Bug #30995521 DISABLE KERBEROS FOR ALL PLATFORMS EXCEPT LINUX RPM AND DEB PACKAGES

Building with Kerberos headers/libraries is currently enabled for all
platforms. This was implemented by
Bug #30921806 ENABLE CUSTOM KERBEROS FOR STANDALONE LINUX BUILDS
WL#12888: Kerberos authentication in MySQL.

For MySQL 8.0.20 we want to disable this feature for all platforms,
except for Linux RPM and DEB packages.

Change-Id: I1b31cbd5085a4ff234645f0fe8777cb285cca974

Author: Tor Didriksen

cmake/install_layout.cmake

@@ -118,6 +118,10 @@ IF(LINUX AND INSTALL_LAYOUT MATCHES "RPM")
   SET(LINUX_RPM 1)
 ENDIF()
 
+IF(LINUX AND INSTALL_LAYOUT MATCHES "DEB")
+  SET(LINUX_DEB 1)
+ENDIF()
+
 IF(WIN32)
   SET(VALID_INSTALL_LAYOUTS "TARGZ" "STANDALONE")
   LIST(FIND VALID_INSTALL_LAYOUTS "${INSTALL_LAYOUT}" ind)

cmake/kerberos.cmake

@@ -34,6 +34,15 @@ STRING_APPEND(WITH_KERBEROS_DOC ", \nnone (skip kerberos)>")
 
 STRING(REPLACE "\n" "| " WITH_KERBEROS_DOC_STRING "${WITH_KERBEROS_DOC}")
 
+MACRO(RESET_KERBEROS_VARIABLES)
+  UNSET(KERBEROS_LIB_CONFIGURED CACHE)
+  UNSET(KERBEROS_LIB_CONFIGURED)
+  UNSET(KERBEROS_INCLUDE_DIR)
+  UNSET(KERBEROS_INCLUDE_DIR CACHE)
+  UNSET(KERBEROS_LIBRARIES)
+  UNSET(KERBEROS_LIBRARIES CACHE)
+ENDMACRO()
+
 FUNCTION(WARN_MISSING_SYSTEM_KERBEROS OUTPUT_WARNING)
   IF(NOT KERBEROS_FOUND AND WITH_KERBEROS STREQUAL "system")
     MESSAGE(WARNING "Cannot find KERBEROS development libraries. "
@@ -189,6 +198,13 @@ MACRO(MYSQL_CHECK_KERBEROS)
     SET(WITH_KERBEROS "none" CACHE INTERNAL "")
   ENDIF()
 
+  IF(WITH_AUTHENTICATION_LDAP AND (LINUX_RPM OR LINUX_DEB))
+    SET(WITH_KERBEROS "system" CACHE STRING "${WITH_KERBEROS_DOC_STRING}" FORCE)
+  ELSE()
+    RESET_KERBEROS_VARIABLES()
+    SET(WITH_KERBEROS "none" CACHE STRING "${WITH_KERBEROS_DOC_STRING}" FORCE)
+  ENDIF()
+
   IF(NOT WITH_KERBEROS)
     IF(WITH_AUTHENTICATION_LDAP)
       SET(WITH_KERBEROS "system" CACHE STRING "${WITH_KERBEROS_DOC_STRING}")