mesonbuild/meson

Generated files not regenerated when the generator changes

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#2,960 建立於 2018年1月22日

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 (12 留言) (0 反應) (0 負責人)Python (4,978 star) (1,465 fork)batch import
buggeneratorshelp wanted

描述

I have a bunch of files generated by a python script. When changing the gputop-oa-codegen.py script, files don't get regenerated. Is this expected?

oa_generator = generator(                                                          
  prog_python2,                                                                    
  arguments : ['@CURRENT_SOURCE_DIR@/../scripts/gputop-oa-codegen.py', '@INPUT@',  
               '--chipset', '@EXTRA_ARGS@', '--code', '@OUTPUT0@',                 
               '--header', '@OUTPUT1@'],                                           
  output : ['@BASENAME@.c', '@BASENAME@.h'],                                       
)                                                                                  
                                                                                   
oa_sources = []                                                                    
foreach hw : ['hsw', 'bdw', 'chv', 'sklgt2', 'sklgt3', 'sklgt4', 'bxt',            
              'kblgt2', 'kblgt3', 'glk', 'cflgt2', 'cflgt3', 'cnl']                
  _xml = '../gputop-data/oa-@0@.xml'.format(hw)                                    
  oa_sources += oa_generator.process(_xml, extra_args : hw)                        
endforeach                                                                         
                                                                                   
gputop_client_oa = static_library('gputop_client_oa', oa_sources,                              
                                  c_args : ['-Wno-unused-parameter', '-Wno-unused-function'],  
                                  dependencies : mesa_dep)

貢獻者指南

技術棧
python
領域
build system
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Knowledge of Meson build systemUnderstanding of generator() in MesonPython
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
40
研究方向
The issue is that when the generator script (gputop oa codegen.py) changes, the output files are not regenerated. In Meson, custom generators have an 'input' argument but the script itself is typically passed as an argument and not tracked as a dependency. Investigate how Meson handles dependency tracking for generator scripts in the backend code (e.g., mesonbuild/backend/backends.py). Look at GitHub comments for any proposed solutions or workarounds. The fix may involve adding the script as an implicit dependency similar to how compilers are tracked.