Remove ability to synchronize

CHANGELOG.md

@@ -10,7 +10,7 @@
 * Filtering notifications with backlink columns as last element could sometimes give wrong results ([#7530](https://github.com/realm/realm-core/issues/7530), since 11.1.0)
 
 ### Breaking changes
-* None.
+* Ability to synchronize has been removed.
 
 ### Compatibility
 * Fileformat: Generates files with format v24. Reads and automatically upgrade from fileformat v10. If you want to upgrade from an earlier file format version you will have to use RealmCore v13.x.y or earlier.

CMakeLists.txt

@@ -259,7 +259,6 @@ if(UNIX)
 endif()
 
 # Options (passed to CMake)
-option(REALM_ENABLE_SYNC "Enable synchronized realms." ON)
 option(REALM_BUILD_TEST_CLIENT "Build the test client" OFF)
 option(REALM_ENABLE_ASSERTIONS "Enable assertions in release mode." OFF)
 option(REALM_ENABLE_ALLOC_SET_ZERO "Zero all allocations." OFF)
@@ -268,7 +267,6 @@ if(NOT EMSCRIPTEN)
 endif()
 option(REALM_ENABLE_MEMDEBUG "Add additional memory checks" OFF)
 option(REALM_VALGRIND "Tell the test suite we are running with valgrind" OFF)
-option(REALM_SYNC_MULTIPLEXING "Enables/disables sync session multiplexing by default" ON)
 set(REALM_MAX_BPNODE_SIZE "1000" CACHE STRING "Max B+ tree node size.")
 option(REALM_ENABLE_GEOSPATIAL "Enable geospatial types and queries." ON)
 option(REALM_APP_SERVICES "Enable the default app services implementation." ON)
@@ -287,15 +285,7 @@ endif()
 find_package(Backtrace)
 set(REALM_HAVE_BACKTRACE ${Backtrace_FOUND})
 
-if(REALM_ENABLE_SYNC)
-    option(REALM_FORCE_OPENSSL "Always use OpenSSL for SSL needs, regardless of target platform." OFF)
-    if(CMAKE_SYSTEM_NAME MATCHES "^Windows|Linux|Android")
-        set(REALM_NEEDS_OPENSSL TRUE)
-    endif()
-    if(REALM_NEEDS_OPENSSL OR REALM_FORCE_OPENSSL)
-        option(REALM_INCLUDE_CERTS "Include a list of trust certificates in the build for OpenSSL certificate verification" ON)
-    endif()
-elseif(REALM_ENABLE_ENCRYPTION AND CMAKE_SYSTEM_NAME MATCHES "Linux|Android")
+if(REALM_ENABLE_ENCRYPTION AND CMAKE_SYSTEM_NAME MATCHES "Linux|Android")
     set(REALM_NEEDS_OPENSSL TRUE)
 endif()
 
@@ -380,9 +370,6 @@ set(REALM_EXPORTED_TARGETS
         RealmFFI
         RealmFFIStatic
         )
-if(REALM_ENABLE_SYNC)
-    list(APPEND REALM_EXPORTED_TARGETS Sync)
-endif()
 export(TARGETS ${REALM_EXPORTED_TARGETS} NAMESPACE Realm:: FILE RealmTargets.cmake)
 configure_file(tools/cmake/RealmConfig.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/RealmConfig.cmake @ONLY)
 configure_file(tools/cmake/AcquireRealmDependency.cmake ${CMAKE_CURRENT_BINARY_DIR}/AcquireRealmDependency.cmake @ONLY)

Package.swift

@@ -15,7 +15,6 @@ var cxxSettings: [CXXSetting] = [
     .define("REALM_INSTALL_LIBEXECDIR", to: ""),
     .define("REALM_ENABLE_ASSERTIONS", to: "1"),
     .define("REALM_ENABLE_ENCRYPTION", to: "1"),
-    .define("REALM_ENABLE_SYNC", to: "1"),
     .define("REALM_ENABLE_GEOSPATIAL", to: "1"),
     .define("REALM_APP_SERVICES", to: "1"),