configuration_options

Configuration settings

Connector/C specifies its build process with platform-independent CMake listfiles included in each directory of a source tree with the name CMakeLists.txt. Configuration settings may be specified by passing the -D option to CMake command line interpreter.

Do not build Connector/C from root of the source tree: Either create a subdirectory "build" inside the source tree or create a subdirectory outside of the source tree.

Example: cmake ../connector_c -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local

Reconfiguration

In case Connector/C was already configured, the CMakeCache.txt file needs to be removed first. In several cases, e.g. when cross compiling CMakeFiles subfolders need to be removed too.

Generator options

If you want to use a different generator, e.g. for nmake on Windows, you need to specify the generator with the -G option. cmake --help lists the available generators for the used platform.

CMake-related configuration settings

Option	Description
CMAKE_BUILD_TYPE	Build type: Release, RelWithDebInfo or Debug
CMAKE_INSTALL_PREFIX	Installation base directory
CMAKE_C_FLAGS	Flags for C-Compiler

TLS/SSL options

Option	Default	Description
WITH_OPENSSL	ON	Possible values are ON or OFF. Not supported anymore since Connector/C 3.0
WITH_SSL	SCHANNEL (windows), otherwise OPENSSL	Specifies type of TLS/SSL library. E.g. GNUTLS, OPENSSL or SCHANNEL (Windows only). OFF disables TLS/SSL functionality

Client plugins

Client plugins can be configured as dynamic plugins (DYNAMIC) or built-in plugins (STATIC) by specifying the plugin name followed by suffix _PLUGIN_TYPE as key, and DYNAMIC or STATIC as value.

E.g. for building dialog plugin as a built-in plugin, for versions < Connector/C 3.0.4

cmake .. -D{PLUGIN_NAME}_PLUGIN_TYPE=[STATIC|DYNAMIC|OFF]

Beginning with C/C 3.0.4

cmake .. -DCLIENT_PLUGIN_{PLUGIN_NAME}=[STATIC|DYNAMIC|OFF]

Connector/C 3.0 supports the following plugins:

Plugin	Type	Default	Description
SOCKET	IO	static	plugin for client server communication via socket
SHMEM	IO	static	plugin for client server communication via shared memory
NPIPE	IO	static	plugin for client server communication via named pipe
DIALOG	Authentication	dynamic	Authentication for user input, e.g. for PAM authentication
OLDPASSWORD	Authentication	static	Pre. 4.1 authentication (deprecated)
NATIVE	Authentication	static	Default authentication
CLEARTEXT	Authentication	dynamic	Sends password without hashing or encryption
AUTH_GSSAPI	Authentication	dynamic	Kerberos/GSSAPI authentication plugin
SHA256_PASSWORD	Authentication	dynamic	SHA256 password authentication plugin
AURORA	Connection	OFF	Fail over plugin for Aurora (experimental)
REPLICATION	Connection	OFF	Replication/fail over plugin (experimental)