diff --git a/INSTALL.md b/INSTALL.md
index cb34dfd03..79e3a7aa8 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -153,8 +153,6 @@ In addition to `CMAKE_INSTALL_PREFIX` here are most of the supported Icinga-spec
   Defaults to `OFF`.
 
 **Features:**
-- `ICINGA2_WITH_MYSQL`: Determines whether the MySQL IDO module is built; defaults to `ON`
-- `ICINGA2_WITH_PGSQL`: Determines whether the PostgreSQL IDO module is built; defaults to `ON`
 - `ICINGA2_WITH_CHECKER`: Determines whether the checker module is built; defaults to `ON`
 - `ICINGA2_WITH_COMPAT`: Determines whether the compat module is built; defaults to `ON`
 - `ICINGA2_WITH_DEMO`: Determines whether the demo module is built; defaults to `OFF`
@@ -165,6 +163,27 @@ In addition to `CMAKE_INSTALL_PREFIX` here are most of the supported Icinga-spec
 - `ICINGA2_WITH_STUDIO`: Determines whether the Icinga Studio application is built; defaults to `OFF`
 - `ICINGA2_WITH_TESTS`: Determines whether the unit tests are built; defaults to `ON`
 
+**MySQL or MariaDB:**
+
+The following settings can be tuned for the MySQL / MariaDB IDO feature.
+
+- `ICINGA2_WITH_MYSQL`: Determines whether the MySQL IDO module is built; defaults to `ON`
+- `MYSQL_CLIENT_LIBS`: Client implementation used (mysqlclient / mariadbclient); defaults searches for `mysqlclient` and `mariadbclient`
+- `MYSQL_INCLUDE_DIR`: Directory containing include files for the mysqlclient; default empty -
+  checking multiple paths like `/usr/include/mysql`
+
+See [FindMySQL.cmake](third-party/cmake/FindMySQL.cmake) for the implementation.
+
+**PostgreSQL:**
+
+The following settings can be tuned for the PostgreSQL IDO feature.
+
+- `ICINGA2_WITH_PGSQL`: Determines whether the PostgreSQL IDO module is built; defaults to `ON`
+- `PostgreSQL_INCLUDE_DIR`: Top-level directory containing the PostgreSQL include directories
+- `PostgreSQL_LIBRARY_DIR`: Top-level directory containing the PostgreSQL libraries
+
+See [FindMySQL.cmake](third-party/cmake/FindPostgreSQL.cmake) for the implementation.
+
 **Version detection:**
 
 CMake determines the Icinga 2 version number using `git describe` if the
diff --git a/third-party/cmake/FindMySQL.cmake b/third-party/cmake/FindMySQL.cmake
index 60c23afd5..77465d027 100644
--- a/third-party/cmake/FindMySQL.cmake
+++ b/third-party/cmake/FindMySQL.cmake
@@ -74,11 +74,13 @@ IF (WIN32)
     $ENV{ProgramFiles}/MySQL/*/lib/${libsuffixDist}
     $ENV{SystemDrive}/MySQL/*/lib/${libsuffixDist})
 ELSE (WIN32)
-  SET(MYSQL_CLIENT_LIBS mysqlclient)
+  IF (NOT MYSQL_CLIENT_LIBS)
+    SET(MYSQL_CLIENT_LIBS mysqlclient mariadbclient)
+  ENDIF (NOT MYSQL_CLIENT_LIBS)
 
   FILE(GLOB _macports_lib_dirs /opt/local/lib/mysql*/mysql)
 
-  FIND_LIBRARY(MYSQL_LIB NAMES mysqlclient
+  FIND_LIBRARY(MYSQL_LIB NAMES ${MYSQL_CLIENT_LIBS}
     PATHS
     $ENV{MYSQL_DIR}/libmysql_r/.libs
     $ENV{MYSQL_DIR}/lib