diff --git a/lldb/cmake/modules/LLDBConfig.cmake b/lldb/cmake/modules/LLDBConfig.cmake
index 380016ce48015..ce5e666a6f5e1 100644
--- a/lldb/cmake/modules/LLDBConfig.cmake
+++ b/lldb/cmake/modules/LLDBConfig.cmake
@@ -123,7 +123,10 @@ if(APPLE AND CMAKE_GENERATOR STREQUAL Xcode)
 endif()
 
 set(LLDB_EXPORT_ALL_SYMBOLS 0 CACHE BOOL
-  "Causes lldb to export all symbols when building liblldb.")
+  "Causes lldb to export some private symbols when building liblldb. See lldb/source/API/liblldb-private.exports for the full list of symbols that get exported.")
+
+set(LLDB_EXPORT_ALL_SYMBOLS_EXPORTS_FILE "" CACHE PATH
+  "When `LLDB_EXPORT_ALL_SYMBOLS` is enabled, this specifies the exports file to use when building liblldb.")
 
 if ((NOT MSVC) OR MSVC12)
   add_definitions( -DHAVE_ROUND )
diff --git a/lldb/source/API/CMakeLists.txt b/lldb/source/API/CMakeLists.txt
index 7cfa3aaafdae1..a574a461d4920 100644
--- a/lldb/source/API/CMakeLists.txt
+++ b/lldb/source/API/CMakeLists.txt
@@ -177,11 +177,18 @@ if (NOT CMAKE_SYSTEM_NAME MATCHES "Windows")
     # from working on some systems but limits the liblldb size.
     MESSAGE("-- Symbols (liblldb): exporting all symbols from the lldb namespace")
     add_llvm_symbol_exports(liblldb ${CMAKE_CURRENT_SOURCE_DIR}/liblldb.exports)
-  else()
-    # Don't use an explicit export.  Instead, tell the linker to
-    # export all symbols.
+  elseif (NOT LLDB_EXPORT_ALL_SYMBOLS_EXPORTS_FILE)
+    # Don't use an explicit export. Instead, tell the linker to export all symbols.
     MESSAGE("-- Symbols (liblldb): exporting all symbols from the lldb and lldb_private namespaces")
+    MESSAGE(WARNING "Private LLDB symbols frequently change and no API stability is guaranteed. "
+                    "Only the SB API is guaranteed to be stable.")
     add_llvm_symbol_exports(liblldb ${CMAKE_CURRENT_SOURCE_DIR}/liblldb-private.exports)
+  else ()
+    MESSAGE("-- Symbols (liblldb): exporting all symbols specified in the exports "
+            " file '${LLDB_EXPORT_ALL_SYMBOLS_EXPORTS_FILE}'")
+    MESSAGE(WARNING "Private LLDB symbols frequently change and no API stability is guaranteed. "
+                    "Only the SB API is guaranteed to be stable.")
+    add_llvm_symbol_exports(liblldb "${LLDB_EXPORT_ALL_SYMBOLS_EXPORTS_FILE}")
   endif()
   set_target_properties(liblldb_exports PROPERTIES FOLDER "lldb misc")
 elseif (LLDB_EXPORT_ALL_SYMBOLS)