- Adapted CMake files for the PKCS#11 support

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed01dae..1c6a583 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,8 @@
 set(CMAKE_SHARED_LINKER_FLAGS "-fprofile-arcs -ftest-coverage")
 endif(CMAKE_BUILD_TYPE STREQUAL "Coverage")
 
+option(USE_PKCS11_HELPER_LIBRARY "Build PolarSSL with the pkcs11-helper library." OFF)
+
 include_directories(include/)
 
 add_subdirectory(library)