mdbx-cmake: синхронизация утилит между проектами.

cmake/utils.cmake

@@ -12,6 +12,21 @@ endif()
 cmake_policy(PUSH)
 cmake_policy(VERSION ${CMAKE_MINIMUM_REQUIRED_VERSION})
 
+macro(add_option HIVE NAME DESCRIPTION DEFAULT)
+  list(APPEND ${HIVE}_BUILD_OPTIONS ${HIVE}_${NAME})
+  if(NOT ${DEFAULT} STREQUAL "AUTO")
+    option(${HIVE}_${NAME} "${DESCRIPTION}" ${DEFAULT})
+  elseif(NOT DEFINED ${HIVE}_${NAME})
+    set(${HIVE}_${NAME}_AUTO ON)
+  endif()
+endmacro()
+
+macro(set_if_undefined VARNAME)
+  if(NOT DEFINED "${VARNAME}")
+    set("${VARNAME}" ${ARGN})
+  endif()
+endmacro()
+
 macro(add_compile_flags languages)
   foreach(_lang ${languages})
     string(REPLACE ";" " " _flags "${ARGN}")