Added complete checks of GnuTLS.



git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4331 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 111159e..64360aa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -124,6 +124,18 @@
   include_directories(${GNUTLS_INCLUDE_DIR})
   add_definitions("-DHAVE_GNUTLS")
   add_definitions(${GNUTLS_DEFINITIONS})
+  
+  # Detect old version of GnuTLS
+  set(CMAKE_EXTRA_INCLUDE_FILES gnutls/gnutls.h)
+  set(CMAKE_REQUIRED_LIBRARIES gnutls)
+  check_function_exists(gnutls_transport_set_global_errno HAVE_OLD_GNUTLS)
+  check_function_exists(gnutls_x509_crt_print HAVE_GNUTLS_X509_CRT_PRINT)
+  check_type_size(gnutls_x509_crt_t GNUTLS_CRT_T)
+  check_type_size(gnutls_datum_t GNUTLS_DATUM_T)
+  check_type_size(gnutls_pk_algorithm_t GNUTLS_PK_ALGORITHM_T)
+  check_type_size(gnutls_sign_algorithm_t GNUTLS_SIGN_ALGORITHM_T)
+  set(CMAKE_EXTRA_INCLUDE_FILES) 
+  set(CMAKE_REQUIRED_LIBRARIES)
 endif()
 
 # Check for socket functions