cleanup: CPACK_RPM_* package description

add cmake helper macro SET_IF_UNSET()
and use it for CPACK_* variables

cmake/cpack_rpm.cmake

@@ -45,17 +45,8 @@ SET(CPACK_RPM_PACKAGE_LICENSE "GPLv2")
 SET(CPACK_RPM_PACKAGE_RELOCATABLE FALSE)
 SET(CPACK_PACKAGE_RELOCATABLE FALSE)
 SET(CPACK_RPM_PACKAGE_GROUP "Applications/Databases")
-SET(CPACK_RPM_PACKAGE_SUMMARY ${CPACK_PACKAGE_SUMMARY})
 SET(CPACK_RPM_PACKAGE_URL ${CPACK_PACKAGE_URL})
-SET(CPACK_RPM_PACKAGE_DESCRIPTION "${CPACK_RPM_PACKAGE_SUMMARY}
-
-It is GPL v2 licensed, which means you can use the it free of charge under the
-conditions of the GNU General Public License Version 2 (http://www.gnu.org/licenses/).
-
-MariaDB documentation can be found at https://mariadb.com/kb
-MariaDB bug reports should be submitted through https://jira.mariadb.org 
-
-")
+SET(CPACK_RPM_PACKAGE_DESCRIPTION "${CPACK_PACKAGE_DESCRIPTION}")
 
 SET(CPACK_RPM_shared_PACKAGE_VENDOR "MariaDB Corporation Ab")
 SET(CPACK_RPM_shared_PACKAGE_LICENSE "LGPLv2.1")

cmake/misc.cmake

@@ -11,3 +11,9 @@ ELSE()
     SET(__msg1_${id} ${hash} CACHE INTERNAL "")
   ENDFUNCTION()
 ENDIF()
+
+MACRO(SET_IF_UNSET VAR VAL)
+  IF(NOT DEFINED ${VAR})
+    SET(${VAR} ${VAL})
+  ENDIF()
+ENDMACRO()

cmake/mysql_version.cmake

@@ -70,24 +70,27 @@ ENDMACRO()
 GET_MYSQL_VERSION()
 
 SET(MYSQL_TCP_PORT_DEFAULT 0)
-IF(NOT MYSQL_TCP_PORT)
-  SET(MYSQL_TCP_PORT 3306)
-ENDIF()
+SET_IF_UNSET(MYSQL_TCP_PORT 3306)
 
-IF(NOT COMPILATION_COMMENT)
-  SET(COMPILATION_COMMENT "Source distribution")
-ENDIF()
+SET_IF_UNSET(COMPILATION_COMMENT "Source distribution")
 
 INCLUDE(package_name)
 IF(NOT CPACK_PACKAGE_FILE_NAME)
   GET_PACKAGE_FILE_NAME(CPACK_PACKAGE_FILE_NAME)
 ENDIF()
 
-IF(NOT CPACK_SOURCE_PACKAGE_FILE_NAME)
-  SET(CPACK_SOURCE_PACKAGE_FILE_NAME "mariadb-${VERSION}")
-ENDIF()
-SET(CPACK_PACKAGE_CONTACT "MariaDB Developers <maria-developers@lists.launchpad.net>")
-SET(CPACK_PACKAGE_VENDOR "MariaDB Foundation")
+SET_IF_UNSET(CPACK_SOURCE_PACKAGE_FILE_NAME "mariadb-${VERSION}")
+SET_IF_UNSET(CPACK_PACKAGE_CONTACT "MariaDB Developers <maria-developers@lists.launchpad.net>")
+SET_IF_UNSET(CPACK_PACKAGE_VENDOR "MariaDB Foundation")
+SET_IF_UNSET(CPACK_PACKAGE_DESCRIPTION "${CPACK_PACKAGE_DESCRIPTION_SUMMARY}
+
+It is GPL v2 licensed, which means you can use the it free of charge under the
+conditions of the GNU General Public License Version 2 (http://www.gnu.org/licenses/).
+
+MariaDB documentation can be found at https://mariadb.com/kb
+MariaDB bug reports should be submitted through https://jira.mariadb.org
+
+")
 SET(CPACK_SOURCE_GENERATOR "TGZ")
 
 # Defintions for windows version resources