cmake .git warning

only run git if .git exists, don't do it for source tarballs

CMakeLists.txt

@@ -439,7 +439,7 @@ CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/include/mysql_version.h.in
 CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/sql/sql_builtin.cc.in
     ${CMAKE_BINARY_DIR}/sql/sql_builtin.cc)
 
-IF(GIT_EXECUTABLE)
+IF(GIT_EXECUTABLE AND EXISTS ${PROJECT_SOURCE_DIR}/.git)
   EXECUTE_PROCESS(
     COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
       WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}

libmariadb @ 463211f4

-Subproject commit ed5921ed4f26407ff1ff0596f2c74c8d7098632d
+Subproject commit 463211f4a9e68eb7a2fd7a8a3466e5bf3a13e361

storage/rocksdb/CMakeLists.txt

@@ -241,7 +241,7 @@ IF (ZSTD_FOUND)
   SET(WITH_ZSTD ON)
 ENDIF()
 
-IF(GIT_EXECUTABLE)
+IF(GIT_EXECUTABLE AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/rocksdb/.git)
   EXECUTE_PROCESS(
     COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
       WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/rocksdb