kou commented on a change in pull request #9367:
URL: https://github.com/apache/arrow/pull/9367#discussion_r567323181



##########
File path: cpp/cmake_modules/ThirdpartyToolchain.cmake
##########
@@ -854,13 +854,6 @@ else()
   set(THRIFT_REQUIRES_BOOST FALSE)
 endif()
 
-# Parquet requires boost only with gcc 4.8 (because of missing std::regex).
-if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION 
VERSION_LESS "4.9")
-  set(PARQUET_REQUIRES_BOOST TRUE)
-else()
-  set(PARQUET_REQUIRES_BOOST FALSE)
-endif()
-

Review comment:
       Thanks.
   I didn't notice that we need boost::regex only for this feature. I've 
removed boost::regex dependency entirely.




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