diff --git a/libcryptopp.spec b/libcryptopp.spec
index 7d73572..9b2a336 100644
--- a/libcryptopp.spec
+++ b/libcryptopp.spec
@@ -1,7 +1,7 @@
 %define        realversion %(echo %version | tr -d .)
 Name:          libcryptopp
 Version:       5.6.2
-Release:       3mamba
+Release:       4mamba
 Summary:       Free C++ class library of cryptographic schemes
 Group:         System/Libraries
 Vendor:        openmamba
@@ -75,6 +75,23 @@ find . -type f -exec dos2unix {} \;
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 %makeinstall LIBDIR=%{_lib}
 
+install -d -m0755 %{buildroot}%{_libdir}/pkgconfig
+cat > %{buildroot}%{_libdir}/pkgconfig/cryptopp.pc << _EOF
+prefix=%{_prefix}
+exec_prefix=%{_libexecdir}
+libdir=%{_libdir}
+
+Name: Crypto++
+Description: A free C++ class library of cryptographic schemes
+Version: 5.6.2
+URL: http://www.cryptopp.com
+Requires:
+Conflicts:
+Libs: -lcryptopp
+Libs.private:
+Cflags:
+_EOF
+
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
@@ -105,12 +122,16 @@ fi
 %{_libdir}/libcrypto++.a
 %{_libdir}/libcrypto++.la
 %{_libdir}/libcrypto++.so
+%{_libdir}/pkgconfig/cryptopp.pc
 
 #%files tools
 #%defattr(-,root,root,0755)
 #%{_bindir}/cryptest
 
 %changelog
+* Sat Apr 30 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 5.6.2-4mamba
+- add pkg-config file
+
 * Fri Jan 29 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 5.6.2-3mamba
 - rebuilt with gcc 5.3.0