcslib.pc
 %{_includedir}/wcslib
 
 %files utils
@@ -76,6 +76,10 @@ rm -rf %{buildroot}
 %{_bindir}/*
 
 %changelog
+* Tue Nov 09 2010 Sergio Pascual <sergiopr at fedoraproject.org> 4.5.6-1
+- New upstream source
+- Added pkgconfig file
+
 * Mon Jul 27 2009 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 4.3.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild