amosbird opened a new pull request, #52835:
URL: https://github.com/apache/doris/pull/52835

   This PR adds support to compile Doris backend with GCC 15 and Clang 20.
   
   I'm unable to address build errors in CLucene. I'll leave the fix to the 
community.
   
   ```
   modified   src/ext/for/CMakeLists.txt
   @@ -9,7 +9,7 @@ if(NOT CMAKE_BUILD_TYPE)
    endif()
    
    set(DEBUG "-DNDEBUG -g -O3")
   -set(OPT "-w -Wall -fstrict-aliasing -falign-loops -Wno-int-conversion")
   +set(OPT "-w -Wall -fstrict-aliasing -falign-loops -Wno-int-conversion 
-Wno-incompatible-pointer-types")
    
    if(CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64")
        set(SSE "-msse4.2")
   ```
   
   BTW, TurboPFor is licensed under GPLv2-only, which makes it incompatible 
with the Apache License and therefore prohibited for inclusion in Apache 
Doris/Clucene, as per [ASF 
policy](https://www.apache.org/legal/resolved.html#prohibited).
   
   While the library employs some interesting integer encoding techniques, its 
feature set is broader than necessary for our use case, and the code style is 
unconventional. Reimplementing the subset we need in modern C++ should be 
straightforward.
   
   ### Check List (For Author)
   
   - Test <!-- At least one of them must be included. -->
       - [ ] Regression test
       - [ ] Unit Test
       - [ ] Manual test (add detailed scripts or steps below)
       - [x] No need to test or manual test. Explain why:
           - [x] This is a refactor/code format and no logic has been changed.
           - [ ] Previous test can cover this change.
           - [ ] No code files have been changed.
           - [ ] Other reason <!-- Add your reason?  -->
   
   - Behavior changed:
       - [x] No.
       - [ ] Yes. <!-- Explain the behavior change -->
   
   - Does this need documentation?
       - [x] No.
       - [ ] Yes. <!-- Add document PR link here. eg: 
https://github.com/apache/doris-website/pull/1214 -->
   
   ### Check List (For Reviewer who merge this PR)
   
   - [ ] Confirm the release note
   - [ ] Confirm test cases
   - [ ] Confirm document
   - [ ] Add branch pick label <!-- Add branch pick label that this PR should 
merge into -->
   
   


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