build system: remove Kerberos-related code

As Kerberos is not used in the CPP-Rust Driver at all (it was used in
CPP Driver for custom authentication), this commit removes all
references to Kerberos from the build system.

Author: wprzytula

CMakeLists.txt

@@ -42,7 +42,6 @@ option(CASS_INSTALL_HEADER_IN_SUBDIR "Install header file under 'include/cassand
 option(CASS_INSTALL_PKG_CONFIG "Install pkg-config file(s)" ON)
 option(CASS_MULTICORE_COMPILATION "Enable multicore compilation" ON)
 option(CASS_USE_BOOST_ATOMIC "Use Boost atomics library" OFF)
-option(CASS_USE_KERBEROS "Use Kerberos" OFF)
 option(CASS_USE_LIBSSH2 "Use libssh2 for integration tests" OFF)
 option(CASS_USE_OPENSSL "Use OpenSSL" ON)
 option(CASS_USE_STATIC_LIBS "Link static libraries when building executables" OFF)
@@ -64,7 +63,6 @@ endif()
 
 if(CASS_BUILD_INTEGRATION_TESTS OR CASS_BUILD_UNIT_TESTS)
   set(CASS_USE_OPENSSL ON) # Required for tests
-  set(CASS_USE_KERBEROS ON) # Required for tests
   set(CASS_USE_LIBUV ON)
 endif()
 

cmake/Dependencies.cmake

@@ -107,17 +107,6 @@ if(CASS_USE_OPENSSL)
   set(CASS_LIBS ${CASS_LIBS} ${OPENSSL_LIBRARIES})
 endif()
 
-#------------------------
-# Kerberos
-#------------------------
-
-if(CASS_USE_KERBEROS)
-  # Discover Kerberos and assign Kerberos include and libraries
-  find_package(Kerberos REQUIRED)
-  set(CASS_INCLUDES ${CASS_INCLUDES} ${KERBEROS_INCLUDE_DIR})
-  set(CASS_LIBS ${CASS_LIBS} ${KERBEROS_LIBRARIES})
-endif()
-
 #------------------------
 # Boost
 #------------------------

cmake/FindKerberos.cmake

@@ -1,7 +1,6 @@
 #ifndef DATASTAX_INTERNAL_DRIVER_CONFIG_HPP
 #define DATASTAX_INTERNAL_DRIVER_CONFIG_HPP
 
-#cmakedefine HAVE_KERBEROS
 #cmakedefine HAVE_OPENSSL
 #cmakedefine HAVE_STD_ATOMIC
 #cmakedefine CASS_CPP_STANDARD @CASS_CPP_STANDARD@

driver_config.hpp.in

@@ -17,11 +17,6 @@ else()
   list(APPEND SOURCES ssl/ssl_no_impl.cpp)
 endif()
 
-if(CASS_USE_KERBEROS)
-  list(APPEND INCLUDE_DIRS gssapi)
-  list(APPEND SOURCES gssapi/dse_auth_gssapi.cpp gssapi/dse_auth_gssapi.hpp)
-endif()
-
 # Determine atomic library to include
 if(CASS_USE_BOOST_ATOMIC)
   list(APPEND SOURCES atomic/atomic_boost.hpp)
@@ -122,7 +117,6 @@ endif()
 
 set(HAVE_BOOST_ATOMIC ${CASS_USE_BOOST_ATOMIC})
 set(HAVE_STD_ATOMIC ${CASS_USE_STD_ATOMIC})
-set(HAVE_KERBEROS ${CASS_USE_KERBEROS})
 set(HAVE_OPENSSL ${CASS_USE_OPENSSL})
 
 # Generate the driver_config.hpp file

src/CMakeLists.txt

@@ -1,7 +1,6 @@
 #ifndef DATASTAX_INTERNAL_DRIVER_CONFIG_HPP
 #define DATASTAX_INTERNAL_DRIVER_CONFIG_HPP
 
-#define HAVE_KERBEROS
 #define HAVE_OPENSSL
 #define HAVE_STD_ATOMIC
 #define CASS_CPP_STANDARD 11